Process for producing water-soluble polymers

Details Process for producing water-soluble polymers Process for producing water-soluble polymers

C - Chemistry, Metallurgy

08

F

402/322, 402/372

C08F 20/56 (2006.01) C02F 1/54 (2006.01) C02F 9/00 (2006.01) C08F 2/10 (2006.01)

Patent

CA 1038986

Abstract of the Disclosure: Water-soluble high molecular weight polymers, useful as coagulating agents, are prepared by initiating the polymerization of acrylamide or a monovinyl monomer mixture containing a predominant amount of acrylamide in an acetone- water mixture at a temperature of not lower than 5°C but of lower than 25°C in the presence of polyvinyl alcohol and a catalyst, the concentration of the monomer in the poly- merization reaction mixture being 15 to 30 % by weight and the concentration of acetone in the acetone-water mixture being 15 to 35 % by weight, and continuing the polymeri- zation reaction while controlling the viscosity of the reaction system by adding a water-miscible organic solvent having a small chain transfer coefficient to the reaction system with the progress of the polymerization reaction. - 1 -

217791

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