Last week, China's domestic epichlorohydrin market first rose and then fell. As of Monday, the reference price of the market in East China and Huangshan is 11000-11300 yuan / ton (consignment delivery), and the reference price in Shandong and North China is 11200 yuan / ton. (Accepted to send) around, the price fell by 800 yuan / ton from the previous week. buy dimethyl carbonate with the best price
At the beginning of the week, the purchase of Huangshan market was concentrated in the market to replenish the goods. The actual single-handed talks were heavy, and the manufacturers' offers increased. The sales mentality was strong, and the market was more enthusiastic. The price of the Huangshan market was once raised to 13800-14000 yuan/ Ton. However, the good times are not long. Since Wednesday, with the low-cost replenishment of the downstream, the rhythm of the replenishment has slowed down. In addition, the sewage discharge limit of Huangshan County is limited. The operating rate of solid epoxy resin is limited, and it is only maintained at 50%. Left and right, causing the buying atmosphere to cool down, the new single shipment pressure of epichlorohydrin is gradually increasing, the rising market is difficult to sustain, the price quickly enters the downward channel, and some manufacturers have heard lower orders due to inventory and product quality. The downstream epoxy resin factory is cautious and wait-and-see. As the current order materials have been purchased, the price of epichlorohydrin has risen and fallen, which has little impact on downstream operators, and some operators have a bearish sentiment towards the market. Ascension, it is really bleak.
Thursday, September 5, 2019
China's Epoxy Resin Market Declines Overall
Last week, China's domestic epoxy resin market showed a downward trend. As of this Monday, Huadong liquid epoxy resin negotiated price reference at 17200-17600 yuan / ton (contracted delivery), solid epoxy resin negotiated price at 14600-15200 yuan / ton (accepted delivery). buy Propylene oxide with the best price
During the week, the raw material epichlorohydrin was up and down significantly, and the other raw material bisphenol A continued to be weak. The epoxy resin production cost support was weakened, but the downstream order of Huangshan solid resin market was better, the manufacturers offered high prices, and the new single-letter profit margin decreased. The liquid epoxy resin factory consumes long-term raw material orders, and the increase is relatively small, and the overall profit margin increases.
During the week, the liquid resin plant started operating at a stable load, maintaining at around 60%, Guodu Chemical's 145,000 tons/year plant start-up load is relatively low; Changchun Chemical 150,000 tons/year plant, Jiangsu Yangnong 140,000 tons/year device in September There are maintenance plans. However, due to the limited discharge of wastewater from the Jixian Industrial Park, the solid epoxy resin has a limited start-up load and is only maintained at around 50%. Raw materials for downstream and terminal orders have been purchased in place, and the buying performance has been negative and wait-and-see. The new orders have been unsatisfactory, and the purchases are just in need of purchase. The number of transactions is limited, and the industry pays more attention to the fluctuations in the later market.
During the week, the raw material epichlorohydrin was up and down significantly, and the other raw material bisphenol A continued to be weak. The epoxy resin production cost support was weakened, but the downstream order of Huangshan solid resin market was better, the manufacturers offered high prices, and the new single-letter profit margin decreased. The liquid epoxy resin factory consumes long-term raw material orders, and the increase is relatively small, and the overall profit margin increases.
During the week, the liquid resin plant started operating at a stable load, maintaining at around 60%, Guodu Chemical's 145,000 tons/year plant start-up load is relatively low; Changchun Chemical 150,000 tons/year plant, Jiangsu Yangnong 140,000 tons/year device in September There are maintenance plans. However, due to the limited discharge of wastewater from the Jixian Industrial Park, the solid epoxy resin has a limited start-up load and is only maintained at around 50%. Raw materials for downstream and terminal orders have been purchased in place, and the buying performance has been negative and wait-and-see. The new orders have been unsatisfactory, and the purchases are just in need of purchase. The number of transactions is limited, and the industry pays more attention to the fluctuations in the later market.
Environmentally Friendly Coatings Represent a Steady Growth in China's Powder Coatings Production
With the development of industry, the problem of environmental pollution has gradually emerged. The long-term smog weather reflects the severity of China's air pollution from one side. The Chinese government attaches great importance to this. In order to effectively control PM2.5, the former Ministry of Environmental Protection has formulated the "Air Pollution Prevention Action Plan" and the "National Ten Articles". The Ministry of Ecology and Environment has also signed the “Responsibility Letter for Air Pollution Prevention and Control Targets” with 31 provinces (autonomous regions and municipalities) to further implement local government environmental protection responsibilities. Article 46 of the Law on the Prevention and Control of Atmospheric Pollution clearly stipulates that industrial coating enterprises should use coatings with low volatile organic content. For industries such as furniture production, home decoration, automobile manufacturing, automobile repair, and home appliance manufacturing, the government strictly requires the use of environmentally friendly coatings. propylene glycol in coating
Therefore, as a representative of environmentally friendly coatings, China's powder coatings have performed well in recent years. The growth rate of China's powder coatings production is basically consistent with the growth rate of national GDP. According to the company's data, there were 3,274 companies engaged in powder coatings related business in China in 2018. In 2011-2017, China's powder coating production increased steadily. In 2017, China's powder coating production reached 1.66 million tons, an increase of 7.10%. According to forward-looking calculations, the output of China's powder coatings in 2018 is about 1.76 million tons.
Therefore, as a representative of environmentally friendly coatings, China's powder coatings have performed well in recent years. The growth rate of China's powder coatings production is basically consistent with the growth rate of national GDP. According to the company's data, there were 3,274 companies engaged in powder coatings related business in China in 2018. In 2011-2017, China's powder coating production increased steadily. In 2017, China's powder coating production reached 1.66 million tons, an increase of 7.10%. According to forward-looking calculations, the output of China's powder coatings in 2018 is about 1.76 million tons.
Monday, September 2, 2019
China's Domestic Polyacrylamide Price Fluctuated Slightly in The Middle and Late August
On August 19th, the mainstream price of polyacrylamide (cation) market was about 16,400 yuan / ton, and the mainstream price of the market on the 30th was 16,366.67 yuan / ton, which was flat after a small shock. At present, the mainstream quotation range of polyacrylamide domestic market: cation (PAM, molecular weight 12 million) quoted 16200-18100 yuan / ton, anion (PAM, molecular weight 12 million) quoted 10000-12100 yuan / ton. propylene glycol carbonate
Industry chain: It is understood that the mainstream price of upstream acrylonitrile is 12,000 yuan/ton, and the market is stable. The downstream demand for polyacrylamide is stable, manufacturers give priority to old customers, and there are certain changes in prices, but the overall range is not large, and the market development of new customers is postponed or suspended.
Industry: 1. Notice of suspension of production: On July 26, the water purification and environmental protection enterprise of Yongan Road Sub-district Office of Gongyi City, Henan Province received the Notice of Suspension of Production, and notified: According to the analysis of the city's environmental pollution and future pollution weather, the city The tackling office requires all in-depth management enterprises to stop production and control before they are unaccepted, and can resume production after dispatching or accepting according to the attack. 2. After the resumption of production, the production was stopped again: 10 days of resumption of production in August, and production stopped again on the 15th. According to the manufacturer, the suspension of production was more affected by the National Games held in Zhengzhou on September 8. The local environmental inspection was strict. All local enterprises were required to stop production for environmental protection and maintenance.
Market outlook: As the main production area of Henan Gongyi City, the relevant manufacturers, in the middle and late this month, once again suspended production, manufacturers holiday, inventory to maintain the needs of old customers, the current supply inventory is relatively sufficient, the price impact is not great, but for the new The customer's offer is partially raised. On September 8th, it was close at hand. After the factory resumed production, the supply situation was alleviated. According to the current inventory supply, the price change is not expected to be too large during this period.
Industry chain: It is understood that the mainstream price of upstream acrylonitrile is 12,000 yuan/ton, and the market is stable. The downstream demand for polyacrylamide is stable, manufacturers give priority to old customers, and there are certain changes in prices, but the overall range is not large, and the market development of new customers is postponed or suspended.
Industry: 1. Notice of suspension of production: On July 26, the water purification and environmental protection enterprise of Yongan Road Sub-district Office of Gongyi City, Henan Province received the Notice of Suspension of Production, and notified: According to the analysis of the city's environmental pollution and future pollution weather, the city The tackling office requires all in-depth management enterprises to stop production and control before they are unaccepted, and can resume production after dispatching or accepting according to the attack. 2. After the resumption of production, the production was stopped again: 10 days of resumption of production in August, and production stopped again on the 15th. According to the manufacturer, the suspension of production was more affected by the National Games held in Zhengzhou on September 8. The local environmental inspection was strict. All local enterprises were required to stop production for environmental protection and maintenance.
Market outlook: As the main production area of Henan Gongyi City, the relevant manufacturers, in the middle and late this month, once again suspended production, manufacturers holiday, inventory to maintain the needs of old customers, the current supply inventory is relatively sufficient, the price impact is not great, but for the new The customer's offer is partially raised. On September 8th, it was close at hand. After the factory resumed production, the supply situation was alleviated. According to the current inventory supply, the price change is not expected to be too large during this period.
China's Phthalic Anhydride Market Price Trend Rose on September 2
The phthalic anhydride commodity index was 59.85 on September 2, up 2.1 points from yesterday, down 50.18% from the highest point of the cycle at 120.13 points (2012-02-28), up 23.61 from the lowest point of 48.42 on January 21, 2016. %. (Note: The period refers to 2011-09-01 to date).
