发明名称 |
Method for producing water absorbent resin |
摘要 |
The present invention is a method for producing a water absorbent resin which method is a method for producing surface cross-linked water absorbent resin particles, the method including the successive steps of: (a) adding a surface cross-linking agent and water to a particulate water absorbent resin in a mixer; and (b) reacting the resulting water absorbent resin mixture taken out from the mixer with the surface cross-linking agent in a reactor by heating or active energy ray irradiation, water vapor being used as part or all of the water added in the mixer. This makes it possible to provide a method for producing a water absorbent resin in which method a surface cross-linked water absorbent resin that has excellent properties can be obtained efficiently at low cost with high productivity.
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申请公布号 |
US2011319518(A1) |
申请公布日期 |
2011.12.29 |
申请号 |
US201013254573 |
申请日期 |
2010.03.04 |
申请人 |
KADONAGA KENJI;TADA KENJI;SASABE MASAZUMI;KATO SEIJI;NIPPON SHOKUBAI CO., LTD. |
发明人 |
KADONAGA KENJI;TADA KENJI;SASABE MASAZUMI;KATO SEIJI |
分类号 |
C08F301/00;C08F2/46 |
主分类号 |
C08F301/00 |
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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