发明名称 |
TAPERED BLOCK STYRENE/BUTADIENE COPOLYMERS |
摘要 |
A method for preparing tapered block copolymers in a polymerization process by charging an initiator and monomers sequentially with one or more charges of first one of the monomers, then with a mixture of the two monomers, and then with one or more charges of the second monomer alternating with one or more charges of the first monomer to produce a polymodal tapered block copolymer. Suitable monomers include conjugated dienes and monovinylaromatic compounds. The copolymers are particularly useful for shrink film packaging applications.
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申请公布号 |
CA2028410(C) |
申请公布日期 |
1996.09.17 |
申请号 |
CA19902028410 |
申请日期 |
1990.10.24 |
申请人 |
PHILLIPS PETROLEUM COMPANY |
发明人 |
TREPKA, WILLIAM J.;MOCZYGEMBA, GEORGE A.;FARRAR, RALPH C., JR. |
分类号 |
C08F297/04;C08J5/18;(IPC1-7):C08F297/04 |
主分类号 |
C08F297/04 |
代理机构 |
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地址 |
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