Recently, the domestic phthalic anhydride market price trend has risen. The market price of phthalic anhydride phthalic anhydride in East China has risen. The downstream factories have just kept purchasing. The factory inventory is still under pressure. The high-end transactions are blocked, but the orders on the market have increased compared with the previous ones. The market price of phthalic anhydride has risen. The mainstream of neighboring sources in East China is about 6000-6200 yuan. Epoxy Propane
/ ton, naphthalene supply sources talk about the mainstream in 5600-5700 yuan / ton; North China phthalic anhydride market mainstream offer at 6000-6100 yuan / ton, the market price continues to rise, some manufacturers raise the ex-factory price, downstream construction is not high, on-demand procurement for The main, wait-and-see attitude is strong, the domestic phthalic anhydride plant runs stably, the field phthalic anhydride spot
The supply was normal and the price of phthalic anhydride rose.
Recently, the domestic phthalic anhydride upstream product price of benzene Sinopec is 6,300 yuan / ton, the import of benzene in the port area has not changed much, the quotation is stable, the recent port benzene market is generally, the port inventory is at a low level, the quotation of the benzene external disk is stable, and the actual transaction price is Negotiation shall prevail, the actual order will be discussed in detail, and the upstream price will fluctuate.
The market price of phthalic anhydride has risen. The price of downstream DOP fluctuated and the price of isooctyl alcohol increased, and the cost of DOP increased. The price of DOP is higher, the downstream demand of DOP is fluctuating, the enthusiasm of customers is generally low, and the downstream PVC market is slightly lower. The mainstream transaction price of DOP market is about 7,350 yuan/ton, and the downstream price has risen.
The market price of phthalic anhydride in the later period may remain firm.
Recently, the domestic phthalic anhydride market price trend has risen. The market price of phthalic anhydride phthalic anhydride in East China has risen. The downstream factories have just kept purchasing. The factory inventory is still under pressure. The high-end transactions are blocked, but the orders on the market have increased compared with the previous ones. The market price of phthalic anhydride has risen. The mainstream of neighboring sources in East China is about 6000-6200 yuan. Epoxy Propane
/ ton, naphthalene supply sources talk about the mainstream in 5600-5700 yuan / ton; North China phthalic anhydride market mainstream offer at 6000-6100 yuan / ton, the market price continues to rise, some manufacturers raise the ex-factory price, downstream construction is not high, on-demand procurement for The main, wait-and-see attitude is strong, the domestic phthalic anhydride plant runs stably, the field phthalic anhydride spot
The supply was normal and the price of phthalic anhydride rose.
Recently, the domestic phthalic anhydride upstream product price of benzene Sinopec is 6,300 yuan / ton, the import of benzene in the port area has not changed much, the quotation is stable, the recent port benzene market is generally, the port inventory is at a low level, the quotation of the benzene external disk is stable, and the actual transaction price is Negotiation shall prevail, the actual order will be discussed in detail, and the upstream price will fluctuate.
The market price of phthalic anhydride has risen. The price of downstream DOP fluctuated and the price of isooctyl alcohol increased, and the cost of DOP increased. The price of DOP is higher, the downstream demand of DOP is fluctuating, the enthusiasm of customers is generally low, and the downstream PVC market is slightly lower. The mainstream transaction price of DOP market is about 7,350 yuan/ton, and the downstream price has risen.
The market price of phthalic anhydride in the later period may remain firm.
Low Demand Season August Propane China Market Narrow Adjustment
First, the price trend
In August, the propane market was narrowly adjusted. At the beginning of the month, the average price of propane market was 3,615 yuan / ton, and the average price at the end of the month was 3692.5 yuan / ton. The monthly increase was 2.14%, and the price fell 31.06% compared with the same period of last year. Propylene Glycol
Second, the analysis of influencing factors
Products: Propane prices fluctuated mainly this month, and the market trading atmosphere was average. As of August 30, Shandong Dongming Petrochemical propane was stopped for use, and no quotation is available. The ex-factory price of propane in the supply and marketing company of Tianjin Bohai Chemical Group is 3,600 yuan/ton, the ex-factory price of propane in Shandong Haiyou Petrochemical Group is 3,700 yuan/ton, and the ex-factory price of propane in Shandong Huifeng Petrochemical is 3,750 yuan/ton. Propane of Shandong Hengyuan Petrochemical Co., Ltd. The ex-factory price is 3720 yuan / ton, Shandong Binzhou Dayou Group propane ex-factory price is 3700 yuan / ton, Shandong Zhonghai Fine Chemical Co., Ltd. propane ex-factory price is 3700 yuan / ton, Shandong Yuhuang Shengshi propane ex-factory price is 3630 yuan / ton, The ex-factory price of Sinopec Qingdao refinery and chemical propane is 3,400.
Industry chain: In August, the liquefied gas (Shandong market) was narrowly adjusted in a narrow range. The international crude oil price this month still has a large impact on the liquefied gas market. At the beginning of August, the price of liquefied petroleum gas continued to be low, and the downstream market was aggressively entering the market. The factory shipments were smoother and the stocks were not pressured, and then pushed up. However, due to the decline in international crude oil, the increase was not large. In mid-August, the typhoon affected the production and transportation of the manufacturers. The shipments were blocked for several days and the prices fell. Subsequently, the weather affected gradually weakened, the factory shipments returned to normal, the inventory was eased, and the international crude oil pushed up the market to drive the market higher. However, the shipment has been briefly improved. Although the traditional sales season is coming, the demand increase is limited. In addition, the CP is expected to fall in September, and the downstream market is bearish and the market enthusiasm is weak. Factory shipments returned to a dull level, and prices fell again at the end of August. Until the introduction of CP in September, although propane fell but the magnitude was less than expected, the market mentality eased and the price rose slightly.
In August, the price of propylene market fluctuated and the fluctuations were still frequent. In total, there were three peaks and troughs. The polypropylene powder, butanol and propylene oxide were all profitable, and the customers' purchases were positive. In August, the domestic acrylic market stepped up, reaching 3.04%, which was good for the propylene market; the epichlorohydrin began to oscillate. Downside, the monthly decline was 23.28%, and the monthly amplitude was as high as 28.63%. The recent market is dominated by consolidation, or there is a certain negative impact on the price of propylene.
In August, the overall propane market rose slightly, mostly due to shocks. At the beginning of the month, the price of CP was released in August, and the propane dropped slightly, which brought bad news to the market. In addition, the international crude oil fell sharply on August 2, affecting the market mentality. The downstream market was not enthusiastic, and the manufacturers were not well-sold. The propane price shift shifted downwards. However, in mid-August, with the continuous rise of international crude oil, the propane market was boosted, the downstream market entered the market with enthusiasm, the manufacturers shipped smoothly, the stocks were pressureless, and they actively pushed up, and the prices stopped falling and rebounded. However, August is still a low season for traditional demand. The contradiction between supply and demand is prominent. In addition, the CP is expected to fall in September, and the price is blocked. Until the end of August, the price of CP was released in September. Although propane decreased compared with last month, the decline was less than expected, the market mentality was supported, and the price rose slightly.
Saudi Aramco announced in September that the price of propane was lowered and the price of butane was flat. Propane was $350/ton, down $20/ton from last month; butane was $360/ton, unchanged from last month. The cost of long-term propane conversion to the shore is about 3022 yuan / ton, butane is about 3100 yuan / ton.
Industry: According to the price monitoring of business companies, there were 37 kinds of commodities in the chemical sector rising in the price of commodity prices in August 2019, among which 15 kinds of products increased by more than 5%, accounting for 17.9% of the monitored products in the sector. The top 3 commodities were hydrogen peroxide (39.93%), acetic acid (20.90%) and butadiene (14.47%). There were 39 kinds of commodities with a decrease in the chain ratio, 13 products with a drop of more than 5%, accounting for 15.5% of the monitored products in the sector; the top 3 products were yellow phosphorus (-27.58%) and epichlorohydrin ( -23.28%), sulfur (-19.38%). This month's average price increase and decrease was 0.03%.
Third, the market outlook
Propane analysts of the business community believe that although the atmosphere is not good in August, as the weather gets colder, the demand will increase in September compared with August. With the expectation of the traditional sales season “Golden September and Silver 10”, it is expected to reverse in September. The situation, the price is gradually rising.
In August, the propane market was narrowly adjusted. At the beginning of the month, the average price of propane market was 3,615 yuan / ton, and the average price at the end of the month was 3692.5 yuan / ton. The monthly increase was 2.14%, and the price fell 31.06% compared with the same period of last year. Propylene Glycol
Second, the analysis of influencing factors
Products: Propane prices fluctuated mainly this month, and the market trading atmosphere was average. As of August 30, Shandong Dongming Petrochemical propane was stopped for use, and no quotation is available. The ex-factory price of propane in the supply and marketing company of Tianjin Bohai Chemical Group is 3,600 yuan/ton, the ex-factory price of propane in Shandong Haiyou Petrochemical Group is 3,700 yuan/ton, and the ex-factory price of propane in Shandong Huifeng Petrochemical is 3,750 yuan/ton. Propane of Shandong Hengyuan Petrochemical Co., Ltd. The ex-factory price is 3720 yuan / ton, Shandong Binzhou Dayou Group propane ex-factory price is 3700 yuan / ton, Shandong Zhonghai Fine Chemical Co., Ltd. propane ex-factory price is 3700 yuan / ton, Shandong Yuhuang Shengshi propane ex-factory price is 3630 yuan / ton, The ex-factory price of Sinopec Qingdao refinery and chemical propane is 3,400.
