Patent ID: 6133368
Filing Date: 2000-10-17
Classification: C08F

Abstract:
A dispersant system used in forming polymer dispersions consisting of an aqueous solution of:a. a first dispersant polymer which is a copolymer of diallyldimethylammonium chloride and a second monomer selected from the group consisting of: dimethylaminoethylacrylate benzyl chloride quaternary, dimethylaminoethylacrylate cetyl chloride guaternary, dimethylaminoethylmethacrylate benzyl chloride quaternary, dimethylaminoethylmethacrylate cetyl chloride quaternary and ethyl hexyl acrylate; and,b. a second dispersant polymer which is a water soluble cationic polymer composed of at least 20 mole percent of cationic monomer units of formula: ##STR8## where R.sub.4 is hydrogen or CH.sub.3 ; R.sub.5 and R.sub.6 are each an alkyl group having 1 to 2 carbon atoms; R.sub.7 is hydrogen or an alkyl group having 1 to 2 carbon atoms; A.sub.2 is an oxygen atom or NH; B.sub.2 is an alkylene group having 2 to 4 carbon atoms or a hydroxypropylene group and X.sub.2.sup.- is an anionic counterion.