发明名称 |
Dissimilar arm asymmetric radial or star block copolymers for adhesive and sealants. |
摘要 |
<p>A radial or star asymmetric block copolymer of the formula (I) is new. (A-HD)x-Y-(UD)z (I). A = vinyl aromatic hydrocarbon block having a peak Mw of 4000-20000; HD = hydrogenated conjugated diene block having a peak Mw of 10000-100000; Y = multifunctional coupling agent; UD = unhydrogenated conjugated diene block having a peak Mw of 1000-80000; x = 2-20; z = 1-10; and x+z = 3-30. The block copolymer has a vinyl aromatic hydrocarbon content of 4-35 wt.%. Also claimed are (i) an adhesive or sealant compsn. comprising the copolymer and a tackifying resin; and (ii) compsns. which are crosslinked.</p> |
申请公布号 |
EP0653449(A1) |
申请公布日期 |
1995.05.17 |
申请号 |
EP19940203215 |
申请日期 |
1994.11.04 |
申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. |
发明人 |
CHIN, STEVEN SOOHYUN;HIMES, GLENN ROY;HOXMEIER, RONALD JAMES;SPENCE, BRIDGET ANN |
分类号 |
C08F8/00;C08F8/04;C08F8/08;C08F8/46;C08F297/04;C08L53/02;C09J153/02;(IPC1-7):C08F297/04;C09J151/00;C08G81/02 |
主分类号 |
C08F8/00 |
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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