Industry chain: In August, the liquefied gas (Shandong market) was narrowly adjusted in a narrow range. The international crude oil price this month still has a large impact on the liquefied gas market. At the beginning of August, the price of liquefied petroleum gas continued to be low, and the downstream market was aggressively entering the market. The factory shipments were smoother and the stocks were not pressured, and then pushed up. However, due to the decline in international crude oil, the increase was not large. In mid-August, the typhoon affected the production and transportation of the manufacturers. The shipments were blocked for several days and the prices fell. Subsequently, the weather affected gradually weakened, the factory shipments returned to normal, the inventory was eased, and the international crude oil pushed up the market to drive the market higher. However, the shipment has been briefly improved. Although the traditional sales season is coming, the demand increase is limited. In addition, the CP is expected to fall in September, and the downstream market is bearish and the market enthusiasm is weak. Factory shipments returned to a dull level, and prices fell again at the end of August. Until the introduction of CP in September, although propane fell but the magnitude was less than expected, the market mentality eased and the price rose slightly.
In August, the price of propylene market fluctuated and the fluctuations were still frequent. In total, there were three peaks and troughs. The polypropylene powder, butanol and propylene oxide were all profitable, and the customers' purchases were positive. In August, the domestic acrylic market stepped up, reaching 3.04%, which was good for the propylene market; the epichlorohydrin began to oscillate. Downside, the monthly decline was 23.28%, and the monthly amplitude was as high as 28.63%. The recent market is dominated by consolidation, or there is a certain negative impact on the price of propylene.
In August, the overall propane market rose slightly, mostly due to shocks. At the beginning of the month, the price of CP was released in August, and the propane dropped slightly, which brought bad news to the market. In addition, the international crude oil fell sharply on August 2, affecting the market mentality. The downstream market was not enthusiastic, and the manufacturers were not well-sold. The propane price shift shifted downwards. However, in mid-August, with the continuous rise of international crude oil, the propane market was boosted, the downstream market entered the market with enthusiasm, the manufacturers shipped smoothly, the stocks were pressureless, and they actively pushed up, and the prices stopped falling and rebounded. However, August is still a low season for traditional demand. The contradiction between supply and demand is prominent. In addition, the CP is expected to fall in September, and the price is blocked. Until the end of August, the price of CP was released in September. Although propane decreased compared with last month, the decline was less than expected, the market mentality was supported, and the price rose slightly.
Saudi Aramco announced in September that the price of propane was lowered and the price of butane was flat. Propane was $350/ton, down $20/ton from last month; butane was $360/ton, unchanged from last month. The cost of long-term propane conversion to the shore is about 3022 yuan / ton, butane is about 3100 yuan / ton.
Industry: According to the price monitoring of business companies, there were 37 kinds of commodities in the chemical sector rising in the price of commodity prices in August 2019, among which 15 kinds of products increased by more than 5%, accounting for 17.9% of the monitored products in the sector. The top 3 commodities were hydrogen peroxide (39.93%), acetic acid (20.90%) and butadiene (14.47%). There were 39 kinds of commodities with a decrease in the chain ratio, 13 products with a drop of more than 5%, accounting for 15.5% of the monitored products in the sector; the top 3 products were yellow phosphorus (-27.58%) and epichlorohydrin ( -23.28%), sulfur (-19.38%). This month's average price increase and decrease was 0.03%.
Third, the market outlook
Propane analysts of the business community believe that although the atmosphere is not good in August, as the weather gets colder, the demand will increase in September compared with August. With the expectation of the traditional sales season “Golden September and Silver 10”, it is expected to reverse in September. The situation, the price is gradually rising.
Thursday, August 29, 2019
For the First Time in 2019, the Number of DOP Exports Exceeded Imports
In July, the import volume of DOP was 1,643.11 tons, a decrease of 43.54% compared with the same period of last year. The cumulative import volume from January to July was 57,709 tons, down 10.13% year-on-year; the export volume in July was 2,915.98 tons, up 48% year-on-year, from January to July. The export volume was 8662.9 tons, an increase of 303% year-on-year. buy PG from Evergreen
In July, the domestic price of DOP was low. The average monthly price in Jiangsu was 7462 yuan/ton. The lowest price appeared at the end of the month, at 7100 yuan/ton, while the average import price in July was 7640 yuan/ton. Domestic prices showed a downward trend. Merchants have limited intention to buy imported goods. In addition, the Taiwan factory also has low sales intentions to the mainland. Therefore, only 1,500 tons of contract supply was supplied in July, which led to a significant drop in imports. From the current arrivals and transactions, domestic Imports in August were about 2,600 tons, still at a relatively low level, and still mainly based on contract sources.
In 2019, the number of DOP exports increased significantly. The export volume in July was 2,915.98 tons, an increase of 1532% from the previous month. It can also be seen in Figure 2 that the overall increase is more significant. In addition, as can be seen from Figure 3, the first export volume in the market is greater than the import volume. In the case, the export volume is 1273 tons more than the import volume. China's domestic price is low. From January to July, the average price in Jiangsu is 7,920 yuan/ton. In the same period of 2018, the average price was 8,704 yuan/ton, down 9.01% year-on-year. Low is also an important factor in the increase in DOP exports.
In 2019, the number of exporting countries reached more than 42 countries. Figure 4 shows the situation of some exporting countries. It can be seen that Indonesia, North Korea and Vietnam are the top three exporting countries, accounting for 26%, 8% and 7% respectively.
The overall domestic trade situation is grim, and the regional and enterprise competition is under great pressure. Actively developing the export market is also one of the ways to relieve stress.
In July, the domestic price of DOP was low. The average monthly price in Jiangsu was 7462 yuan/ton. The lowest price appeared at the end of the month, at 7100 yuan/ton, while the average import price in July was 7640 yuan/ton. Domestic prices showed a downward trend. Merchants have limited intention to buy imported goods. In addition, the Taiwan factory also has low sales intentions to the mainland. Therefore, only 1,500 tons of contract supply was supplied in July, which led to a significant drop in imports. From the current arrivals and transactions, domestic Imports in August were about 2,600 tons, still at a relatively low level, and still mainly based on contract sources.
In 2019, the number of DOP exports increased significantly. The export volume in July was 2,915.98 tons, an increase of 1532% from the previous month. It can also be seen in Figure 2 that the overall increase is more significant. In addition, as can be seen from Figure 3, the first export volume in the market is greater than the import volume. In the case, the export volume is 1273 tons more than the import volume. China's domestic price is low. From January to July, the average price in Jiangsu is 7,920 yuan/ton. In the same period of 2018, the average price was 8,704 yuan/ton, down 9.01% year-on-year. Low is also an important factor in the increase in DOP exports.
In 2019, the number of exporting countries reached more than 42 countries. Figure 4 shows the situation of some exporting countries. It can be seen that Indonesia, North Korea and Vietnam are the top three exporting countries, accounting for 26%, 8% and 7% respectively.
The overall domestic trade situation is grim, and the regional and enterprise competition is under great pressure. Actively developing the export market is also one of the ways to relieve stress.
Supply and Demand Pattern, PTA Upcoming Winter
Recently, the PTA market has fluctuated within the range of 5100-5150 yuan. The contradiction between supply and demand in the market is not prominent, and there is no news of speculation. Fundamentally, the PTA device is at a high load and suppresses the PTA price. The downstream polyester load has risen slightly, and production and sales have improved under the promotion. Just need to be positive. The contradiction between supply and demand is still not prominent, and the maintenance of PTA equipment in the market has become the key. buy DMC from Evergreen
From the August PTA supply and demand balance sheet calculation, PTA presents a small pattern of de-stocking. On the one hand: the PTA large-scale equipment maintenance plan failed to arrive as expected. In contrast, the short-term stoppage of small-sized installations increased, and the load of Fuhaichuang equipment decreased, resulting in lower-than-expected overall supply in August. On the other hand, the load on the polyester plant rose from 84.05% at the beginning of the month to a high level of 89.37%. At the same time, a new installation of 900,000 tons (300,000 tons in a production line of Hengbang and 300,000 tons in Hengyi 2 production lines) was put into operation. Just need to maintain stability.
Unsupervised equipment, accounting for 24.66% of total capacity
According to the current PTA maintenance plan, the maintenance of the equipment in the market is not yet clear. In contrast, the news of 2.2 million tons of Xinfengming and 2.5 million tons of Hengli Petrochemical has been put into production. Based on the inspection time of the same period last year, it can be seen from Table 2 that the unsupervised production capacity is as high as 12.4 million tons, and most of them are concentrated in October, accounting for 24.66% of the total production capacity. If Xinfengming and Hengli Petrochemical can be put into production as scheduled, the impact of PTA plant overhaul on the market will be limited. If the new equipment is put into production and the equipment maintenance is on schedule, the PTA market may rebound.
There are still 2.48 million tons of new production prospects on the polyester side.
