HIGH PERFORMANCE FLOCCULATING AGENTS AND VISCOSIFIERS BASED ON HYDROLYSED GRAFTED AMYLOPECTIN AND POLYACRYLAMIDE GRAFTED CARBOXYMETHYL CELLULOSE

摘要

The invention relates to a process for the preparation of hydrolysed graft copolymers comprising preparing a solution of polysaccharide selected from carboxy-methylcellulose and amylopectin and adding acrylamide monomer thereto with stirring, followed by addition of a catalyst solution thereto and allowing the reaction to continue, to obtain the graft copolymers, followed by subjecting the graft copolymer to alkaline hydrolysis to obtain the hydrolysed graft copolymer. This invention further relates to hydrolyzed grafted copolymers for use as flocculants, viscosifiers and drag reducers.