发明授权
US4101531A Anionic copolymerization of 2-pyrrolidone with caprolactam or piperidone
失效
2-吡咯烷酮与己内酰胺或哌啶酮的阴离子共聚
- 专利标题： Anionic copolymerization of 2-pyrrolidone with caprolactam or piperidone
- 专利标题（中）： 2-吡咯烷酮与己内酰胺或哌啶酮的阴离子共聚
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申请号： US790776申请日： 1977-04-25
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公开(公告)号： US4101531A公开(公告)日： 1978-07-18
- 发明人: Robert Bacskai
- 申请人： Robert Bacskai
- 申请人地址： CA San Francisco
- 专利权人： Chevron Research Company
- 当前专利权人： Chevron Research Company
- 当前专利权人地址： CA San Francisco
- 主分类号： C08F4/08
- IPC分类号： C08F4/08 ; C08G69/24
摘要：
Copolymers of 2-pyrrolidone and C.sub.5 -C.sub.6 lactams (caprolactam and piperidone) are provided in solid form, at relatively high rates and molecular weights by polymerization in the presence of alkaline catalysts and carbon dioxide, by the inclusion of an auxiliary catalyst and a copolymerization promoter comprising certain onium salts and N-acyl lactams, respectively.
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