发明名称 |
BLOCK COPOLYMERS OF DIENE HAVING THEIR TERMINAL END BLOCKS OF A RANDOM COPOLYMER OF STYRENE OR ALKYLSTYRENE AND AN ALPHA-METHYLSTYRENE, AND THEIR PREPARATION |
摘要 |
Block copolymers are prepared having end blocks with random copolymer of styrene and/or alkyl substituted derivatives and alpha-methylstyrene ranges from 1:0.5 to 1:2.5, a central block of a polydiene polymer joins the terminal blocks. The block copolymers contain from 10 to 90 weight percent of polydiene, the remaining portion being of random (alkyl) styrene-alpha-methylstyrene copolymer. The polymers range from medium impact polystyrene type polymer of low polydiene content to thermoplastic elastomers of high polydiene content. |
申请公布号 |
DE3071085(D1) |
申请公布日期 |
1985.10.24 |
申请号 |
DE19803071085 |
申请日期 |
1980.02.13 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
TUNG, LU HO;LO, GRACE Y-S |
分类号 |
C08F297/04;(IPC1-7):C08F297/04 |
主分类号 |
C08F297/04 |
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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