- 专利标题: Production process for water-absorbent resin
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申请号: US11143628申请日: 2005-06-03
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公开(公告)号: US20050228154A1公开(公告)日: 2005-10-13
- 发明人: Yukihiro Matsumoto , Kunihiko Ishizaki , Teruyuki Kanto
- 申请人: Yukihiro Matsumoto , Kunihiko Ishizaki , Teruyuki Kanto
- 优先权: JP2000-187021 20000621
- 主分类号: C08F2/00
- IPC分类号: C08F2/00 ; C08F20/06 ; C08F220/46
摘要:
The present invention provides a process for producing a water-absorbent resin of which the residual monomer content and the extractable content are low. The process for producing a water-absorbent resin comprises the step of polymerizing at least one monomer component including acrylic acid and/or its salt as major components to produce a water-absorbent resin that is a neutralized salt, and this process is characterized in that the acrylic acid is a product obtained by catalytic gas phase oxidation of propylene and/or propane and has a protoanemonin content of not more than 10 ppm, and in that the resultant water-absorbent resin has a neutralization ratio of not less than 50 mol %.
公开/授权文献
- US07238743B2 Production process for water-absorbent resin 公开/授权日:2007-07-03