| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a vinyl chloride resin having a particle size distribution narrow enough to lower the fine content of the waste liquor and excellent impact resistance. SOLUTION: The process for producing a vinyl chloride resin is one for producing a vinyl chloride resin prepared by grafting a vinyl chloride-based vinyl monomer onto an acrylic copolymer (A) of a mean particle diameter of 60-250 nm obtained by grafting 10-60 wt.% (a) mixed monomer comprising 100 pts.wt. radical-polymerizable monomer based on a (meth)acrylate monomer which can give a homopolymer of a glass transition temperature of -55°C to below -10°C and 1.5-10 pts.wt. polyfunctional monomer onto 40-90 wt.% (B) copolymer comprising 100 pts.wt. radically polymerizable monomer which can give a homopolymer of a glass transition temperature of -140°C to below -60°C and 0.1-1 pt.wt. polyfunctional monomer, wherein a polyoxyethylene alkyl ether is used as an emulsifier/dispersant in the production of copolymer A. COPYRIGHT: (C)2003,JPO
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