B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 67/00 (2006.01) B01D 69/12 (2006.01) B01D 71/40 (2006.01)
Patent
CA 2169555
A process is disclosed for the formation of a composite membrane having a discriminating layer affixed to a porous support layer. The process comprises the formation of the discriminating layer by irradiating an aqueous polymer solution containing from 0.01 to 30 weight percent polymer under conditions which are sufficient to form a polymer film on the surface of the polymer solution at the interphase of the solution and a blanketing fluid. A preferred polymer is a hydroxyethylmethacrylate/vinylbenzyldimethyl sulfonium/methacrylic acid terpolymer.
La présente invention se rapporte à la formation d'une membrane composite présentant une couche de séparation fixée à une couche support poreuse. Le procédé consiste à former cette couche de séparation en irradiant une solution polymère aqueuse contenant 0,01 à 30 % en poids d'un polymère dans des conditions suffisantes pour former un film polymère sur la surface de la solution polymère à l'interphase de la solution et d'un fluide de couverture. Un polymère préféré est un terpolymère hydroxyéthylméthacrylate/vinylbenzyldiméthyle sulfonium/acide méthacrylique.
Fibiger Richard F.
Forgach David J.
Glugla Paul G.
Harris J. Keith
Schmidt Donald L.
Smart & Biggar
The Dow Chemical Company
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