METHOD OF PREPARING HYDROLYZED POLYACRYLAMIDE FOR GEL-FORMING COMPOSITIONS Russian patent published in 2001 - IPC

FIELD: chemistry of polymer. SUBSTANCE: method comprises preparing reaction mixture containing aqueous solution of acrylamide and alkali metal salts of carbonic acid, deoxidizing, polymerizing acryl amide with combined hydrolysis when heating said reaction mixture using radical type initiators. Prior to deoxidation, prepared reaction mixture is maintained at 25-40 C for 2-4 h. Method makes it possible to prepare composition having gel formation time of 30-60 min. EFFECT: more efficient preparation method. 4 ex, 1 tbl