PRODUCTION METHOD FOR WATER ABSORBENT RESIN

WIPO Patent Application WO/2012/014747

A1

Disclosed is a method for producing a water absorbent resin, wherein said method produces the water absorbent resin by means of a reversed-phase suspension polymerisation method and wherein odours originating from raw material components, particularly petroleum hydrocarbon dispersion mediums, have been reduced. Also disclosed is the water absorbent resin obtained by means of the method. Specifically, the disclosed method carries out reversed-phase suspension polymerisation on water soluble ethyleny unsaturated monomers in a petroleum hydrocarbon dispersion medium and using a surfactant. By dispersing a water soluble ethyleny unsaturated monomer solution into the dispersion medium at a prescribed insertion speed the method produces a water absorbent resin wherein odours have been reduced. Also disclosed is the water absorbent resin obtained by means of the disclosed method.

YOKOYAMA, Hideki (1, Irifune-cho, Shikama-ku, Himeji-sh, Hyogo 76, 〒6728076, JP)
横山　秀樹 (〒76 兵庫県姫路市飾磨区入船町１番地　住友精化株式会社内 Hyogo, 〒6728076, JP)
KIKUNO, Sachi (4025-E-1, Mikkaichi Kurobe-sh, Toyama 31, 〒9380031, JP)
菊野　佐知 (〒31 富山県黒部市三日市４０２５－Ｅ－１ Toyama, 〒9380031, JP)

JP2011/066453

February 02, 2012

July 20, 2011

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SUMITOMO SEIKA CHEMICALS CO., LTD. (346-1, Miyanishi Harima-cho, Kako-gu, Hyogo 45, 〒6750145, JP)
住友精化株式会社 (〒45 兵庫県加古郡播磨町宮西３４６番地の１ Hyogo, 〒6750145, JP)
YOKOYAMA, Hideki (1, Irifune-cho, Shikama-ku, Himeji-sh, Hyogo 76, 〒6728076, JP)
横山　秀樹 (〒76 兵庫県姫路市飾磨区入船町１番地　住友精化株式会社内 Hyogo, 〒6728076, JP)
KIKUNO, Sachi (4025-E-1, Mikkaichi Kurobe-sh, Toyama 31, 〒9380031, JP)

C08F2/18; B01J20/26; C08F20/06

TANAKA, Mitsuo et al. (AOYAMA & PARTNERS, IMP Building 3-7, Shiromi 1-chome, Chuo-ku, Osaka-sh, Osaka 01, 〒5400001, JP)

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