C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 2/18 (2006.01) C08F 220/34 (2006.01) C08F 220/60 (2006.01) C08L 33/14 (2006.01) C08L 33/26 (2006.01)
Patent
CA 2137637
The present invention is particularly useful in preparing a water soluble polymer dispersion. According to one preferred embodiment of the invention, the dispersion is prepared by polymerizing a water soluble mixture of from about 15 to about 30% percent by weight of a cationic monomer represented by the following general formula (I): Image (I) where R1 is either hydrogen or CH3; R2 and R3 are each an alkyl group having 1 to 3 carbon atoms; A1 is either an oxygen atom or NH; B1 is either an alkylene group having 2 to 4 carbon atoms or a hydroxypropylene group, and X1 is an anionic counterion, and/or a second cationic monomer represented by the following general formula (II): Image (II) where R4 is either hydrogen or CH3; R5 and R6 are each an alkyl group having 1 to 2 carbon atoms; R7 is a hydrogen atom or an alkyl group having 1 to 2 carbon atoms; A2 is either an oxygen atom or NH; B2 is either an alkylene group having 2 to 4 carbon atoms or a hydroxypropylene group and X2- is an anionic counterion; and (meth)acrylamide in an aqueous solution of from 17 to about 19 percent by weight of a polyvalent anionic salt.
Ramesh Manian
Werges Darrell L.
Nalco Chemical Company
Smart & Biggar
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