Process for producing a water-absorbent resin

Details Process for producing a water-absorbent resin Process for producing a water-absorbent resin

C - Chemistry, Metallurgy

08

F

402/521

C08F 20/06 (2006.01) A61L 15/00 (2006.01) A61L 15/60 (2006.01) C08F 2/32 (2006.01)

Patent

CA 1282543

ABSTRACT OF THE DISCLOSURE A water-absorbent resin having excellent physical properties can be produced by a process wherein an aqueous solution containing an .alpha.,.beta.-unsaturated carboxylic acid and an alkali metal salt thereof in a total amount of 25% by weight or more is subjected to polymerization with a radical polymerization initiator in a petroleum-based hydrocarbon solvent in the presence or absence of a crosslinking agent, characterized by using, as a surfactant, a polyglycerine - fatty acid ester having an HLB of 2 to 16 and represented by the general formula Image (wherein R is an acyl group or hydrogen atom and n is an integer of 0 to 8).

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