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Vinyl Acetate Copolymer Resin--The Necessary Raw Material of Coating Manufacturing


Vinyl chloride-vinyl acetate copolymer resin is got through the evocating agent between vinyl chloride monomer and vinyl acetate. Vinyl acetate monomer is gradually added to control the percentage content of vinyl acetate in the copolymer in order to achieve different performance requirements. It is one of the earliest industrialized vinyl chloride copolymer resins, and also is the most important type, it accounted 80%-90% of the total production.
It was reported that vinyl chloride-vinyl acetate copolymer resin was first produced by German and United States in 1929, but the related literature appeared in 1975. Buna Company in German was the first who applied the patent. During 1975 to 1983, the researching team leaded by SchirgeHarard and Schlegelroland researched the synthesis conditions between vinyl chloride-vinyl acetate emulsion and micro-suspension technics. In 1988, the Soviet Union studied a variety of factors in the micro-emulsification process on the performance of resin. The major producers in world are mainly in United States, German, Japan and China. In China, the production of vinyl chloride-vinyl acetate copolymer resin started in 1960s.
At present, China polyvinyl chloride (PVC) market was led to the blind capacity expansion by the short supply a few years ago, the annual domestic market demand is over 700 million tons, while the actual production capacity has reached more than 1,000 tons. However, due to the unstable quality, uneven particle size, export is a difficult road. The production of vinyl chloride-vinyl acetate copolymer resin can proceed the procedures of digestion and absorption of excess domestic production capacity of polyvinyl chloride (PVC). Taking advantage of chloro ethylene with cheap cost to produce vinyl chloride-vinyl acetate copolymer resin has an important economic value.