发明名称 |
Process for preparation of resin composition useful for laminated sheet |
摘要 |
Process for the preparation of a resin composition which comprises reacting a polybutadiene having a number average molecular weight of 150 to 10,000 and 1,4-structure of at least 80% by weight with a phenol in the presence of an acid catalyst to obtain a composition which consists of a polybutadiene-phenol adduct and unreacted phenol, in said polybutadiene-phenol adduct, one molecule of phenol per 3 to 8 butadiene units being added to the polybutadiene, and reacting the polybutadiene-phenol adduct composition with a formaldehyde in the presence of a basic catalyst. Said resin composition thus prepared is useful for the preparation of a laminated sheet having excellent curing characteristics, particularly excellent electrical characteristics, punchability and flexibility.
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申请公布号 |
US4259395(A) |
申请公布日期 |
1981.03.31 |
申请号 |
US19790047700 |
申请日期 |
1979.06.12 |
申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED |
发明人 |
YASUI, SEIMEI;MATSUDA, YOSHINOBU;SAGOU, MASAKAZU;NOGUCHI, TAKANOBU |
分类号 |
B32B25/02;C08C19/00;C08G8/38;C08G61/02;C08L61/14;(IPC1-7):C08G8/04 |
主分类号 |
B32B25/02 |
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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