Foley & Lardner LLP
Partial-discharge-resistant insulating varnish, insulated wire and method of making the same
A partial-discharge-resistant insulating varnish has a polyamide-imide enamel varnish and an organo-silica sol that are dispersed in a solvent. The solvent has 50 to 100% by weight of γ-butyrolactone. An insulated wire has a conductor, and a partial-discharge-resistant insulation coating film formed on the surface of the conductor. The partial-discharge-resistant insulation coating film is made of the partial-discharge-resistant insulating varnish.
Hitachi Metals, Ltd.
H C C Y C C C Y H C Y H
H01B C08K C08K Y10T C09D C09D C09D Y10T H01B C09D Y10T H01B
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Yuzo Hideyuki
Yukimori Kikuchi