STABILIZATION OF DILUTE AQUEOUS SOLUTIONS OF HIGH MOLECULAR WEIGHT HOMOPOLYMERS AND COPOLYMERS BASED ON WATER-SOLUBLE ETHYLENICALLY UNSATURATED COMPOUNDS

摘要

Abstract of the Disclosure: Dilute aqueous solutions ofhigh molecular weight polymers of acrylamide or methacryl-amide or of homopolymers or copolymers of salts of ethylen-ically unsaturated C3-C5-carboxylic acids are stabi-lized to thermal degradation by adding (a) at least 20 ppmof an inorganic sulfur compound, in which the sulfur hasan oxidation number of +2 to +5, and (b) at least 20 ppmof a complexing agent for metal ions.