Patent ID: 6099621
Filing Date: 2000-08-08
Classification: B01D,C08K,Y02C,Y02P

Abstract:
A membrane formed from a composition comprising:(a) a polyamine or its polymer blend,(b) at least one salt of an aminoacid, the salt of the aminoacid being present in an amount ranging from about 10 to about 80 wt % based on the total weight of the composition, wherein the aminoacid salt is selected from salts having the formulae: ##STR3## wherein R.sub.1, R.sub.2 and R.sub.3 are hydrogen or alkyl groups having from 1 to 4 carbon atoms, n is an integer ranging from 0 to 4, A.sup.m+ is a cation having a valence of 1 to 3 and selected from metals of Groups IA, IIA, and IIIA of the Periodic Table of Elements and an amine cation having the formula: ##STR4## wherein R.sub.4 and R.sub.5 are hydrogen or alkyl groups having from 1 to 4 carbon atoms, R.sub.6 is hydrogen, an alkyl group of from 1 to 4 carbon atoms or an alkyl amine of from 2 to 6 carbon atoms and 1 to 4 nitrogen atoms, y is an integer ranging from 1 to 4, and m is an integer equal to the valence of the cation, and(c) about 1 to about 20 wt % of cross-linking agent based on the total weight of composition.