发明授权
- 专利标题: Method for producing water-absorbent resin particles
- 专利标题(中): 吸水性树脂颗粒的制造方法
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申请号: US14372161申请日: 2013-01-22
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公开(公告)号: US09138722B2公开(公告)日: 2015-09-22
- 发明人: Kenji Tanimura , Hiroki Yabuguchi , Yuichi Onoda , Masayoshi Handa
- 申请人: SUMITOMO SEIKA CHEMICALS CO., LTD.
- 申请人地址: JP Hyogo
- 专利权人: Sumitomo Seika Chemicals Co., Ltd.
- 当前专利权人: Sumitomo Seika Chemicals Co., Ltd.
- 当前专利权人地址: JP Hyogo
- 代理机构: Hamre, Schumann, Mueller & Larson, P.C.
- 优先权: JP2012-043571 20120229
- 国际申请: PCT/JP2013/051207 WO 20130122
- 国际公布: WO2013/128978 WO 20130906
- 主分类号: B01J20/30
- IPC分类号: B01J20/30 ; C08F2/32 ; C08F20/06 ; C08F120/06 ; A61L15/12 ; B01J20/26 ; C08L33/02
摘要:
There is disclosed a method for producing water-absorbent resin particles comprising a step that includes reversed-phase suspension polymerization of a water-soluble ethylenically unsaturated monomer in a suspension containing a surfactant that comprises a surfactant that comprises a fatty acid ester of sorbitan or sorbitol, or derivative thereof, and a hydrocarbon dispersion medium. The fatty acid ester includes a lauric acid ester and at least one kind of other ester selected from the group consisting of palmitic acid esters, stearic acid esters and behenic acid esters. The proportion of the peak area for lauric acid ester is 30-60%, based on the total peak area for fatty acid esters in the GPC chromatogram obtained from the fatty acid esters, and the proportion of the total peak area for other ester is 10-50%.
公开/授权文献
- US20150158015A1 METHOD FOR PRODUCING WATER-ABSORBENT RESIN PARTICLES 公开/授权日:2015-06-11
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