Minnesota Mining and Manufacturing Company

Curtis R Guilbert

Peter Fialla

Electrically insulating wire coatings are resistant to prolonged exposure to 200.degree. C. when formed from a powder which, in a preferred composition, is a blend of

High-temperature resistant electrically insulating coating powder

A powder composition capable of being fused and cured on electrical wire to provide a thermally stable electrically insulative coating thereon, comprising a blend of a carboxyl-terminated polyester resin, a diimide diacid and a triglycidyl isocyanurate.

High temperature wire coating powder

A carboxy-functional curative for epoxy resins comprising the reaction product of trimellitic anhydride and capped epoxy resins, the capped resins comprising a hydantoin diepoxide or a diglycidol ether of bisphenyl A reacted with benzoic acid or phenyl. The curative is used in conjunction with a thermosettable epoxy resin powder composition useful for applying electrically insulating coatings to electrical wire.

Electrical insulating powder for providing wire coating

Powder useful for applying electrical-insulating coatings to wire, the powder being a blend of (a) polyglycidyl ether capped with monobasic aromatic acid such as benzoic acid and (b) trimellitic anhydride.

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Saint Paul, MN, United States of America

Curtis R Guilbert