发明名称 |
ABSORBENT AND MANUFACTURING METHOD THEREFOR |
摘要 |
The present invention provides (i) a water absorbing agent which is excellent in a water absorbing physical properties, in particular water absorbing speed and has a great bulk specific gravity and (ii) a method for producing the water absorbing agent. The method for producing the water absorbing agent includes a surfactant adding step of adding a surfactant whose HLB is 10 or less. The surfactant adding step is the step of adding a dispersion liquid, which contains the surfactant equivalent to 30 parts by weight to 150 parts by weight, relative to 1000000 parts by weight of a water absorbent resin solid content, and the surfactant adding step is carried out after a drying step. Further, in a case where a water-soluble polyvalent metal salt adding step is carried out after the drying step, the surfactant adding step is carried out after the water-soluble polyvalent metal salt adding step. |
申请公布号 |
EP2905072(A4) |
申请公布日期 |
2016.06.08 |
申请号 |
EP20130843776 |
申请日期 |
2013.10.03 |
申请人 |
NIPPON SHOKUBAI CO., LTD. |
发明人 |
NAKATSURU, REIKO;TANAKA, NOBUYA;MITSUKAMI, YOSHIRO |
分类号 |
B01J20/30;A61F13/15;A61F13/53;B01J20/26;C08J3/12 |
主分类号 |
B01J20/30 |
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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