Coextruded, biaxially oriented, multi-layer and capacitor made t

Details Coextruded, biaxially oriented, multi-layer and capacitor made t Coextruded, biaxially oriented, multi-layer and capacitor made t

1986-11-12

1987-09-08

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

361315, 361323, H01G 404, H01G 422

Patent

active

046928375

ABSTRACT:
The multi-layer film comprises a propylene polymer base layer having a stabilizer content of up to 0.2% by weight and outer layers, also composed of propylene polymer, having a stabilizer content of at least 0.3% by weight. The outer layers contain 3 to 10 times the amount of stabilizer present in the base layer, as a result of which the initial value of the dielectric loss factor tan of the multi-layer film is kept low, and the loss factor exhibits only a slight increase with time.

REFERENCES:
patent: 3363156 (1968-01-01), Cox
patent: 4131931 (1978-12-01), Nishikawa et al.
patent: 4228481 (1980-10-01), DiNicola et al.
patent: 4283453 (1981-08-01), Siefried et al.
patent: 4367511 (1983-01-01), Crass et al.

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