Patent ID: 6077918
Filing Date: 2000-06-20
Classification: B01D,B01J,C07F,C08G

Abstract:
A phosphonium ionomer which, as random copolymers, is composed of the units ##STR5## where Ar is a phenylene radical or a biphenylene, naphthylene radical, anthrylene or another divalent aromatic radical and may be different units within the polymer chain;X is an --S--, --SO-- and/or --SO.sub.2 -- unit, and optionally may further be an --O-- unit, in addition to said --S--, --SO-- and/or --SO.sub.2 units where --X--, within the polymer chain may be up to 3 different units;Z is a monovalent or polyvalent opposite ion;Ph is a phenyl radical;m is the charge of the opposite ionn is 1 or 2; andthe average degree of polymerization is in the range from 3 to 2000.