发明授权
US3671492A 1:1 alternating copolymers of carbonyl or thiocarbonyl-containing non-conjugated compounds and conjugated compounds and method of preparation
失效
1：1替代苯乙烯或含巯基的非共轭化合物和共轭化合物的共聚物及其制备方法
- 专利标题： 1:1 alternating copolymers of carbonyl or thiocarbonyl-containing non-conjugated compounds and conjugated compounds and method of preparation
- 专利标题（中）： 1：1替代苯乙烯或含巯基的非共轭化合物和共轭化合物的共聚物及其制备方法
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申请号： US2008770申请日： 1970-03-16
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公开(公告)号： US3671492A公开(公告)日： 1972-06-20
- 发明人: NAKAGUCHI KOHEI , KAWASUMI SHOHACHI , HIROOKA MASAAKI , YABUUCHI HIROSHI , TAKAO HIROYOSHI
- 申请人： SUMITOMO CHEMICAL CO
- 专利权人： Sumitomo Chemical Co
- 当前专利权人： Sumitomo Chemical Co
- 优先权： JP4548065 1965-07-26; JP3576366 1966-06-02; JP3576466 1966-06-02; JP4406065 1965-07-22; JP4649565 1965-07-30
- 主分类号： C08F2/00
- IPC分类号： C08F2/00 ; C08F4/12 ; C08F10/00 ; C08F20/62 ; C08F3/40 ; C08F3/42 ; C08F3/74
摘要：
A novel alternating copolymer is prepared by copolymerizing a compound having a polar group, such as a carbonyl or thiocarbonyl group, at a non-conjugated position and a conjugated vinyl compound in the presence of an organoaluminum halide. Alternating copolymers thus-produced are superior in thermal stability to conventional random copolymers and is resistant to coloration. Alternating copolymers obtained by copolymerizing vinyl acetate and methyl acrylate or acrylonitrile are preferred examples of these products.
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