发明名称 |
Block copolymers of polysiloxanes and copolymers of conjugated dienes and aromatic vinyl compounds, and multilayer structures containing same. |
摘要 |
<p>Block copolymers are described which comprise alternating blocks of (A) a polysiloxane; and (B) a copolymer of a 1,3-conjugated diene and a monovinyl aromatic compound. The block copolymers can be prepared by reacting a polysiloxane with a dilithiated copolymer of a conjugated diene and a monovinyl aromatic compound and thereafter neutralizing the reaction product with a protonic acid or a polyfunctional alkyl silane or silicon tetrachloride. Cured elastomer compositions exhibiting surface release characteristics are obtained by curing a mixture comprising the above-described block copolymer in the presence of a curing system comprising a peroxide and sulfur. Multilayer elastomer structures useful in manufacturing articles from elastomeric materials also are described wherein at least a portion of an outer layer of the multilayer elastomer structure has release characteristics and comprises the cured block copolymers of the present invention.</p> |
申请公布号 |
EP0520279(A2) |
申请公布日期 |
1992.12.30 |
申请号 |
EP19920110052 |
申请日期 |
1992.06.15 |
申请人 |
BRIDGESTONE CORPORATION |
发明人 |
HERGENROTHER, WILLIAM L.;GRAVES, DANIEL F. |
分类号 |
B32B27/00;B32B25/10;C08G77/42;C08G77/442;C08K5/14;C08L53/00;C08L53/02;C08L83/04;C08L83/10 |
主分类号 |
B32B27/00 |
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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