发明名称 |
Process for producing a water-absorbent resin |
摘要 |
A water-absorbent resin having excellent physical properties can be produced by a process wherein an aqueous solution containing an alpha , beta -unsaturated carboxylic acid and an alkali metal salt thereof in a total amount of 25% by weight or more is subjected to polymerization with a radical polymerization initiator in a petroleum-based hydrocarbon solvent in the presence or absence of a crosslinking agent, characterized by using, as a surfactant, a polyglycerine-fatty acid ester having an HLB of 2 to 16 and represented by the general formula <IMAGE> (wherein R is an acyl group or hydrogen atom and n is an integer of 0 to 8).
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申请公布号 |
US4880888(A) |
申请公布日期 |
1989.11.14 |
申请号 |
US19870000238 |
申请日期 |
1987.01.05 |
申请人 |
SEITETSU KAGAKU CO., LTD. |
发明人 |
OBAYASHI, SHIGEJI;NAKAMURA, MORIO;YAMAMOTO, TAKUSHI;TANAKA, HITOSHI;SAKAMOTO, YUJI |
分类号 |
C10L1/04;C08F2/00;C08F20/04;C10L1/16;F02B1/04;(IPC1-7):C08F2/00 |
主分类号 |
C10L1/04 |
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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