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Machine translation
1. (WO1990008801) HIGHLY AIR PERMEABLE EXPANDED POLYTETRAFLUOROETHYLENE MEMBRANES AND PROCESS FOR MAKING THEM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1990/008801    International Application No.:    PCT/US1990/000498
Publication Date: 09.08.1990 International Filing Date: 24.01.1990
IPC:
B01D 39/16 (2006.01), B01D 67/00 (2006.01), B01D 71/36 (2006.01), B29C 55/00 (2006.01), C08J 5/18 (2006.01)
Applicants: W.L. GORE & ASSOCIATES, INC. [US/US]; 551 Paper Mill Road, P.O. Box 9206, Newark, DE 19714 (US)
Inventors: BACINO, John, E.; (US)
Agent: SAMUELS, Gary, A.; W. L. Gore & Associates, Inc., 551 Paper Mill Road, P.O. Box 9206, Newark, DE 19714 (US)
Priority Data:
305,839 02.02.1989 US
Title (EN) HIGHLY AIR PERMEABLE EXPANDED POLYTETRAFLUOROETHYLENE MEMBRANES AND PROCESS FOR MAKING THEM
(FR) MEMBRANES EN POLYTETRAFLUOROETHYLENE EXPANSE HAUTEMENT PERMEABLE A L'AIR ET LEUR PROCEDE DE FABRICATION
Abstract: front page image
(EN)A thin, low density porous polytetrafluoroethylene membrane having very large pores (5) and heretofore unknown high air permeabilities is described. The membrane is produced by a particular series of longitudinal and transverse stretching steps carried out under particular conditions.
(FR)On a mis au point une membrane en polytétrafluoroéthylène fine, poreuse et de faible densité, présentant des pores (5) très grands, et des perméabilités à l'air élevées inconnues à ce jour. On produit la membrane en une série particulière d'étapes d'étirage longitudinal et transversal exécutées dans des conditions particulières.
Designated States: AU, CA, JP.
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, IT, LU, NL, SE).
Publication Language: English (EN)
Filing Language: English (EN)