Bonding insulation material with half ester of an epoxy resin and unsaturated dicarboxylic acid anhydride composition
Abstract
Abstract COMPOSITIONS OF MONTHS-LONG CATALYZED POT LIFE AT ROOM TEMPERATURE AND HENCE ESPECIALLY SUITABLE FOR COATING LARGE OBJECTS SUCH AS HIGH VOLTAGE COILS, ARE MADE BY MIXING (A) THE PRODUCT OF THE UNCATALYZED HALF-ESTERIFICATION OF EPOXY RESIN WITH AN OLEFINICALLY UNSATURATED DICARBOXYLIC ACID ANHYDRIDE (E.G., MALEIC ANHYDRIED), (B) A COREACTIVE VINYL MONOMER (E.G., STYRENE), (C) A POLYCARBOXYLIC ANHYDRIDE CONTAINING NO OLEFINIC UNSATURATION (E.G., NADIC METHYL ANHYDRIDE (NMA) VISCOUS LIQUID METHYL BICYCLO (2.2.1) HEPTENE-2,3-DICARBOXLIC ANHYDRIDE ISOMERS) AND (D) POLYMERIZATION CATALYSTS AND INHIBITORS. THE LARGE OBJECTS ARE IMPREGNATED WITH LIQUID LOW VISCOSITY COMPOSITIONS. UPON HEATING, THE COMPOSITION CURES TO A THERMOSET RESIN.
Inventors
- 👤 Newton C Foster
Bibliographic Details
Claims Analysis
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