BIAXIALLY ORIENTED FILM FOR ELECTRICAL INSULATION AND FILM CAPACITOR MADE USING BIAXIALLY ORIENTED FILM FOR ELECTRICAL INSULATION
First Claim
1. A biaxially oriented film for electrical insulation comprising a substrate layer containing a polyester as a main component,the film being characterized in that the substrate layer contains a phenolic stabilizer in an amount of 0.001 wt % or more and 3 wt % or less based on the weight of the substrate layer, and the phenolic stabilizer is an alkylenebisamide-type hindered phenol.
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Abstract
Disclosed is a biaxially oriented film for electrical insulation having even better withstand voltage characteristics than before together with excellent film-forming properties. The biaxially oriented film for electrical insulation of the invention is a film that includes a substrate layer containing a crystalline thermoplastic resin as a main component. The substrate layer contains a phenolic stabilizer in an amount of 0.001 wt % or more and 3 wt % or less based on the weight of the substrate layer. The phenolic stabilizer is an alkylenebisamide-type hindered phenol.
40 Citations
23 Claims
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1. A biaxially oriented film for electrical insulation comprising a substrate layer containing a polyester as a main component,
the film being characterized in that the substrate layer contains a phenolic stabilizer in an amount of 0.001 wt % or more and 3 wt % or less based on the weight of the substrate layer, and the phenolic stabilizer is an alkylenebisamide-type hindered phenol.
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4. (canceled)
Specification