In terms of polyester, the current load is constantly increasing, and the factory's finished product inventory pressure is not large, and the overall profit is still acceptable. Enterprises such as Yisheng, Tongkun and Xinfengming have new capacity plans, and the new production is expected to be 2.48 million tons. According to the market situation, the probability of new production of polyester plants is large, and some devices may be delayed. Therefore, the demand for PTA in the market is limited.
On the whole, the demand for PTA remains stable, and if there is no major change in the device, it is just needed. The high probability of PTA new equipment being put into production is steadily advancing, and there is no problem before and after the time, but there are variables in the maintenance of old equipment. Assuming that the new PTA device is put into production as scheduled, and the historical installation is in normal condition, the PTA will only be slightly accumulated in the next September-November. At present, the PTA processing fee is around 950 yuan / ton, which is also considerable for the factory.
It is expected that the new equipment will be put into production in the long-term view of the hollow state. In the absence of large funds, the market price will not improve. Generally speaking, the current contradiction between supply and demand in the market is not prominent, and there is a lack of speculation. The market must get rid of the disadvantages and still need the cooperation of time, location and people.
From the August PTA supply and demand balance sheet calculation, PTA presents a small pattern of de-stocking. On the one hand: the PTA large-scale equipment maintenance plan failed to arrive as expected. In contrast, the short-term stoppage of small-sized installations increased, and the load of Fuhaichuang equipment decreased, resulting in lower-than-expected overall supply in August. On the other hand, the load on the polyester plant rose from 84.05% at the beginning of the month to a high level of 89.37%. At the same time, a new installation of 900,000 tons (300,000 tons in a production line of Hengbang and 300,000 tons in Hengyi 2 production lines) was put into operation. Just need to maintain stability.
Unsupervised equipment, accounting for 24.66% of total capacity
According to the current PTA maintenance plan, the maintenance of the equipment in the market is not yet clear. In contrast, the news of 2.2 million tons of Xinfengming and 2.5 million tons of Hengli Petrochemical has been put into production. Based on the inspection time of the same period last year, it can be seen from Table 2 that the unsupervised production capacity is as high as 12.4 million tons, and most of them are concentrated in October, accounting for 24.66% of the total production capacity. If Xinfengming and Hengli Petrochemical can be put into production as scheduled, the impact of PTA plant overhaul on the market will be limited. If the new equipment is put into production and the equipment maintenance is on schedule, the PTA market may rebound.
There are still 2.48 million tons of new production prospects on the polyester side.
In terms of polyester, the current load is constantly increasing, and the factory's finished product inventory pressure is not large, and the overall profit is still acceptable. Enterprises such as Yisheng, Tongkun and Xinfengming have new capacity plans, and the new production is expected to be 2.48 million tons. According to the market situation, the probability of new production of polyester plants is large, and some devices may be delayed. Therefore, the demand for PTA in the market is limited.
On the whole, the demand for PTA remains stable, and if there is no major change in the device, it is just needed. The high probability of PTA new equipment being put into production is steadily advancing, and there is no problem before and after the time, but there are variables in the maintenance of old equipment. Assuming that the new PTA device is put into production as scheduled, and the historical installation is in normal condition, the PTA will only be slightly accumulated in the next September-November. At present, the PTA processing fee is around 950 yuan / ton, which is also considerable for the factory.
It is expected that the new equipment will be put into production in the long-term view of the hollow state. In the absence of large funds, the market price will not improve. Generally speaking, the current contradiction between supply and demand in the market is not prominent, and there is a lack of speculation. The market must get rid of the disadvantages and still need the cooperation of time, location and people.
Xylene Market News Summary
At the end of August, the focus of the xylene market was 6,000 yuan/ton. The market was forced to operate, the shortage of cargo and the decline in inventory provided good support, which led to the market talks pushed to 6160-6180 yuan / ton. Entering the xylene market in September, the dry goods were the first to hit. buy PC from Evergreen
Demand side:
In August, the Sinochem Hongrun PX unit was opened, and its xylene was all converted to its own use. From the current production situation, there are still a few gaps. And from the perspective of supply and flow of xylene, the probability of purchasing cargo is slightly higher.
In late August, Fuhai Chuang PX unit restarted, and the consumption of raw material xylene recovered to normal. However, due to the stocking in the early stage, the amount of purchases entering the market at the beginning of next month was limited; however, the gap in demand for MX was maintained at around 30,000 tons.
Hainan Refining & Chemical's 1 million tons PX unit was put into production until the end of September, and its market impact is more subtle.
Entering next month, Hengli Petrochemical maintains 30,000 tons of MX purchases nearby, and all of them are mainly purchased by ship, causing tight supply of domestic xylene cargo.
Before the Mid-Autumn Festival, there is still room for improvement in refined oil. Although the price of xylene is high, some gasoline blending demand is still there.
Supply surface:
In late August, the Qingdao refinery was restarted. In September, the sales volume of the company returned to normal. The main supply was for the downstream Qingdao Lidong and the system to adjust the goods, and the balance was sold around.
The sales volume of xylene in the Qinzhou refinery of PetroChina has been reduced by half, and the small sheet of xylene in South China still has a chance to fluctuate.
Demand side:
In August, the Sinochem Hongrun PX unit was opened, and its xylene was all converted to its own use. From the current production situation, there are still a few gaps. And from the perspective of supply and flow of xylene, the probability of purchasing cargo is slightly higher.
In late August, Fuhai Chuang PX unit restarted, and the consumption of raw material xylene recovered to normal. However, due to the stocking in the early stage, the amount of purchases entering the market at the beginning of next month was limited; however, the gap in demand for MX was maintained at around 30,000 tons.
Hainan Refining & Chemical's 1 million tons PX unit was put into production until the end of September, and its market impact is more subtle.
Entering next month, Hengli Petrochemical maintains 30,000 tons of MX purchases nearby, and all of them are mainly purchased by ship, causing tight supply of domestic xylene cargo.
Before the Mid-Autumn Festival, there is still room for improvement in refined oil. Although the price of xylene is high, some gasoline blending demand is still there.
Supply surface:
In late August, the Qingdao refinery was restarted. In September, the sales volume of the company returned to normal. The main supply was for the downstream Qingdao Lidong and the system to adjust the goods, and the balance was sold around.
The sales volume of xylene in the Qinzhou refinery of PetroChina has been reduced by half, and the small sheet of xylene in South China still has a chance to fluctuate.
Tuesday, August 27, 2019
Weakness in Demand for Raw Materials, Weak Pressure, and Non-aqueous Hydrofluoric Acid
At the beginning of the month, Sinochem was priced at 11,000 yuan/ton, and the price of Juhua was 10,800 yuan/ton, Dongyue was 10,900 yuan/ton, Meilan was 11,100 yuan/ton, and the on-site contract price was down by 500- from July. 800 yuan / ton; in mid-August, the hydrofluoric acid plant stocks high, actively clear inventory, downstream refrigerant demand is weak, to fixed production, buying follow-up fatigue, pharmaceutical industry centralized maintenance, the market is lacking, the focus of the transaction At the end of August, the price of raw fluorite fell, and the downstream refrigerant was difficult to change. Under the double pressure, the market of anhydrous hydrofluoric acid continued to decline. As of press time, the bidding reference in northern China was sent at 9700-100 yuan/ton. By the way, the southern China region's bidding reference is at 9800-100 yuan/ton, and the mainstream market transactions are concentrated at 9600-10000 yuan/ton. buy propylene glycol
In August, most of the anhydrous hydrofluoric acid enterprises contracted their profits. Some hydrofluoric acid enterprises stopped the maintenance and adjusted the finished goods inventory. The raw material fluorite price was slightly lowered, but the factory cost pressure is still as shown in the figure: August domestic anhydrous hydrofluoric acid The average gross profit of the market was 1,238 yuan / ton, down 620 yuan / ton from the average profit of 1858 yuan / ton in July.
In terms of forecasting costs, fluorite ore and plant selection profits are considerable, mainstream holders cut prices, but high-grade spot supply is still tight, 97 wet powder is unlikely to fall sharply, and some market participants believe that September 2,800 yuan / ton The price sent is more reasonable; in terms of supply, Linxi Tianyi, Polyfluoride, San Aifu and other manufacturers stopped maintenance, fluoride potassium, Feiyuan, Yantai Zhongrui single-line operation, the factory to sell, the offer to accompany the market; demand side The refrigerant price is weak, the buying follow-up is weak, the market is not smooth, and the transaction is difficult. On the whole, the price of raw fluorite has fallen, but it is still not expected from the hydrofluoric acid plant. The cost pressure is still high. Some factories are on the verge of loss. Some factories are shutting down to adjust the finished goods inventory. The downstream refrigerants are difficult to improve. It is not smooth, the difficulty of goods, the lack of support for the fundamentals, the pessimism of the industry, it is expected that the focus of the short-term market negotiations will continue to decline, it is expected to be around 9,500 yuan / ton in September.
In August, most of the anhydrous hydrofluoric acid enterprises contracted their profits. Some hydrofluoric acid enterprises stopped the maintenance and adjusted the finished goods inventory. The raw material fluorite price was slightly lowered, but the factory cost pressure is still as shown in the figure: August domestic anhydrous hydrofluoric acid The average gross profit of the market was 1,238 yuan / ton, down 620 yuan / ton from the average profit of 1858 yuan / ton in July.
