High-temperature resistant electrically insulating coating powder

摘要

Electrically insulating wire coatings are resistant to prolonged exposure to 200 DEG C. when formed from a powder which, in a preferred composition, is a blend of (a) epoxy-terminated adduct of hydantoin diepoxide and aromatic dicarboxylic acid imide dissolved in hydantoin diepoxide, (b) acid-terminated polyester of aromatic dicarboxylic acid and diphenol containing one aromatic ring pendant from a central carbon atom, (c) bismaleimide, and (d) fumaric acid.