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    PRODUCTION METHOD FOR VINYL CHLORIDE BASED COPOLYMER, AND VINYL CHLORIDE BASED COPOLYMER PRODUCED THEREBY
    1.
    发明公开
    PRODUCTION METHOD FOR VINYL CHLORIDE BASED COPOLYMER, AND VINYL CHLORIDE BASED COPOLYMER PRODUCED THEREBY 审中-公开

    公开(公告)号：EP3243852A4

    公开(公告)日：2018-01-03

    申请号：EP16820907

    申请日：2016-07-29

    申请人： LG CHEMICAL LTD

    发明人： JU JIN HYUCK ,  HA HYUN KYOU ,  LIM JOONG CHUL ,  JEON YANG JUN ,  KANG MIN JEONG

    IPC分类号： C08F214/06 ,  C08F222/40

    CPC分类号： C08F214/06 ,  C08F222/40 ,  C08F259/04 ,  C08G73/12

    摘要： The present invention relates to a method for preparing a vinyl chloride copolymer having good heat resistance and a vinyl chloride copolymer produced by the same. In the preparation method, by not injecting an N-substituted maleimide based compound used as a comonomer together with a vinyl chloride monomer at one time in a pre-polymerization step, but in division in a specific ratio, a copolymer with a uniform distribution of the N-substituted maleimide based compound and the vinyl chloride monomer may be easily prepared, and the vinyl chloride copolymer may have good heat resistance. Accordingly, the preparation method of a vinyl chloride copolymer and the vinyl chloride copolymer according to the present invention may be easily applied to industries requiring the copolymer, particularly industries requiring a resin having good heat resistance as well as industries using a vinyl chloride resin.