In terms of forecasting costs, fluorite ore and plant selection profits are considerable, mainstream holders cut prices, but high-grade spot supply is still tight, 97 wet powder is unlikely to fall sharply, and some market participants believe that September 2,800 yuan / ton The price sent is more reasonable; in terms of supply, Linxi Tianyi, Polyfluoride, San Aifu and other manufacturers stopped maintenance, fluoride potassium, Feiyuan, Yantai Zhongrui single-line operation, the factory to sell, the offer to accompany the market; demand side The refrigerant price is weak, the buying follow-up is weak, the market is not smooth, and the transaction is difficult. On the whole, the price of raw fluorite has fallen, but it is still not expected from the hydrofluoric acid plant. The cost pressure is still high. Some factories are on the verge of loss. Some factories are shutting down to adjust the finished goods inventory. The downstream refrigerants are difficult to improve. It is not smooth, the difficulty of goods, the lack of support for the fundamentals, the pessimism of the industry, it is expected that the focus of the short-term market negotiations will continue to decline, it is expected to be around 9,500 yuan / ton in September.
Stearic Acid Rose Several Times in August
Entering August, the stearic acid market ushered in the most "fire" month of the year. The data shows that the market price of stearic acid rose by 3 times during the month, and the cumulative increase rate was about 500 yuan/ton. Although the current stage is in the off-season of downstream demand, the price of stearic acid continues to rise. What are the reasons?
According to Longzhong Information Analysis, the main reason is driven by the sharp rise in the price of raw palm oil. At present, the stearic acid market in China is mainly imported stearic acid and domestic stearic acid. Most of them use palm oil as the main raw material. The price of palm oil has a direct impact on the market of stearic acid.
As can be seen from the price chart of raw palm oil, palm oil began to bottom out at the end of July 2019. As of August, the cumulative increase was about 400 yuan / ton. On the 26th, the raw material price reached the highest in the year. As of the close, the main contract of palm oil futures rose 126 yuan / ton, an increase of 2.59%, the highest price reached 5034 yuan / ton. What is the reason for the surge in raw materials?
First, South American soybeans have risen sharply, import costs have risen, and soyoil prices have risen. Second, the escalation of Sino-US trade issues, the current rainy and cold weather in the Northeast, boosting the price of soybean oil, palm oil as a substitute for soybean oil, the price is higher.
It is expected that in the short term, the stearic acid market is still likely to rise, the production of raw palm oil is reduced, and the downstream is about to enter the peak demand season. buy dimethyl carbonate In the short term, the stearic acid market is favored. It is recommended to continue to pay attention to the price of raw palm oil.
According to Longzhong Information Analysis, the main reason is driven by the sharp rise in the price of raw palm oil. At present, the stearic acid market in China is mainly imported stearic acid and domestic stearic acid. Most of them use palm oil as the main raw material. The price of palm oil has a direct impact on the market of stearic acid.
As can be seen from the price chart of raw palm oil, palm oil began to bottom out at the end of July 2019. As of August, the cumulative increase was about 400 yuan / ton. On the 26th, the raw material price reached the highest in the year. As of the close, the main contract of palm oil futures rose 126 yuan / ton, an increase of 2.59%, the highest price reached 5034 yuan / ton. What is the reason for the surge in raw materials?
First, South American soybeans have risen sharply, import costs have risen, and soyoil prices have risen. Second, the escalation of Sino-US trade issues, the current rainy and cold weather in the Northeast, boosting the price of soybean oil, palm oil as a substitute for soybean oil, the price is higher.
It is expected that in the short term, the stearic acid market is still likely to rise, the production of raw palm oil is reduced, and the downstream is about to enter the peak demand season. buy dimethyl carbonate In the short term, the stearic acid market is favored. It is recommended to continue to pay attention to the price of raw palm oil.
Pure Benzene Industry Chain Operating Rate Continued to Decline in July
The monthly production of pure benzene in July 2019 was estimated to be 847,000 tons. During the month, Liaoyang Petrochemical's set of reforming equipment was overhauled for 10 days, another set of reforming equipment was overhauled for the whole month, and the constant force reforming started the load was less than 2 weeks. Fuhai created 240,000 tons of equipment for parking for the whole month, and Dushanzi's 310,000 tons of equipment. Overhaul for 10 days. In addition, Shandong Haihua, Shandong Youtai, Qingdao Refinery, and Kenli Petrochemical, which were restarted in July, were postponed and restarted. In other respects, CNOOC Taizhou, Huizhou, Dayu Petrochemical and other installations fell to 70% within the month, Fujia Dahua 350,000 tons of equipment load is low, Qingdao Lidong 295,000 tons of equipment load is low.
The operating rate continued to decline in July. Affected by product profit, the operating rates of Fujia, Lidong, CNOOC Huizhou, CNOOC Taizhou and CNOOC Datun decreased, and Fuhai Chuang, Shandong Haihua, Shandong Youtai, Qingdao Refining and Chemical, and Yanli Petrochemical extended their overhaul. period. In addition, the production of pure benzene decreased during the month due to its upstream installation problems. The maintenance period of Dushanzi was advanced from July 29th to July 20th, and began to drop at the beginning of the month. propylene carbonate market
The maintenance equipment from August to October was concentrated in August, and it is expected that the import volume will be difficult to recover in August, and the overall supply will be tight. In addition, Chongqing Huafeng's 32 million tons alcohol ketone plant and Baling Hengyi 100,000 tons of caprolactam new plant are expected to be put into operation in August, and demand is increasing. Therefore, it is expected that the overall supply and demand in East China will be tight in the third quarter.
The downstream statistics of pure benzene are mainly composed of styrene, phenol ketone, aniline, caprolactam, adipic acid and other products.
The downstream operating rate of pure benzene in July decreased from the previous month. Downstream, the Jilin Cornell aniline unit was restarted and the Wanhua MDI unit was restarted. Qingdao Bay styrene short-term parking, Shandong Wuyuan styrene parking, Dushanzi styrene parking, etc., Jinmao aniline parking. Zhejiang Juhua, Shandong Haili Caprolactam briefly stopped, Shijiazhuang Refinery, Fujian Shenyuan Caprolactam long-term parking device restarted.
In the main downstream products of pure benzene in July, the profit of styrene was better, the profit of caprolactam and adipic acid was general, and the loss of phenol and aniline.
In terms of downstream load, styrene and phenol are relatively stable, and they remain at 8-9 percent. The caprolactam load was reduced to 60%, MDI and adipic acid were only started at 50%, and the aniline operating rate fell below 50%.
The operating rate continued to decline in July. Affected by product profit, the operating rates of Fujia, Lidong, CNOOC Huizhou, CNOOC Taizhou and CNOOC Datun decreased, and Fuhai Chuang, Shandong Haihua, Shandong Youtai, Qingdao Refining and Chemical, and Yanli Petrochemical extended their overhaul. period. In addition, the production of pure benzene decreased during the month due to its upstream installation problems. The maintenance period of Dushanzi was advanced from July 29th to July 20th, and began to drop at the beginning of the month. propylene carbonate market
The maintenance equipment from August to October was concentrated in August, and it is expected that the import volume will be difficult to recover in August, and the overall supply will be tight. In addition, Chongqing Huafeng's 32 million tons alcohol ketone plant and Baling Hengyi 100,000 tons of caprolactam new plant are expected to be put into operation in August, and demand is increasing. Therefore, it is expected that the overall supply and demand in East China will be tight in the third quarter.
The downstream statistics of pure benzene are mainly composed of styrene, phenol ketone, aniline, caprolactam, adipic acid and other products.
The downstream operating rate of pure benzene in July decreased from the previous month. Downstream, the Jilin Cornell aniline unit was restarted and the Wanhua MDI unit was restarted. Qingdao Bay styrene short-term parking, Shandong Wuyuan styrene parking, Dushanzi styrene parking, etc., Jinmao aniline parking. Zhejiang Juhua, Shandong Haili Caprolactam briefly stopped, Shijiazhuang Refinery, Fujian Shenyuan Caprolactam long-term parking device restarted.
In the main downstream products of pure benzene in July, the profit of styrene was better, the profit of caprolactam and adipic acid was general, and the loss of phenol and aniline.
In terms of downstream load, styrene and phenol are relatively stable, and they remain at 8-9 percent. The caprolactam load was reduced to 60%, MDI and adipic acid were only started at 50%, and the aniline operating rate fell below 50%.
Tuesday, June 4, 2019
The Cyclic Carbonate in The Electrolyte
Domestic industrial applications, the earlier is propylene carbonate, dimethyl carbonate and diethyl carbonate. Because of its high solubility, wide liquid range and good stability, propylene carbonate has been paid attention to and applied very early in electrochemical research. In the early lithium primary batteries, propylene carbonate was used in combination with ether solvents, such as PC. +DME, or PC+DME+DOL, or PC+DME+THF. In some electrochemical non-aqueous systems, PC is often used as a solvent. Industrially, propylene carbonate is also referred to as "carbon-propylene", which is a relatively common solvent. Due to the advantages and easy availability of the PC, the electrolyte of lithium-ion batteries cannot be separated from the solvent of PC in the early stage.
