发明名称 |
Production process for a water-absorbent resin |
摘要 |
<p>In a production process for a water-absorbent resin, comprising the steps of: blending a liquid material and a water-absorbent resin; and heating the resultant mixture in order to produce a modified water-absorbent resin, the present invention is to provide: a method for uniformly and efficiently treating a water-absorbent resin favorably in view of industry, and as a result, a good-balanced water-absorbent resin having various excellent properties, such absorption capacity without a load, absorption capacity under a load, and single-layer absorption capacity under a load in contact with an aqueous liquid. The production process comprises the step of spray-blending a water-absorbent resin (A) and a liquid material (B) with a blending apparatus equipped with a spray nozzle (C), wherein the liquid material (B) is sprayed from the spray nozzle (C) and its spray pattern is a circular and hollow cone shape or a double-convex-lens and elliptic cone shape. In addition, the production process comprises the step of heat-treating a water-absorbent resin under an atmosphere having a dew point of not higher than 60 DEG C and a temperature of not lower than 90 DEG C, wherein the water-absorbent resin is obtained after a drying step following a pulverization step. <IMAGE></p> |
申请公布号 |
EP1191051(B1) |
申请公布日期 |
2010.11.03 |
申请号 |
EP20010121378 |
申请日期 |
2001.09.06 |
申请人 |
NIPPON SHOKUBAI CO., LTD. |
发明人 |
HATSUDA, TAKUMI;IRIE, YOSHIO;NAKAMURA, MASATOSHI;WADA, KATSUYUKI;FUJINO, SHINICHI;KIMURA, KAZUKI;ISHIZAKI, KUNIHIKO |
分类号 |
C08J3/12;A61L15/60;C08F2/00;C08J3/24 |
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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