Film electret and an electret filter

Details Film electret and an electret filter Film electret and an electret filter

1991-03-12

1993-10-26

Chiesa, Richard L.

Gas separation

Specific media material

Fibrous or strand form

55DIG5, 55DIG39, 204165, 204168, 264 22, 264DIG8, 264DIG48, 307400, 369144, 381191, B01D 3916, B01D 5332

Patent

active

052561763

ABSTRACT:
A film electret and an electret filter that contain a polar high-molecular weight compound and that provides a TSDC curve having a homocharge peak temperature of at least 95.degree. C. and a heterocharge peak temperature of at least 80.degree. C.

REFERENCES:
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patent: 3574790 (1971-04-01), Young et al.
patent: 3660736 (1972-05-01), Igarashi et al.
patent: 3793715 (1974-02-01), Murayama et al.
patent: 3924324 (1975-12-01), Kodera
patent: 4178157 (1979-12-01), Turnhout et al.
patent: 4375718 (1983-03-01), Wadsworth et al.
patent: 4513049 (1985-04-01), Yamasaki et al.
patent: 4789504 (1988-12-01), Ohmori et al.
patent: 4874399 (1989-10-01), Reed et al.
patent: 4874659 (1989-10-01), Ando et al.
patent: 5057710 (1991-10-01), Nishiura et al.
Patent Abstracts of Japan vol. 13, No. 408 (C-634)(3756) Sep. 8, 1989 & JP-A-1 148 320 (Toyobo Co Ltd) Jun. 9, 1989.

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