PC is a solvent with obvious advantages, high chemical stability, and is not easily decomposed during rectification. It has a boiling point of 242 ° C, a melting point of -48.8 ° C, and a liquid range of up to 290 ° C, which is a very large advantage. It can be used regardless of whether it is hot or cold. It is very rare for solvents. In addition, the solubility of PC is very good, and there are many substances that can be dissolved, and it has excellent versatility. At the same time, the PC is also non-toxic, low-priced, and so on. PC also has a very interesting feature. It has a strong ability to dissolve CO2. It can dissolve 8.5 liters of CO2 per liter of PC at 2.8 atmospheres at 25 ° C, and the solubility increases rapidly when the pressure rises. Therefore, it is used industrially to absorb carbon dioxide in the mixed gas. I have seen a technical solution in the past. In the process of making a soft-pack battery, carbon dioxide is used as a shielding gas. When the electrolyte contains PC, the carbon dioxide is dissolved and absorbed by the PC after the injection, and the internal pressure of the soft-packed battery is lowered. It is tightly attached to the battery core. The idea is to take full advantage of the PC's ability to dissolve carbon dioxide.
PC has many disadvantages, one of which is that the viscosity is relatively high compared to other solvents, which leads to an electrolyte containing a high PC, although it is less likely to condense at low temperatures, but it is sticky (the actual feeling is not So exaggerated, but this is the case for lithium ion migration), which is not conducive to the migration of lithium ions. The migration of ions cannot keep up with the need, resulting in a large concentration polarization, and the rate performance will be poor. This is also confirmed by experiments. Therefore, generally in the low temperature electrolyte, if it is a small current application, PC can be used, but once the magnification is high, the PC has to carefully control the amount, otherwise the performance is difficult to see.
In the research, people gradually found that in lithium ion batteries, ethylene carbonate (EC) performed better than PC. In addition to the relative dielectric constant (EC 89) is greater than PC (PC 65), it is made into the cycle performance of the battery. It is also better than PC, so EC has slowly developed. For reasons of this reason, the film formation potential of EC on the negative electrode is relatively high. When charging, the potential of the negative electrode is continuously decreased, and the EC with higher reduction potential preferentially precipitates, which participates in the formation of the SEI film, which is advantageous for stabilizing the negative electrode and impedance. Moderate, battery performance is better.
Another advantage of EC is that after dissolution, its viscosity is smaller than PC. For lithium battery electrolytes, a low viscosity means lower ion mobility resistance, which means better battery performance. In addition, there is a hidden reason, that is, the co-embedding side effect of PC on graphite anode materials makes PC not suitable for high concentration use, and EC does not have this limitation. Slow EC replaces PC. It is an essential solvent in the electrolyte and an indispensable component.
But EC is also a problem, and the problem is not small - the melting point is as high as 37 ° C. This is a "class" with the PC. From the structural point of view, PC only has one more methyl group on the ring, but this methyl group brings about molecular asymmetry, which makes the polarity of PC smaller, and it is more difficult to crystallize, so the melting point is greatly reduced.
Among the cyclic carbonates, in addition to EC and PC, there is also a butylene carbonate BC. Since there are two more carbon atoms, BC has two structures, one is one more ethyl than EC, namely 1,2-butanediol cyclic carbonate, or abbreviated as 1,2-BC (CAS 4437-85- 8); The other is two more methyl groups than EC, namely 2,3-butanediol cyclic carbonate, or simply 2,3-BC (CAS 4437-70-1). At present, there are few studies in BC, and samples are not easy to obtain.
In addition, the structure of PC also exists an isomer, namely 1,3-propanediol cyclic carbonate (CAS 2453-03-4), whose molecular structure is a six-membered ring. Generally this compound is not called propylene carbonate (theoretically you can't get it by propylene and carbonic acid addition), but it is called trimethylene carbonate, or TMC for short. However, the TMC compound seems to be less stable and it is easy to form a polymer. By transesterification of 1,3-propanediol with dmc, TMC can theoretically be obtained, but in fact, TMC polymers are produced. Therefore, the reported method of synthesizing TMC is basically to first manufacture TMC polymer. Depolymerized under certain conditions. However, the TMC compound is relatively friendly to the human body. Many people currently study its application in the medical industry, and rarely see electrolyte research.
Of course, cyclic carbonates are far more than these. There is also a reported carbonate called catechol carbonate, also known as catechol carbonate (abbreviated CC), which is equivalent to eccentricity outside the structure of EC. This compound was obtained on the previous benzene ring and was reported as a lithium electrolyte additive many years ago.
PC is a solvent with obvious advantages, high chemical stability, and is not easily decomposed during rectification. It has a boiling point of 242 ° C, a melting point of -48.8 ° C, and a liquid range of up to 290 ° C, which is a very large advantage. It can be used regardless of whether it is hot or cold. It is very rare for solvents. In addition, the solubility of PC is very good, and there are many substances that can be dissolved, and it has excellent versatility. At the same time, the PC is also non-toxic, low-priced, and so on. PC also has a very interesting feature. It has a strong ability to dissolve CO2. It can dissolve 8.5 liters of CO2 per liter of PC at 2.8 atmospheres at 25 ° C, and the solubility increases rapidly when the pressure rises. Therefore, it is used industrially to absorb carbon dioxide in the mixed gas. I have seen a technical solution in the past. In the process of making a soft-pack battery, carbon dioxide is used as a shielding gas. When the electrolyte contains PC, the carbon dioxide is dissolved and absorbed by the PC after the injection, and the internal pressure of the soft-packed battery is lowered. It is tightly attached to the battery core. The idea is to take full advantage of the PC's ability to dissolve carbon dioxide.
PC has many disadvantages, one of which is that the viscosity is relatively high compared to other solvents, which leads to an electrolyte containing a high PC, although it is less likely to condense at low temperatures, but it is sticky (the actual feeling is not So exaggerated, but this is the case for lithium ion migration), which is not conducive to the migration of lithium ions. The migration of ions cannot keep up with the need, resulting in a large concentration polarization, and the rate performance will be poor. This is also confirmed by experiments. Therefore, generally in the low temperature electrolyte, if it is a small current application, PC can be used, but once the magnification is high, the PC has to carefully control the amount, otherwise the performance is difficult to see.
In the research, people gradually found that in lithium ion batteries, ethylene carbonate (EC) performed better than PC. In addition to the relative dielectric constant (EC 89) is greater than PC (PC 65), it is made into the cycle performance of the battery. It is also better than PC, so EC has slowly developed. For reasons of this reason, the film formation potential of EC on the negative electrode is relatively high. When charging, the potential of the negative electrode is continuously decreased, and the EC with higher reduction potential preferentially precipitates, which participates in the formation of the SEI film, which is advantageous for stabilizing the negative electrode and impedance. Moderate, battery performance is better.
Another advantage of EC is that after dissolution, its viscosity is smaller than PC. For lithium battery electrolytes, a low viscosity means lower ion mobility resistance, which means better battery performance. In addition, there is a hidden reason, that is, the co-embedding side effect of PC on graphite anode materials makes PC not suitable for high concentration use, and EC does not have this limitation. Slow EC replaces PC. It is an essential solvent in the electrolyte and an indispensable component.
But EC is also a problem, and the problem is not small - the melting point is as high as 37 ° C. This is a "class" with the PC. From the structural point of view, PC only has one more methyl group on the ring, but this methyl group brings about molecular asymmetry, which makes the polarity of PC smaller, and it is more difficult to crystallize, so the melting point is greatly reduced.
Among the cyclic carbonates, in addition to EC and PC, there is also a butylene carbonate BC. Since there are two more carbon atoms, BC has two structures, one is one more ethyl than EC, namely 1,2-butanediol cyclic carbonate, or abbreviated as 1,2-BC (CAS 4437-85- 8); The other is two more methyl groups than EC, namely 2,3-butanediol cyclic carbonate, or simply 2,3-BC (CAS 4437-70-1). At present, there are few studies in BC, and samples are not easy to obtain.
In addition, the structure of PC also exists an isomer, namely 1,3-propanediol cyclic carbonate (CAS 2453-03-4), whose molecular structure is a six-membered ring. Generally this compound is not called propylene carbonate (theoretically you can't get it by propylene and carbonic acid addition), but it is called trimethylene carbonate, or TMC for short. However, the TMC compound seems to be less stable and it is easy to form a polymer. By transesterification of 1,3-propanediol with dmc, TMC can theoretically be obtained, but in fact, TMC polymers are produced. Therefore, the reported method of synthesizing TMC is basically to first manufacture TMC polymer. Depolymerized under certain conditions. However, the TMC compound is relatively friendly to the human body. Many people currently study its application in the medical industry, and rarely see electrolyte research.
Of course, cyclic carbonates are far more than these. There is also a reported carbonate called catechol carbonate, also known as catechol carbonate (abbreviated CC), which is equivalent to eccentricity outside the structure of EC. This compound was obtained on the previous benzene ring and was reported as a lithium electrolyte additive many years ago.
Analysis of application prospects of dimethyl carbonate
Dimethyl carbonate is poorly soluble in water, but can be miscible with almost all organic solvents such as alcohols, ethers, and ketones. DMC is very low in toxicity and was listed as a non-toxic product in Europe in 1992. It is an environmentally friendly chemical raw material that meets the requirements of modern "cleaning process".
Dimethyl carbonate (DMC) is an important organic chemical intermediate. It can be widely used in carbonylation, methylation, and methylation because of its molecular structure containing carbonyl, methyl, methoxy and carbonyl methoxy groups. Organic synthesis reactions such as oxylation and carbonyl methylation for the production of polycarbonates, isocyanates, polyurethanes, polycarbonate diols, allyl diglycol carbonate, naphthyl carbamate ( Carbaryl, anisole, tetramethylammonium ammonium, long-chain alkyl carbonate, carbohydrazide, malonate, propylene diacetate, diethyl carbonate, triphosgene, furazolidone, thioglycolate A variety of chemical products such as esters, methyl aniline.
