| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for generating no massive gel itself when aqueous polymerization is applied in the production of a water absorbing resin, and also to provide a method for calmly controlling the polymerization to stably produce the resin when reverse phase suspension polymerization or standing polymerization is applied. SOLUTION: In the production method of the water absorbing resin comprising a polymerization process of subjecting an aqueous solution of water-soluble unsaturated monomers comprising an acrylic acid (salt) to perform crosslinking polymerization, and simultaneously subdividing obtained water-containing gel, in the production method of the water absorbing resin comprising a process of subjecting an aqueous solution of water-soluble unsaturated monomers comprising an acrylic acid (salt) to perform crosslinking polymerization, and a process of subdividing an obtained water-containing gel, and in the production method of the water absorbing resin comprising a polymerization process of subjecting an aqueous solution of water-soluble unsaturated monomers comprising an acrylic acid (salt) to perform crosslinking polymerization, and simultaneously obtaining a subdivided water gel, the water-soluble unsaturated monomers are designed to contain furfural of 11-1,000 mass ppm (to the monomers). COPYRIGHT: (C)2003,JPO
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