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US 12,224,125 B2Granted
Film capacitor
AssigneesShizuki Electric Co., Inc., Murata Manufacturing Co., Ltd.
InventorsSenichi Ozasa, Tomomichi Ichikawa
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Abstract
A film capacitor that includes a dielectric resin film made of a thermosetting urethane resin; and a metal layer on at least one surface of the dielectric resin film, wherein the dielectric resin film contains at least an isocyanate group and a carbonyl group, and a ratio of a first absorption peak intensity of the isocyanate group in a wave number range of 2200 cm−1 to 2350 cm−1 to a second absorption peak intensity of the carbonyl group in a wave number range of 1650 cm−1 to 1800 cm−1 is 0.08 to 1.15.
Claims12
A film capacitor comprising:
- a dielectric resin film made of a thermosetting urethane resin;
- and
- a metal layer on at least one surface of the dielectric resin film,
- wherein the dielectric resin film contains at least an isocyanate group and a carbonyl group, and
- a ratio of a first absorption peak intensity of the isocyanate group in a wave number range of 2200 cm−1 to 2350 cm−1 to a second absorption peak intensity of the carbonyl group in a wave number range of 1650 cm−1 to 1800 cm−1 is 0.08 to 1.15.
2 more elements
Dependencies are inferred from the claim text.