Process for producing high molecular weight acrylamide water-sol

Details Process for producing high molecular weight acrylamide water-sol Process for producing high molecular weight acrylamide water-sol

1975-01-16

1976-07-13

Schofer, Joseph L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

210 54, 526 81, 526202, 526204, 526208, 526217, 526303, 526317, C08F 2800, C08G 7500, C08F12052, B01D 2101

Patent

active

039693295

ABSTRACT:
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.degree.C but of lower than 25.degree.C in the presence of polyvinyl alcohol and a catalyst, the concentration of the monomer in the polymerization 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 polymerization 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.

REFERENCES:
patent: 2289540 (1942-07-01), Dittmar et al.
patent: 2741652 (1956-04-01), Miller
patent: 3200098 (1965-08-01), Goren
patent: 3336269 (1967-08-01), Monagle et al.
patent: 3336270 (1967-08-01), Monagle
patent: 3509113 (1970-04-01), Monagle et al.
patent: 3617573 (1971-11-01), Monagle
patent: 3681215 (1972-08-01), Peterson

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