METHOD FOR PRODUCING LOW-SPECIFIC-GRAVITY POLYVINYL ALCOHOL-BASED HYDROGEL

摘要

PROBLEM TO BE SOLVED: To obtain a polyvinyl alcohol-based hydrogel which has excellent fluidity in a reaction vessel and becomes a carrier having excellent handleability without being retained at the bottom of the reaction vessel even in a reaction vessel with deep depth.

SOLUTION: The method for producing a low-specific-gravity polyvinyl alcohol-based hydrogel comprises bringing a solution containing a polyvinyl alcohol (a), a water-soluble polysaccharide (b) having ability of gelling by contact with at least one kind of a cation and a polymer compound (c) having≤1 specific gravity into contact with a cation-containing aqueous solution and carrying out insolubilization treatment.

COPYRIGHT: (C)2004,JPO