Patent ID: 7396874
Filing Date: 2008-07-08
Classification: C08F,C08L,D21H,Y10S

Abstract:
1. A copolymer composition comprising: at least one associative inverse emulsion copolymer, wherein said at least one associative inverse emulsion copolymer has associative properties provided by at least one emulsification surfactant that is solely a triblock polymeric surfactant in which the surfactant to monomer ratio is at least 3:100 wherein said at least one associative inverse emulsion copolymer consists only of: at least one nonionic polymer segment B consisting only of one or more ethylenically unsaturated nonionic monomers, and at least one cationic polymer segment C consisting only of one or more ethylenically unsaturated cationic monomers; the molar % ratio of B:C is from 99:1 to 1:99; and wherein said at least one associative inverse emulsion copolymer has a Huggins' constant (k′) determined in 0.01 M NaCl greater than 0.5; and said at least one associative inverse emulsion copolymer has a storage modulus (G′) in a 3.0 wt % actives polymer solution at 6.3 Hz greater than 50 Pa.