Sumitomo Electric Industries, Limited

Teruyuki Yamamoto

Isao Ueoka

Munetaka Kawaguchi

Masayoshi Miyake

Hirohiko Nakabayashi

An insulated wire comprising a conductor coated and baked thereon with an insulating lacquer, the insulating lacquer comprising (a) 100 parts by weight of a polyamideimide resin having a molecular weight corresponding to a reduced specific viscosity of from 0.1 to 1.0, and (b) 75 to 400 parts by weight of a stabilized polyisocyanate compound derived from diphenylmethane-diisocyanate.

Polyamideimide insulated wire

An enamelled wire comprising a layer of baked insulation formed on the conductor either directly or through another insulation can be produced by applying to at least the outermost layer of the wire a wire enamel composition consisting essentially of a polyester resin at least one molecule of which is terminated with a straight alkyl group having 21 or more carbon atoms, and drying the same.

Enamelled wire

A magnet wire comprising a conductor having thereon an outermost insulating wire enamel layer, either directly or over another insulating layer, said wire enamel consisting essentially of a polyamideimide wherein either one or both ends of at least one polyamideimide molecule is a terminal linear alkyl group having at least 21 carbon atoms. The magnet wire has a high resistance to refrigerant as well as to thermal or mechanical damage and has a high lubricity.

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Osaka, Japan

Teruyuki Yamamoto