Process for preparing graft copolymer membranes

Details Process for preparing graft copolymer membranes Process for preparing graft copolymer membranes

C - Chemistry, Metallurgy

08

F

C08F 291/18 (2006.01) B01D 67/00 (2006.01) B01D 71/28 (2006.01) C08F 255/02 (2006.01) C08F 259/00 (2006.01) C08F 259/08 (2006.01) C08J 5/22 (2006.01) C08J 7/18 (2006.01)

Patent

CA 2458630

A process for preparing a graft copolymer membrane is provided comprising exposing a porous polymeric base film to a dose of ionizing radiation, and then contacting the irradiated base film with an emulsion comprising a fluorostyrenic or fluoronaphthyl monomer. The graft copolymer membrane may be densified to render it substantially gas-impermeable.

Cette invention concerne un procédé de préparation d'une membrane de copolymère greffé, qui consiste à exposer un film polymère poreux de base à une dose de rayonnement ionisant, puis à mettre le film de base irradié en contact avec une émulsion renfermant un monomère de fluorostyrène ou de fluoronaphtyle. On peut densifier la membrane de copolymère greffé afin de la rendre sensiblement imperméable aux gaz.

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