发明名称 |
Aqueous insulating varnishes |
摘要 |
An aqueous insulating varnish which comprises an aqueous medium containing dissolved therein a resin containing ester groups, imide groups and free carboxyl groups in the resin molecule, with a volatile base selected from the group consisting of ammonia and a volatile organic amine to render the resin soluble, the resin comprising the reaction product of A. a carboxyl group containing polyol (containing ester groups in the molecule) comprising the reaction product of 1. AN ORGANIC CARBOXYLIC ACID COMPONENT COMPRISING A. ABOUT 15 TO 100 MOL% OF AT LEAST ONE OF AN AROMATIC TRICARBOXYLIC ACID AND THE ANHYDRIDE THEREOF IN WHICH UP TO 30 MOL% OF THE AROMATIC TRICARBOXYLIC ACID AND THE ANHYDRIDE THEREOF CAN BE REPLACED BY AT LEAST ONE OF AN AROMATIC TETRACARBOXYLIC ACID AND THE ANHYDRIDE THEREOF, AND B. ABOUT 0 TO 85 MOL% OF AT LEAST ONE OF A DICARBOXYLIC ACID AND THE ANHYDRIDE THEREOF; AND 2. AN ORGANIC ALCOHOL COMPONENT COMPRISING AT LEAST ONE ORGANIC POLYHYDRIC ALCOHOL; B. butane tetracarboxylic acid and/or an imide-forming derivative thereof; and C. at least one organic diamine.
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申请公布号 |
US4008195(A) |
申请公布日期 |
1977.02.15 |
申请号 |
US19740498020 |
申请日期 |
1974.08.16 |
申请人 |
NITTO ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
ISHIZUKA, TAKASHI;MIWA, NAOKI |
分类号 |
C08G73/00;C08G73/10;C09D5/25;C09D179/08;H01B3/30;(IPC1-7):B32B15/08;C08L79/08 |
主分类号 |
C08G73/00 |
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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