Title:
PLASMA TREATED ELECTRET FILTER MEDIA
Document Type and Number:
WIPO Patent Application WO2001007144
Kind Code:
A2
Abstract:
An electret filter media includes an additive or mixtures thereof that enhance the charge stability of the media. The filter media achieves acceptable alpha values for a range of filtration challenges without significant decay in alpha values over time. Preferred charge additives include fatty acid amides and mixtures thereof.
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Inventors:
GAHAN RICHARD E (US)
Application Number:
PCT/US2000/019279
Publication Date:
February 01, 2001
Filing Date:
July 14, 2000
Export Citation:
Assignee:
HOLLINGSWORTH & VOSE CO (US)
GAHAN RICHARD E (US)
GAHAN RICHARD E (US)
International Classes:
A62B18/08; B01D39/00; B01D39/14; B01D39/16; D06M10/02; (IPC1-7): B01D39/16
Domestic Patent References:
| WO1999016532A1 |
Foreign References:
| US5645627A | ||||
| US4845132A | ||||
| US4407852A |
Other References:
DATABASE WPI Week 198943 Derwent Publications Ltd., London, GB; AN 1989313601 XP002156374 & JP 01 232038 A (KURARAY CO LTD), 18 September 1989 (1989-09-18)
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