Process for sulfoethylation of high molecular weight...

Details Process for sulfoethylation of high molecular weight... Process for sulfoethylation of high molecular weight...

C - Chemistry, Metallurgy

08

F

402/325

C08F 8/34 (2006.01) C08F 20/56 (2006.01)

Patent

CA 1337138

Improved methods of sulfoethylation of high molecular weight polysoap acrylamide containing polymers to produce sulfoethylated acrylamide polymers in water-in-oil latex form having reduced specific viscosities (RSV's) above about 18. Thus the invention relates to an improved process for sulfoethylation of acrylamide containing polysoap polymer latices to produce stable sulfoethylated latex polymers with a Reduced Specific Viscosity (RSV) greater than the starting polymers which comprises reacting a polysoap latex of an acrylamide containing polymer having a molecular weight of at least about one million with taurine or its salts at an elevated superatmospheric pressure and at temperatures above about 120°C in a reaction mixture containing from about 45 to 90% water for a period of from about 0.5 to about 6 hours, the resulting polymer having an RSV of at lest 18.

580413

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