发明名称 |
Method of producing naphthol-modified phenolic resin. |
摘要 |
<p>A copolycondensation of a phenol, a naphthol and formaldehyde proceeds smoothly in the presence of an acid and a metallic element selected from the group consisting of transition metallic elements and metallic elements of Group IIa, Group IIIa, Group IVa, Group Va and Group VIa of the Periodic Table, and a naphthol-modified phenolic resin which has a large molecular weight and does not gel is obtained.</p> |
申请公布号 |
EP0512519(A2) |
申请公布日期 |
1992.11.11 |
申请号 |
EP19920107658 |
申请日期 |
1992.05.06 |
申请人 |
HITACHI CHEMICAL CO., LTD. |
发明人 |
SUE, HARUAKI;NANAUMI, KEN;ITOU, TAKUJI;MADARAME, KEN;HAGIWARA, SHINSUKE |
分类号 |
C08G8/08 |
主分类号 |
C08G8/08 |
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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