04734478 is referenced by 218 patents and cites 10 patents.

The invention provides [I] a water-absorbing agent composed of a water-absorbing resin powder having the molecular chains near its surface being crosslinked, said powder being obtained by mixing 100 parts by weight of a powder of a carboxyl-containing water-absorbing resin selected from the group consisting of a hydrolyzate of a starch-acrylonitrile graft polymer, a partially neutralized product of a starch-acrylic acid graft polymer, a saponification product of a vinyl acetate-acrylic ester copolymer, a hydrolyzate of an acrylonitrile copolymer, a crosslinked product of a hydrolyzate of an acrylonitrile copolymer, a hydrolyzate of an acrylamide copolymer, a crosslinked product of a hydrolyzate of an acrylamide copolymer, a partially neutralized product of polyacrylic acid, and a crosslinked product of partially neutralized polyacrylic acid with 0.001 to 10 parts by weight of a polyhydric alcohol, 0.01 to 8 parts by weight of a hydrophilic organic solvent and 0 to 8 parts by weight of water, and heating the mixture at a temperature of at least 90.degree. C. to react the water-absorbing resin powder with the polyhydric alcohol; [II] a water-absorbing agent composed of a mixture of the water-absorbing agent [I] with finely divided silica; [III] a water-absorbing agent obtained by pulverizing and granulating a mixture of the water-absorbing agent [I] with an aqueous liquid; and [IV] a water-absorbing agent composed of a mixture of the water-absorbing agent [III] with finely divided silica.

Title
Water absorbing agent
Application Number
6/748820
Publication Number
4734478
Application Date
June 26, 1985
Publication Date
March 29, 1988
Inventor
Takumi Hatsuda
Suita
JP
Kazumasa Kimura
Osaka
JP
Yoshihiko Masuda
Suita
JP
Yoshio Irie
Nishinomiya
JP
Tadao Shimomura
Toyonaka
JP
Tsuneo Tsubakimoto
Toyonaka
JP
Agent
Sherman and Shalloway
Assignee
Nippon Shokubai Kagaku Kogyo
JP
IPC
B01J 20/26
C08J 3/24
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