Electrical insulation film and condenser

Details Electrical insulation film and condenser Electrical insulation film and condenser

1990-09-28

1992-03-03

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

428220, H01G 101, B32B 516

Patent

active

050937588

ABSTRACT:
An electrical insulating film which comprises a styrene polymer having a syndiotactic configuration and containing not more than 1,000 ppm of residual aluminum derived from the catalyst used in the production of the styrene polymer, and not more than 3,000 ppm of residual styrene monomer, and a condenser comprising metal electrodes and the above film which is 0.5 to 30 .mu.m thick and has crystallinity of not less than 25%, are disclosed.

REFERENCES:
patent: 2887634 (1959-05-01), Peck et al.
patent: 3264536 (1966-08-01), Robinson et al.
patent: 4680353 (1987-07-01), Ishihara et al.
patent: 4748209 (1988-05-01), Orikasa et al.
patent: 4910639 (1990-03-01), Schloegl et al.
patent: 4937133 (1990-06-01), Watanabe et al.
patent: 5017657 (1991-05-01), Fiore et al.
Patent Abstracts of Japan, vol. 13, No. 442 (C-641) (3790) Oct. 4, 1990, & JP-A-01 168709, Syndiotactic Polystyrene Film, 4/7/1989.
Database WPIL, AN-89-169217, Derwent Publications Ltd., London, GB & JP-A-01 110122, 4/26/1989.

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