Kureha Kagaku Kogyo Kabushiki Kaisha

Toshishige Ueno

Akira Ito

Takayuki Yagitani

Hiromasa Matsui

Disclosed herein are an impregnating oil prepared by admixing an isocyanate compound of tolylene diisocyanate and/or 4,4-diisocyanate-3,3-dimethyldiphenyl with an insulating oil of 1-tolyl-2-phenylethane, 1-ethylphenyl-2-phenylethane, 1-isopropylphenyl-2-phenylethane and/or 1,2-ditolylethane and a capacitor comprising two metallized plastic films impregnated with the thus prepared impregnating oil.

Impregnating oil for a capacitor comprising two metallized plastic films

Disclosed herein is a capacitor comprising a metallized polypropylene film impregnated with a specified impregnating oil, i.e., a 1,2-bis(alkylphenyl)ethane, the thus prepared capacitor being suitable for use under a high voltage and a high potential gradient.

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Iwaki, Japan

Toshishige Ueno