发明名称 |
Method of producing high molecular weight epoxy resin. |
摘要 |
<p>Ultra high molecular weight epoxy resins are produced in a short time by polymerizing a difunctional epoxy resin having two epoxy group per molecule and a dihydric phenol by heating the difunctional epoxy resin and the dihydric phenol which are present in quantities which provide a ratio of phenolic hydroxyl groups to epoxy groups of from 1:0.9 to 1:1.1, in an amide solvent, in the presence of a polymerization catalyst, and the ultra high molecular weight epoxy resins are linearly polymerized so highly as to have the capability of being formed into films having high strength.</p> |
申请公布号 |
EP0475359(A2) |
申请公布日期 |
1992.03.18 |
申请号 |
EP19910115289 |
申请日期 |
1991.09.10 |
申请人 |
HITACHI CHEMICAL CO., LTD. |
发明人 |
SHIBATA, KATSUJI;KOBAYASHI, KAZUHITO;TAKANO, NOZOMU;ARAI, MASAMI;HOSHI, IKUO |
分类号 |
C08G59/06;C08G59/62;C08G59/68;C08J3/09 |
主分类号 |
C08G59/06 |
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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