abstract |
PURPOSE: An insoluble hydrogel with reversible water absorbability and hygroscopicity, comprising polyacrylic acid or an acrylic acid copolymer and Al. n CONSTITUTION: Al is added to an aq. soln. of polyacrylic acid or an acrylic acid copolymer such as an acrylic acid-methyl acrylate copolymer, to form a hydrogel. n EFFECT: A hydrogel excellent in salt resistance, toughness, adhesion and water absorbability is obtd. n USE: Water-absorbing and hygroscopic agent, water-sustaining agent, temp. adjuster, film-formable coating agent, etc. n COPYRIGHT: (C)1982,JPO&Japio |