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Machine translation
1. (WO1992004109) GAS SEPARATION MEMBRANE WITH ULTRATHIN LAYER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1992/004109    International Application No.:    PCT/US1991/005557
Publication Date: 19.03.1992 International Filing Date: 13.08.1991
Chapter 2 Demand Filed:    24.02.1992    
IPC:
B01D 67/00 (2006.01), B01D 69/12 (2006.01)
Applicants: E.I. DU PONT DE NEMOURS AND COMPANY [US/US]; 1007 Market Street, Wilmington, DE 19898 (US)
Inventors: GOCHANOUR, Craig, Robert; (US)
Agent: SIEGELL, Barbara, C.; E.I. du Pont de Nemours and Company, Legal/Patent Records Center, 1007 Market Street, Wilmington, DE 19898 (US)
Priority Data:
575,266 30.08.1990 US
Title (EN) GAS SEPARATION MEMBRANE WITH ULTRATHIN LAYER
(FR) MEMBRANE DE SEPARATION DE GAZ COMPORTANT UNE COUCHE ULTRAMINCE
Abstract: front page image
(EN)This invention is a gas separation membrane containing two polymer layers, a relatively thick layer, and an ultrathin layer, 10 to about 200 A thick. The ultrathin layer polymer is more selective than the polymer used in the thick layer. Also provided is a process for making such membranes.
(FR)Membrane de séparation de gaz contenant deux couches polymères, une couche relativement épaisse, et une couche ultramince, d'une épaisseur de 10 à environ 200 A. La couche polymère ultramince est plus sélective que le polymère utilisé dans la couche épaisse. On décrit aussi un procédé pour fabriquer de telles membranes.
Designated States: AU, BB, BG, BR, CA, CS, FI, HU, JP, KP, KR, LK, MC, MG, MN, MW, NO, PL, RO, SD, SU.
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)