发明名称 |
Production process for water-absorbent resin |
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 %.
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申请公布号 |
US6927268(B2) |
申请公布日期 |
2005.08.09 |
申请号 |
US20010883266 |
申请日期 |
2001.06.19 |
申请人 |
NIPPON SHOKUBAI CO., LTD. |
发明人 |
MATSUMOTO YUKIHIRO;ISHIZAKI KUNIHIKO;KANTO TERUYUKI |
分类号 |
C08F2/00;C08F20/06;(IPC1-7):C08F220/46 |
主分类号 |
C08F2/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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