| 摘要 |
A method for preparing a vinyl chloride graft copolymer resin is provided to improve the heat stability while maintaining impact resistance, thereby solving the problems of thermal discoloration and degradation of physical properties during processing. A method for preparing a vinyl chloride graft copolymer resin comprises a step of carrying out suspension polymerization of acrylic copolymer latex and vinyl chloride monomers in the presence of a chelating agent. In the suspension polymerization step, a reaction mixture comprising 100 parts by weight of vinyl chloride monomers, 0.1-50 parts by weight of acrylic copolymer latex. 0.01-10 parts by weight of a coagulating agent, 0.1-20 parts by weight of a dispersant, 0.01-10 parts by weight of a polymerization initiator and 100-500 parts by weight of deionized water is subjected to polymerization in the presence of 0.1-10 parts by weight of a chelating agent.
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