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According to Feng Yongsen, polyanionic cellulose (PAC) is a high-performance cellulose ether developed in the late last century. After being dissolved in a certain concentration of salt water, polyanionic cellulose will exhibit good thickening ability, solution thermal stability and rheology. Because the polyanionic cellulose has a relatively concentrated molecular weight distribution and a relatively uniform distribution of substituent groups, it has excellent salt tolerance and water loss resistance, and can effectively control the loss of fluids. It is widely used in marine or roadbed oil drilling applications. Used as a fluid loss or thickener in drilling fluids. At the same time, polyanionic cellulose also has other cellulose ether thickening, suspension, dispersion, emulsification, bonding, water retention and other properties, it can be widely used in chemical, coatings, food, paper, building materials, and other daily chemical industries. At present, only developed countries such as the United States and Sweden have carried out the production of polyanionic cellulose (PAC). China is still in the stage of promotion and application.
Feng Yongsen estimates that the world's annual PAC demand is more than 200,000 tons, and its usage is increasing year by year, and the field is expanding. With the acceleration of the development of large-scale offshore oil fields in China, the amount of PAC will also continue to increase, and is expected to reach 10,000 tons. After joining the WTO, China's PAC exports to the rest of the world with its price and quality advantages. Among them, the United States, Canada, Russia, Singapore, India, Iran, Malaysia, Thailand and other countries are the major export markets.
It is reported that Teng Chemical is one of the key manufacturers of cellulose ethers in China, and is the only company in China that can produce both ionic and non-ionic cellulose ethers. It currently has four domestic first-class cellulose ether production lines. Among them, polyanionic cellulose is a leading product of Teng Chemical with independent intellectual property rights.
Demand for polyanionic cellulose will increase year by year
On August 20, the “2010 National Oilfield Chemicals Development and Application Seminar†sponsored by China Chemical Industry News was held in Feicheng City, Shandong Province. Feng Yongsen, the chief engineer of Shandong Yiteng Chemical Co., Ltd., made an in-depth analysis of the application status of polyanionic cellulose.