发明名称 |
PROCESS FOR PRODUCING WATER-ABSORBING RESIN |
摘要 |
<p>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.</p> |
申请公布号 |
EP2404954(B1) |
申请公布日期 |
2015.04.22 |
申请号 |
EP20100748535 |
申请日期 |
2010.03.04 |
申请人 |
NIPPON SHOKUBAI CO., LTD. |
发明人 |
KADONAGA, KENJI;TADA, KENJI;SASABE, MASAZUMI;KATO, SEIJI |
分类号 |
C08J3/12;B29B7/36;B29B7/94;C08J3/20 |
主分类号 |
C08J3/12 |
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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