Water soluble graft copolymers and methods of use thereof

Details Water soluble graft copolymers and methods of use thereof Water soluble graft copolymers and methods of use thereof

D - Textiles, Paper

21

H

D21H 17/45 (2006.01)

Patent

CA 2127011

5 A water soluble graft copolymer useful as retention and drainage aids in papermaking processes having the structure: Image wherein E is the repeat unit obtained after polymerization of and, .beta. ethylenically unsaturated compound, the molar percentage of a:b is from about 95:5 to 5:95, with the proviso that the sum of a and b equals 100%; G comprises the structure: Image wherein d is a cationic monomer, R1, R2 and R3 are the same or different and are hydrogen or a lower alkyl group having C1 to C3, F is the salt of an ammonium ration, and the molar percentage c:d is from 95:5 to 5:95, with the proviso that the sum of c and d equals 100%. The graft copoly- mer may also be utilized in conjunction with bentonite clay.

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