发明授权
- 专利标题： Process for producing a low gloss thermoplastic resin
- 专利标题（中）： 低光泽热塑性树脂的制造方法
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申请号： US135470申请日： 1987-12-21
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公开(公告)号： US4877844A公开(公告)日： 1989-10-31
- 发明人: Kazuo Kishida , Yutaka Toyooka , Yoshiyuki Mikami
- 申请人： Kazuo Kishida , Yutaka Toyooka , Yoshiyuki Mikami
- 申请人地址： JPX Tokyo
- 专利权人： Mitsubishi Rayon Company Limited
- 当前专利权人： Mitsubishi Rayon Company Limited
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX60-98035 19850510; JPX60-187113 19850826
- 主分类号： C08F236/12
- IPC分类号： C08F236/12 ; C08F279/02
摘要：
A process for producing a low gloss thermoplastic resin which comprises polymerizing in two steps from 20 to 70 parts by weight of a butadiene polymer, at least 70% by weight of which is constituted by butadiene, with from 30 to 80 parts by weight of a total of from 15 to 40% by weight of a vinyl cyanide monomer and from 60 to 85% by weight of an aromatic vinyl monomer, characterized in that for the polymerization of the first step, the butadiene polymer, the vinyl cyanide monomer and the aromatic vinyl monomer were charged in amounts corresponding to from 20 to 80% by weight of the entire butadiene polymer, from 20 to 80% by weight of the entire vinyl cyanide monomer and from 20 to 80% by weight of the entire aromatic vinyl monomer, respectively, and after the completion of the polymerization of the first step, the rest of the butadiene polymer, the vinyl cyanide monomer and the aromatic vinyl monomer were charged for the polymerization of the second step.
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