发明名称 |
WATER-ABSORBENT RESIN AND ABSORBENT ARTICLE |
摘要 |
Provided are a water-absorbent resin having better water-absorption performance and being prevented from discoloring before and after storage for a long time under high temperature and high humidity, and an absorbent article including the absorbent resin. The water-absorbent resin according to the present invention is prepared by polymerizing a water-soluble ethylenically unsaturated monomer in the presence of an internal-crosslinking agent and performing post-crosslinking with a post-crosslinking agent, wherein the water-absorbent resin satisfies the following properties: (A) a water-absorption capacity of physiological saline of 55 g/g or more, a water-absorption capacity of physiological saline under a load of 4.14 kPa of 15 mL/g or more, and a residual monomer content of 300 ppm or less; and (B) a yellow index of 5.0 or less and a yellow index change ratio (”YI) after leaving for 10 days under 70°C and 90% RH of 10 or less. |
申请公布号 |
EP2998325(A4) |
申请公布日期 |
2016.07.20 |
申请号 |
EP20140893695 |
申请日期 |
2014.11.04 |
申请人 |
SUMITOMO SEIKA CHEMICALS CO., LTD. |
发明人 |
HINAYAMA, TETSUHIRO;MURAKAMI, MASAHIRO;YABUGUCHI, HIROKI;YOKOYAMA, HIDEKI |
分类号 |
C08F2/32;A61F13/49;A61F13/53;C08F8/00;C08F20/06 |
主分类号 |
C08F2/32 |
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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