Daikin Industries, Ltd.

Miharu Ota

Meiten Koh

Eri Mukai

Kouji Yokotani

Nobuyuki Komatsu

Mayuko Tatemichi

The present invention provides a high dielectric film for a film capacitor obtained by molding a film forming composition for a film capacitor comprising a thermoplastic resin (A) and surface-treated high dielectric inorganic particles (B) obtained by treating the surfaces of high dielectric inorganic particles (b1) having a dielectric constant (20&#xb0; C., 1 kHz) of 100 or more with a low dielectric compound (b2) having a dielectric constant (20&#xb0; C., 1 kHz) of 10 or less. This high dielectric film for a film capacitor can restrain the decrease of electrical insulating property, in spite of the high dielectric inorganic particles being dispersed at a high filling rate.

Composition for forming high dielectric film for film capacitor

There is provided a thin highly dielectric film for a film capacitor being excellent in mechanical strength, in which highly dielectric inorganic particles can be blended to a dielectric resin at high ratio, and rubber particles (B) and preferably highly dielectric inorganic particles (C) are dispersed in a thermoplastic resin (A).

Film for film capacitor and film capacitor

The present invention provides a nonporous highly dielectric film which can improve withstanding voltage, insulating property and dielectric constant, especially can decrease a dielectric loss at high temperatures and can be made thin, and a coating composition for forming the highly dielectric film comprising (A) a vinylidene fluoride resin, (B) a cellulose resin and (C) a solvent.

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Settsu, Japan

Miharu Ota