发明名称 |
PRODUCTION METHOD FOR WATER-ABSORBING RESIN |
摘要 |
<p>There is provided a production method for a water-absorbing resin for stably and continuously producing the water-absorbing resin with industrially high property, in particular, the water-absorbing resin with high liquid permeation. A method of the present invention relates to a production method for a water-absorbing resin including: a polymerization step of an aqueous solution of an unsaturated monomer; a drying step of the resultant hydrogel polymer; and a surface cross-linking step after drying; characterized by including a pneumatic transportation step for pneumatic transporting the water-absorbing resin powder substance in a pipeline with a surface roughness (Rz) of the inner surface of equal to or smaller than 800 nm, by using gas with a dew point of - 5°C to - 100°C.</p> |
申请公布号 |
EP2258749(A1) |
申请公布日期 |
2010.12.08 |
申请号 |
EP20090725248 |
申请日期 |
2009.03.26 |
申请人 |
NIPPON SHOKUBAI CO., LTD. |
发明人 |
MATSUMOTO, KOJI;NOGI, KOZO;ISHIZAKI, KUNIHIKO |
分类号 |
A61L15/22;A61L15/60;C08F6/00;C08J3/12;C08J3/24 |
主分类号 |
A61L15/22 |
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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