Patent ID: 8604134
Filing Date: 2013-12-10
Classification: C08F,D21H

Abstract:
1. A process for preparing a polymer of randomly distributed repeating monomer units having at least two of the formulae (I), (II), (III), (IV), (V), (VI) (VII), (XIII) or (XIV): said polymer optionally further comprising randomly distributed repeating monomer units having at least one of the formulae (VIII), (IX), (X), or (XII): wherein X Y is —C(═O)— or —CH R is H, —COOH, —COOR R R R R R R R R R R k, j, m wherein the sum of m comprising the step of reacting an aqueous solution of vinylamine-containing polymer for a period of time at a reaction temperature with at least two compounds selected from a group consisting of an alkylating agent containing a cationic functional group selected from the group consisting of 3-chloro-2-hydroxypropyltrimethylammonium chloride, 2-(diethylamino)ethyl chloride and combinations thereof; and the other compound is selected from a group containing an amine-reactive functional group wherein the amine reactive functional group is an alkylating or acylating agent that has or generates a carboxylic acid moiety after acylation or alkylation and is selected from the group consisting of succinic anhydride, succinic anhydride substituted with a straight chain or branched alkyl or alkenyl group containing up to 18 carbons, maleic anhydride, glutaric anhydride, 3-methylglutaric anhydride, 2,2-dimethylsuccinic anhydride, cyclic alkyl carboxylic anhydrides, cyclic alkenyl carboxylic anhydrides, alkenyl succinic anhydride (ASA), chloroacetic acid, bromoacetic acid, halogen-substituted alkanic acid acrylamides, halogen-substituted alkenoic acid acrylamides and combinations thereof; an alkyl glycidyl ether selected from the group consisting of butyl glycidyl ether, 2-ethylhexyl glycidyl ether, hexadecyl glycidyl ether, C wherein said vinylamine-containing polymer has a molecular weight in the range of from about 4,000 to about 2,000,000 Daltons.