发明名称 |
THERMOPLASTIC COPOLYMER AND PROCESS FOR THE PRODUCTION THEREOF |
摘要 |
<p>In manufacturing a thermoplastic copolymer by copolymerizing an aromatic vinyl monomer, a vinyl cyanide monomer, and, when necessary, a vinyl monomer (a) copolymerizable with the above two monomers, at least a part or all of the vinyl cyanide monomer is put in a reactor and copolymerizing reaction is started, and a weight of an unreacted portion of the aromatic vinyl monomer is caused to become greater than a weight of an unreacted portion of the vinyl cyanide monomer when all the monomer components are put in the reactor. By doing so, a ratio of the vinyl cyanide monomer in a structural unit of a thermoplastic copolymer produced at latter stages of the copolymerizing reaction is lowered. Thus, the present invention is capable of providing a thermoplastic copolymer which has excellent physical properties such as good heat resistance and good mechanical strength and is hard to discolor, as well as a manufacturing method thereof.</p> |
申请公布号 |
EP0842958(A1) |
申请公布日期 |
1998.05.20 |
申请号 |
EP19970924270 |
申请日期 |
1997.05.30 |
申请人 |
NIPPON SHOKUBAI CO., LTD. |
发明人 |
YAMAGUCHI, MINORU;KOSO, OSAMU;SHIMOYAMA, FUMIOKI;FUJIOKA, KAZUMI |
分类号 |
C08F2/00;C08F212/00;C08F212/10;(IPC1-7):C08F212/10 |
主分类号 |
C08F2/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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