发明名称 |
Water-absorbent resin particles and the production thereof |
摘要 |
The present invention relates to a process for producing improved water-absorbent resin particles comprising the step of treating water-absorbent particles, which are crosslinked polymers of ethylenically unsaturated monomers comprising acrylic acid and/or acrylic acid salt as an essential element, with a modified silicone oil having a functional group which can react with a carboxyl group and/or a carboxylate group in the molecule Improved water-absorbent resin particles obtained by the process have a hygroscopic blocking rate of 20 % or less under a relative humidity of 80 % at 40 DEG C., a dust level of 10 CPM or less and an absorbing characteristic of initial absorbency under load to physiological saline of 20 times or more. The present invention provides water-absorbent resin particles which have an improved hygroscopic blocking rate under high humidity and dust generation rate with a good initial absorbency under load and absorbing capacity. |
申请公布号 |
US5668078(A) |
申请公布日期 |
1997.09.16 |
申请号 |
US19950476718 |
申请日期 |
1995.06.07 |
申请人 |
SANYO CHEMICAL INDUSTRIES, LTD. |
发明人 |
SUMIYA, TAKASHI;KOIKE, MASANORI;TANAKA, KENJI |
分类号 |
A61L15/26;A61L15/60;B01J20/26;B01J20/32;C08F8/42;C08J3/12;C08L33/02;C08L83/04;(IPC1-7):B01J20/26 |
主分类号 |
A61L15/26 |
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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