发明名称 |
PROCESS FOR PRODUCTION OF WATER-ABSORBENT RESIN |
摘要 |
A purpose of the present invention is to reduce odor of a water-absorbent resin during absorption of water. Such the invention is attained by a process for production of a water-absorbent resin by subjecting a water-soluble ethylenically unsaturated monomer to reversed-phase suspension polymerization. The process comprises the following steps (A) to (C): (A) adding an aqueous solution of water-soluble ethylenically unsaturated monomer to a petroleum hydrocarbon dispersion medium to disperse the aqueous solution in the dispersion medium; (B) adding a surfactant to the emulsion to further disperse the emulsion; and (C) performing the reversed-phase suspension polymerization using a water-soluble radical polymerization initiator, optionally in the presence of an internal-crosslinking agent.
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申请公布号 |
US2009182092(A1) |
申请公布日期 |
2009.07.16 |
申请号 |
US20070298195 |
申请日期 |
2007.04.26 |
申请人 |
SUMITOMO SEIKA CHEMICALS CO., LTD. |
发明人 |
YOKOYAMA HIDEKI;NAWATA YASUHIRO |
分类号 |
C08F2/08;C08F2/04 |
主分类号 |
C08F2/08 |
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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