Patent ID: 6433026
Filing Date: 2002-08-13
Classification: A61K,A61P,C08F,C08L

Abstract:
The salt of an alkylated and crosslinked polymer comprising the reaction product of:(a) one or more crosslinked polymers, or salts and copolymers thereof having a repeat unit selected from the group consisting of: and(NRâ€”CH2CH2â€”NRâ€”CH2CH2â€”NRâ€”CH2CHOHâ€”CH2)n where n is a positive integer and each R, independently, is H or a C1-C8 alkyl group;(b) at least one aliphatic alkylating agent, said reaction product characterized in that: (i) at least some of the nitrogen atoms in said repeat units unreacted with said alkylating agent; (ii) less than 10 mol % of the nitrogen atoms in said repeat units reacting with said alkylating agent forming quaternary ammonium units; and (iii) a fixed positive charge and one or more counterions.