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US 5,490,035 AGranted
Cyanoresin, cyanoresin/cellulose triacetate blends for thin film, dielectric capacitors
AssigneeThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration
InventorsShiao-Ping S. Yen, Carol R. Lewis, Peter J. Cygan, T. Richard Jow
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Abstract
Non brittle dielectric films are formed by blending a cyanoresin such as cyanoethyl, hydroxyethyl cellulose (CRE) with a compatible, more crystalline resin such as cellulose triacetate. The electrical breakdown strength of the blend is increased by orienting the films by uniaxial or biaxial stretching. Blends of high molecular weight CRE with high molecular weight cyanoethyl cellulose (CRC) provide films with high dielectric constants.
Claims8
A capacitor comprising in combination:
- a dielectric layer formed of a blend of a cyanoresin with a compatible second resin having at least 20% crystallinity;
- and
- a metal film adjacent a surface of the layer.
Dependencies are inferred from the claim text.