Dimethyl carbonate (DMC) is an environmentally friendly organic synthesis intermediate that can replace highly toxic phosgene and dimethyl sulfate as hydroxylation reagents and methylating agents, and it is also an ideal inclusion. Oxygen gasoline additive.
At present, the synthesis methods of DMC include phosgene method, methanol oxidation hydroxylation method and transesterification method. Among them, the transesterification mower uses cyclohexane to form a cyclic carbonate by carbon dioxide and alkylene oxide, and then transesterifies with methanol to obtain dimethyl carbonate. The method has important industrial application prospects due to simple process, high reaction conversion rate and selectivity, and co-production of glycol.
Dimethyl carbonate (DMC) is an important organic chemical intermediate. It can be widely used in carbonylation, methylation, and methylation because of its molecular structure containing carbonyl, methyl, methoxy and carbonyl methoxy groups. Organic synthesis reactions such as oxylation and carbonyl methylation for the production of polycarbonates, isocyanates, polyurethanes, polycarbonate diols, allyl diglycol carbonate, naphthyl carbamate ( Carbaryl, anisole, tetramethylammonium ammonium, long-chain alkyl carbonate, carbohydrazide, malonate, propylene diacetate, diethyl carbonate, triphosgene, furazolidone, thioglycolate A variety of chemical products such as esters, methyl aniline.
Dimethyl carbonate (DMC) is an environmentally friendly organic synthesis intermediate that can replace highly toxic phosgene and dimethyl sulfate as hydroxylation reagents and methylating agents, and it is also an ideal inclusion. Oxygen gasoline additive.
At present, the synthesis methods of DMC include phosgene method, methanol oxidation hydroxylation method and transesterification method. Among them, the transesterification mower uses cyclohexane to form a cyclic carbonate by carbon dioxide and alkylene oxide, and then transesterifies with methanol to obtain dimethyl carbonate. The method has important industrial application prospects due to simple process, high reaction conversion rate and selectivity, and co-production of glycol.
Monday, June 3, 2019
What are the applications of propylene glycol?
Propylene glycol is miscible with water, ethanol and various organic solvents. Propylene glycol can be used as raw material for unsaturated polyester resin.
1. Propylene glycol is used as raw materials for resin, plasticizer, surfactant, emulsifier and demulsifier, as well as antifreeze and heat carrier.
2. Propylene glycol is used as fixed solution, solvent, antifreeze, plasticizer and dehydrating agent for gas chromatography.
3. Carrier solvent;Wetting agents;Moisturizing factor;Anticaking agent.Antioxidants;Tissue improvers;Surfactant;Stabilizing agent;Thickener;Dough conditioner;Emulsifier;Seasoning;Excipients;Processing AIDS.GB 2760 ~ 96 is as food processing additives.It mainly used for various spices, pigments, preservatives solvent, vanilla beans, roasted coffee granules, natural spices extraction solvent.Humectant and softener for confectionery, bread, packaged meats, cheese, etc.
4. Propylene glycol is the intermediate of the fungicide phenyl ether metronidazole.
5. As a solvent, propylene glycol can dissolve preservatives, pigments, antioxidants and other food additives that are difficult to dissolve in water, and then add food;It has stronger hygroscopicity,and protect wet and antifreeze action to food.
6. Propylene glycol is an important raw material of unsaturated polyester, epoxy resin, polyurethane resin, the amount of this aspect accounts for about 45% of the total consumption of propylene glycol, this unsaturated polyester is widely used in surface coating and reinforced plastics.Propylene glycol is viscous and hygroscopic, and non-toxic, so it can be used in the food, medicine and cosmetics industry widely as a hygroscopic agent, antifreeze, lubricant and solvent.In the food industry, propylene glycol and fatty acid react to form propylene glycol fatty acid ester, which is mainly used as food emulsifier. Propylene glycol is a good solvent for condiment and pigment.Propylene glycol in the pharmaceutical industry is often used to manufacture all kinds of ointment, ointment solvent, softener and excipient, etc., because propylene glycol and various spices have better mutual solubility, it also used as cosmetics solvent and softener and so on.Moreover, Propylene glycol is used as a tobacco humidifier, anti-mildew agent, food processing equipment lubricating oil and food marking ink solvent.The aqueous solution of propylene glycol is an effective antifreeze.
7. Propylene glycol is used as drug carrier and granular drug agent.It can be used as moisturizer, softener and solvent in cosmetics.Tobacco industry can be used as tobacco flavor, tobacco moisture agents, preservatives.In the food industry as a flavor, food coloring solvent, food packaging softener, food anti-stick agent.It can be used for the production of unsaturated polyester resin, plastic plasticizer, dehydrating agent, surfactant, curing agent, binder raw materials.And it can be used in paint, pesticides, coatings and other industries. More details pls check here.
1. Propylene glycol is used as raw materials for resin, plasticizer, surfactant, emulsifier and demulsifier, as well as antifreeze and heat carrier.
2. Propylene glycol is used as fixed solution, solvent, antifreeze, plasticizer and dehydrating agent for gas chromatography.
3. Carrier solvent;Wetting agents;Moisturizing factor;Anticaking agent.Antioxidants;Tissue improvers;Surfactant;Stabilizing agent;Thickener;Dough conditioner;Emulsifier;Seasoning;Excipients;Processing AIDS.GB 2760 ~ 96 is as food processing additives.It mainly used for various spices, pigments, preservatives solvent, vanilla beans, roasted coffee granules, natural spices extraction solvent.Humectant and softener for confectionery, bread, packaged meats, cheese, etc.
4. Propylene glycol is the intermediate of the fungicide phenyl ether metronidazole.
5. As a solvent, propylene glycol can dissolve preservatives, pigments, antioxidants and other food additives that are difficult to dissolve in water, and then add food;It has stronger hygroscopicity,and protect wet and antifreeze action to food.
6. Propylene glycol is an important raw material of unsaturated polyester, epoxy resin, polyurethane resin, the amount of this aspect accounts for about 45% of the total consumption of propylene glycol, this unsaturated polyester is widely used in surface coating and reinforced plastics.Propylene glycol is viscous and hygroscopic, and non-toxic, so it can be used in the food, medicine and cosmetics industry widely as a hygroscopic agent, antifreeze, lubricant and solvent.In the food industry, propylene glycol and fatty acid react to form propylene glycol fatty acid ester, which is mainly used as food emulsifier. Propylene glycol is a good solvent for condiment and pigment.Propylene glycol in the pharmaceutical industry is often used to manufacture all kinds of ointment, ointment solvent, softener and excipient, etc., because propylene glycol and various spices have better mutual solubility, it also used as cosmetics solvent and softener and so on.Moreover, Propylene glycol is used as a tobacco humidifier, anti-mildew agent, food processing equipment lubricating oil and food marking ink solvent.The aqueous solution of propylene glycol is an effective antifreeze.
7. Propylene glycol is used as drug carrier and granular drug agent.It can be used as moisturizer, softener and solvent in cosmetics.Tobacco industry can be used as tobacco flavor, tobacco moisture agents, preservatives.In the food industry as a flavor, food coloring solvent, food packaging softener, food anti-stick agent.It can be used for the production of unsaturated polyester resin, plastic plasticizer, dehydrating agent, surfactant, curing agent, binder raw materials.And it can be used in paint, pesticides, coatings and other industries. More details pls check here.
The usage of DMC
Dimethyl carbonate of Evergreen Chemical is insoluble in water, but can be mixed with alcohol, ether, ketone and almost all organic solvents. DMC, with low toxicity, was listed as a non-toxic product in Europe in 1992. It is an environment-friendly chemical material in line with the requirements of modern "clean technology".
Dimethyl carbonate (DMC) is an important organic chemical intermediate. Because its molecular structure contains carbonyl, methyl, methoxide and carbonyl methoxide, it can be widely used in organic synthesis reactions such as carbonylation, methylation, methoxylation and carbonyl methylation. It used in the production of polycarbonate, isocyanate, polyurethane, polycarbonate glycol, allyl diethylene glycol carbonate, methyl amino formic acid naphthalene ester (carbaryl), benzene methyl ether ammonium, four methyl alcohol, long chain alkyl carbonate, carbon hydrazide, malonic ester, propylene urethane, diethyl carbonate, three phosgene, furazolidone, hydrazine methyl formate, aniline methyl formate and other chemical products.
1、Instead of phosgene to synthesize polycarbonate
2、As a non-toxic or low-toxic solvent, alternative to the traditional toxic solvents such as toluene, xylene, acetone, butanone, ethyl acetate, butyl acetate, etc., DMC used in the paint (nitro paint, furniture paint, automotive paint) and adhesive industry.
3、In the field of pesticides, DMC is mainly used to produce methyl isocyanate and then some carbamate pesticides. The varieties of pesticides that can be produced include: carbaryl, baylor, carbaryl, budweiser, methadol, etc.
