Water absortive composition

Details Water absortive composition Water absortive composition

C - Chemistry, Metallurgy

08

L

31/80.1

C08L 39/04 (2006.01) A61K 9/20 (2006.01) A61L 15/58 (2006.01) A61L 17/14 (2006.01) A61L 29/08 (2006.01) A61L 29/14 (2006.01) C01B 21/26 (2006.01) C08L 39/06 (2006.01) C08L 45/00 (2006.01) C09J 7/02 (2006.01) C09J 133/06 (2006.01) C09J 139/06 (2006.01)

Patent

CA 1156032

Abstract of the Disclosure A composition capable of absorbing more than 45% of its weight of water without dissolution at room temperature to form a hydrogel is made by blending (1) 40 to 98% by weight of water-soluble poly(vinyl pyrrolidone) with (2) 2 to 60% by weight of a water-insoluble copolymer formed of 50% to 90% by weight based on the total copolymer of a hydrophobic water-insoluble ethylenically unsaturated monomer, 2 to 12% by weight of an ethylenically unsaturated monomer containing an acid group, and 0 to 50% by weight of a hydrophilic ethylenically unsaturated monomer free from acidic groups.

353543

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