Polymerisable disulphimide derivatives containing maleic...

Details Polymerisable disulphimide derivatives containing maleic... Polymerisable disulphimide derivatives containing maleic...

C - Chemistry, Metallurgy

08

F

18/27, 402/300,

C08F 220/48 (2006.01) C08F 226/02 (2006.01) B01D 13/00 (1980.01)

Patent

CA 1119749

ABSTRACT OF THE DISCLOSURE A semi-permeable membrane prepared from a copolymer consisting of copolymerized units of (A) 50 to 99% by weight of acrylonitrile, (B) 1 to 50% by weight of at least one monomer of the formula Image where in Ar is a benzene or naphthalene group; R1 to R4 are identical or different and each is H, or lower alkyl; and X is H, Na, K or NH4; and (C) 0 - 30% by weight of at least one other olefinically unsatur- ated monomer which is copolymerisable with acrylonitrile, the sum of the percentage contents of (A) to (C) being in all cases 100. The semi-permiable membrane is useful in reverse osmosis and ultra-filtra- tion techniques for separating substances in aqueous solution under pressure.

358008

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