发明名称 |
BLOCK COPOLYMER COMPOSITION, PROCESS FOR PRODUCING THE SAME, AND PRESSURE-SENSITIVE ADHESIVE COMPOSITION |
摘要 |
<p>The present invention provides a composition which comprises a radial poly(aromatic vinyl)/polyisoprene block copolymer as a major component and which can be used as a more excellent pressure-sensitive ingredient. This composition is obtained by reacting a diblock polymer with a coupling agent having a functionality of 4 or higher in the presence of a coupling accelerator, and it contains (a) 1 to 34% by weight of a diblock polymer, (b) 34 to 99% by weight of a four-branch polymer, and (c) 0 to 50% by weight of a two-branch polymer and/or a three-branch polymer. The poly(aromatic vinyl)/polyisoprene block copolymer contained in the composition has a weight-average molecular weight (Mw) of 260,000 to 500,000, and the poly(aromatic vinyl)/polyisoprene block copolymer has a poly(aromatic vinyl) block content of 5 to 24% by weight.</p> |
申请公布号 |
EP1103577(A1) |
申请公布日期 |
2001.05.30 |
申请号 |
EP19990919553 |
申请日期 |
1999.05.13 |
申请人 |
ZEON CORPORATION |
发明人 |
KOMATSUZAKI, SHIGERU;MATSUBARA, TETSUAKI;ISHIHARA, JUN |
分类号 |
C09D153/02;C08F297/04;C08L53/02;C09J153/02;C09J201/00;(IPC1-7):C08L53/02 |
主分类号 |
C09D153/02 |
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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