Michael Best & Friedrich LLP
Vinyl chloride-based copolymer resin and a method of preparing the same
The present invention relates to an inner-plasticized vinyl chloride-based copolymer resin not requiring plasticizers and a preparation method thereof. Specifically, the vinyl chloride-based copolymer resin is prepared by a suspension polymerization method of initiating the polymerization of vinyl chloride monomer, feeding a certain amount of butyl acrylate continuously or discontinuously thereinto and carrying out the additional polymerization at the temperature higher than the polymerization initiation temperature so as to prepare a core-shell type vinyl chloride-based random copolymer resin. The vinyl chloride-based copolymer resin of core-shell structure prepared by the present invention includes vinyl chloride-butyl acrylate copolymer, and it can provide a vinyl chloride-butyl acrylate copolymer product which can be processed without plasticizers positively necessary to produce a soft product.
Hanwha Chemical Corporation
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inventional additional additional additional inventional inventional additional additional
Sang-Hyun Ji-Woo Yong-Kook Jung-Ho Jee-Hyong
Cho Kim Jung Kong Lee