发明名称 |
Production process of hydrophilic crosslinked polymer |
摘要 |
<p>The present invention provides a production process, in which hydrophilic crosslinked polymers can be dried uniformly with good efficiency, and the deterioration during the drying is little. The production process of a hydrophilic crosslinked polymer comprises the steps of polymerizing an aqueous solution including a hydrophilic monomer and a crosslinking agent to obtain a hydrogel crosslinked polymer, and drying the hydrogel crosslinked polymer, thus obtaining the hydrophilic crosslinked polymer, and is characterized in that: the hydrogel crosslinked polymer is dried in a static state until it becomes possible to disintegrate an aggregate of the hydrogel crosslinked polymer; the dried hydrogel crosslinked polymer is disintegrated into a particle size of 20 mm or less; and the disintegrated hydrogel crosslinked polymer is dried in a stirred state and / or a fluidized state.</p> |
申请公布号 |
EP0926162(A1) |
申请公布日期 |
1999.06.30 |
申请号 |
EP19980123937 |
申请日期 |
1998.12.16 |
申请人 |
NIPPON SHOKUBAI CO., LTD. |
发明人 |
YANASE, TORU;MIYAKE, KOJI;HATSUDA, TAKUMI;YANO, AKITO |
分类号 |
C08F2/00;C08F2/10;C08F6/00;C08J3/12;(IPC1-7):C08F2/10;C08F220/06;C08F220/04 |
主分类号 |
C08F2/00 |
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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