发明名称 |
POLYACRYLATE SUPER-ABSORBENT POLYMER AND MANUFACTURING METHOD THEREFOR |
摘要 |
As a method for producing a polyacrylic acid (salt)-based water absorbent resin particle which less generates fine powder and has an excellent impact resistance and a high moisture content even in a case where the polyacrylic acid (salt)-based water absorbent resin particle is produced on a large scale, employed is a production method including the steps of: (a) adding a surface crosslinking agent solution to water absorbent resin powder to obtain a mixture; (b) reacting the mixture; and, thereafter (c) adding an aqueous liquid to at least one selected from the group consisting of (i) the water absorbent resin powder during the step (b) and (ii) the water absorbent resin powder after the step (b), an atmospheric dew point being not lower than 20°C in the step (c), and a temperature of the water absorbent resin powder being higher than the atmospheric dew point in the step (c). |
申请公布号 |
EP2927266(A1) |
申请公布日期 |
2015.10.07 |
申请号 |
EP20130860396 |
申请日期 |
2013.12.03 |
申请人 |
NIPPON SHOKUBAI CO., LTD. |
发明人 |
WADA, HIDENORI;IMURA, MOTOHIRO;WADA, KATSUYUKI;KATO, SEIJI |
分类号 |
C08J3/24;A61L15/24;A61L15/42;A61L15/60 |
主分类号 |
C08J3/24 |
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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