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US 3,983,289 AGranted
Electrically insulating prepreg
AssigneesMitsubishi Chemical Industries Limited, Mitsubishi Denki Kabushiki Kaisha
InventorsSyunichiro Nishizaki, Hiroshi Teratani, Osamu Fujisawa, Jiro Fukushima, Makoto Tokizawa, Nobukatsu Wakabayashi, Takashi Saito
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Abstract
An electrically insulating prepreg which comprises a resin composition of an alicyclic epoxy compound prepared by the expoxidation of an alkadiene alcohol ester of an alicyclic polybasic carboxylic acid, a latent curing agent, and a solid substrate, wherein said resin composition, once it has been applied to the substrate, is in the B-stage cured state and is thereby acetone soluble, thermoplastic and nontacky.
Claims10
An electrically insulating prepreg, which comprises:
- a resin composition of an alicyclic epoxy compound prepared by the epoxidation of an alkadiene alcohol ester of an alicyclic polybasic carboxylic acid, wherein said alkadiene alcohol is 2,7-octadienol-1 or 1,7-octadienol-3, a latent curing agent of a Lewis acid amine complex, and a fibrous solid substrate or sheet like solid substrate, wherein said resin composition once it has been applied to said substrate is in the B-stage cured condition and is thereby acetone soluble, thermoplastic and non-tacky.
Dependencies are inferred from the claim text.