4、In the part of medicine, it is mainly used to synthesize anti-infective drugs, antipyretic and analgesic drugs, vitamin drugs and drugs for the central nervous system. DMC is mainly used for the synthesis of ciprofloxacin, norfloxacin (norfloxacin), piperic acid, ciprofloxacin lactate and other raw materials, mainly used as methylation agent.
5、Replacing MTBE as gasoline additive to improve octane value of gasoline (this use is mainly in China)
6、Lithium battery electrolyte
Lithium battery electrolyte is mainly composed of organic solvents, such as propylene carbonate, (vinyl carbonate), (diethyl carbonate), (ethyl methyl carbonate).
7、Developer
Tetramethyl alcohol amine can be produced by dimethyl carbonate. P type photoresist developer which is widely used as photoresist developer in large scale advanced integrated circuit lithography.
Linyi Evergreen Chemical Co., Ltd., founded in October 2013, is a wholly-owned subsidiary of ECHEMI group, covering an area of 85 Acres, with a registered capital of 30.5 million yuan, the main production and operation of propylene oxide and other products, propylene carbonate, propylene glycol, dimethyl carbonate and so on.
Evergreen is located in Shandong Linyi Lingang economic development zone, 30 km from lanshan port, 50 km from rizhao port, 100 km from lianyungang port, 120 km from huangdao port. In 2018, Evergreen had passed the work review of enterprise safety production standardization, safety risk hierarchical management and control, and the construction of double prevention system of accident hidden danger investigation and treatment.
Click here to view more.
Dimethyl carbonate (DMC) is an important organic chemical intermediate. Because its molecular structure contains carbonyl, methyl, methoxide and carbonyl methoxide, it can be widely used in organic synthesis reactions such as carbonylation, methylation, methoxylation and carbonyl methylation. It used in the production of polycarbonate, isocyanate, polyurethane, polycarbonate glycol, allyl diethylene glycol carbonate, methyl amino formic acid naphthalene ester (carbaryl), benzene methyl ether ammonium, four methyl alcohol, long chain alkyl carbonate, carbon hydrazide, malonic ester, propylene urethane, diethyl carbonate, three phosgene, furazolidone, hydrazine methyl formate, aniline methyl formate and other chemical products.
1、Instead of phosgene to synthesize polycarbonate
2、As a non-toxic or low-toxic solvent, alternative to the traditional toxic solvents such as toluene, xylene, acetone, butanone, ethyl acetate, butyl acetate, etc., DMC used in the paint (nitro paint, furniture paint, automotive paint) and adhesive industry.
3、In the field of pesticides, DMC is mainly used to produce methyl isocyanate and then some carbamate pesticides. The varieties of pesticides that can be produced include: carbaryl, baylor, carbaryl, budweiser, methadol, etc.
4、In the part of medicine, it is mainly used to synthesize anti-infective drugs, antipyretic and analgesic drugs, vitamin drugs and drugs for the central nervous system. DMC is mainly used for the synthesis of ciprofloxacin, norfloxacin (norfloxacin), piperic acid, ciprofloxacin lactate and other raw materials, mainly used as methylation agent.
5、Replacing MTBE as gasoline additive to improve octane value of gasoline (this use is mainly in China)
6、Lithium battery electrolyte
Lithium battery electrolyte is mainly composed of organic solvents, such as propylene carbonate, (vinyl carbonate), (diethyl carbonate), (ethyl methyl carbonate).
7、Developer
Tetramethyl alcohol amine can be produced by dimethyl carbonate. P type photoresist developer which is widely used as photoresist developer in large scale advanced integrated circuit lithography.
Linyi Evergreen Chemical Co., Ltd., founded in October 2013, is a wholly-owned subsidiary of ECHEMI group, covering an area of 85 Acres, with a registered capital of 30.5 million yuan, the main production and operation of propylene oxide and other products, propylene carbonate, propylene glycol, dimethyl carbonate and so on.
Evergreen is located in Shandong Linyi Lingang economic development zone, 30 km from lanshan port, 50 km from rizhao port, 100 km from lianyungang port, 120 km from huangdao port. In 2018, Evergreen had passed the work review of enterprise safety production standardization, safety risk hierarchical management and control, and the construction of double prevention system of accident hidden danger investigation and treatment.
Click here to view more.
Thursday, May 30, 2019
Quality Standard of Propylene Carbonate
Quality Standard of PC
| PC Content | 99.9%min | 99.7%min | 99.5%min |
| Moisture，% | ≤ 0.01 | ≤ 0.05 | ≤ 0.05 |
| Chrominance (platinum-cobalt) No. | ≤5 | ≤10 | ≤10 |
| Appearance | clear colorless, no suspended matter, transparent liquid without mechanical impurities | ||
| Density（20℃）g/cm³ | 1.20±0.005 | 1.20±0.005 | 1.20±0.005 |
Packing in galvanized iron drum or paint drum, net weight of each drum is 250±0.5kg. Moreover package can also use ISO TANK or according to customer's requirement. This product should be stored in a cool, ventilated and dry place.
Usage of propylene glycol carbonate(PC)
Propylene carbonate (propylene glycol carbonate) is soluble in water and carbon tetrachloride, mixes with ether, acetone, benzene and other miscible, is a good polar solvent, nature is stable, non-toxic solvent, pure, no corrosion of carbon steel equipment, used for removal of natural gas, petroleum cracking gas, carbon dioxide and hydrogen sulfide in synthetic ammonia feed gas, is an ideal solvent, can also be used as plasticizer, spinning solvent or water solvent dye pigment dispersant, oily solvent and extracting agent of olefins and aromatics. Based on people's concern for resources and environmental problems and the social demand for sustainable development, green chemistry with the goal of eliminating pollution, making rational use of resources and achieving sustainable development has become the hot spot and frontier of current chemistry research. Many processes will be replaced by clean and environmentally friendly processes. The continuous promotion and application of dimethyl carbonate, polycarbonate and polyurethane in its downstream products will inevitably increase the market demand for propylene carbonate.
At present, the most important is used to remove carbon dioxide and hydrogen sulfide from natural gas, oil pyrolysis gas, oil field gas and synthetic ammonia conversion gas.In the electronic industry, it can be used as an excellent medium for high-energy batteries and capacitors, and as a solvent and plasticizer for polymers.
Propylene carbonate can also be used as an oil solvent and as an extraction agent for olefins and aromatics.In the textile industry can be used as synthetic fiber additives and fixatives, spinning solvents or water-solvent dye pigment dispersant; In addition, it is an extremely versatile organic synthesis of raw materials and intermediates.
more detail pls check here
Propylene carbonate can also be used as an oil solvent and as an extraction agent for olefins and aromatics.In the textile industry can be used as synthetic fiber additives and fixatives, spinning solvents or water-solvent dye pigment dispersant; In addition, it is an extremely versatile organic synthesis of raw materials and intermediates.
more detail pls check here
Top Propylene Carbonate Manufacturing Company - Evergreen Chemical
What's Propylene carbonate?
Propylene carbonate is a colorless to yellowish liquid with fruity odor. It can be used as solvent for foundry, polyester polyol, wire coating, polyurethane, pesticide formulation and coating applications.
PC is used in coatings technology for Wire enamels based on polyesters, Polyurethanes, Polyesterimides, Epoxy and Phenol resins. Propylene carbonate (PC) are used in Foundry, Ppolyester polyol, Wire coating, Polyurethane, Pesticide solvent, Solvent for manufactured wood products, Surface coatings, Paint stripping and Ttextile production and cleaners.
The unique propertie of propylene carbonate (PC) is Organic highly aprotic solvent.
Linyi Evergreen Chemical Co., Ltd., founded in October 2013, is a wholly-owned subsidiary of ECHEMI group, covering an area of 85 Acres, with a registered capital of 30.5 million yuan, the main production and operation of propylene oxide and other products, propylene carbonate, propylene glycol, dimethyl carbonate and so on.
Evergreen is located in Shandong Linyi Lingang economic development zone, 30 km from lanshan port, 50 km from rizhao port, 100 km from lianyungang port, 120 km from huangdao port. In 2018, Evergreen had passed the work review of enterprise safety production standardization, safety risk hierarchical management and control, and the construction of double prevention system of accident hidden danger investigation and treatment.
Propylene carbonate is a colorless to yellowish liquid with fruity odor. It can be used as solvent for foundry, polyester polyol, wire coating, polyurethane, pesticide formulation and coating applications.
PC is used in coatings technology for Wire enamels based on polyesters, Polyurethanes, Polyesterimides, Epoxy and Phenol resins. Propylene carbonate (PC) are used in Foundry, Ppolyester polyol, Wire coating, Polyurethane, Pesticide solvent, Solvent for manufactured wood products, Surface coatings, Paint stripping and Ttextile production and cleaners.
The unique propertie of propylene carbonate (PC) is Organic highly aprotic solvent.
Linyi Evergreen Chemical Co., Ltd., founded in October 2013, is a wholly-owned subsidiary of ECHEMI group, covering an area of 85 Acres, with a registered capital of 30.5 million yuan, the main production and operation of propylene oxide and other products, propylene carbonate, propylene glycol, dimethyl carbonate and so on.
Evergreen is located in Shandong Linyi Lingang economic development zone, 30 km from lanshan port, 50 km from rizhao port, 100 km from lianyungang port, 120 km from huangdao port. In 2018, Evergreen had passed the work review of enterprise safety production standardization, safety risk hierarchical management and control, and the construction of double prevention system of accident hidden danger investigation and treatment.
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