发明授权
- 专利标题: Polychloroprene elastomer
- 专利标题(中): 聚氯乙烯弹性体
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申请号: US491208申请日: 1974-07-24
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公开(公告)号: US4146592A公开(公告)日: 1979-03-27
- 发明人: Chojiro Kitagawa , Ichiro Fukuoka , Takashi Kadowaki , Shoji Kimura , Takehiko Nishimura , Kanehisa Hanabusa
- 申请人: Chojiro Kitagawa , Ichiro Fukuoka , Takashi Kadowaki , Shoji Kimura , Takehiko Nishimura , Kanehisa Hanabusa
- 申请人地址: JPX Tokyo
- 专利权人: Denki Kagaku Kogyo Kabushiki Kaisha
- 当前专利权人: Denki Kagaku Kogyo Kabushiki Kaisha
- 当前专利权人地址: JPX Tokyo
- 主分类号: C08F36/18
- IPC分类号: C08F36/18 ; C08L11/00 ; C08L9/02
摘要:
A process is disclosed for preparing a polycloroprene elastomer consisting of a blend of from 20 to 80 parts by weight of (a) a toluene-insoluble gel polymer and from 80 to 20 parts by weight of (b) a toluene-soluble sol polymer, the process comprising preparing the toluene-insoluble gel polymer by polymerizing chloroprene or a mixture of chloroprene with a small amount of at least one copolymerizable monomer in the presence of a suitable cross-linking agent, preparing the toluene-soluble sol polymer by polymerizing chloroprene or a mixture of chloroprene with a small amount of at least one copolymerizable monomer and blending the gel and sol polymers wherein an improved elastomer is obtained by polymerizing the toluene-insoluble gel polymer to a cross-linking density of at least 2.4 .times. 10.sup.-6 to a monomer conversation of at least 80%.