发明名称 |
PROCESS FOR PRODUCTION OF WATER-ABSORBING RESIN PARTICLES, WATER-ABSORBING RESIN PARTICLES, WATER-STOPPING MATERIAL, AND ABSORBENT ARTICLE |
摘要 |
Provided are: a process for the production of water-absorbing resin particles which exhibit high equilibrium swelling performance and combine a high speed of water absorption and speedy initial swelling performance and which have moderate particle diameters and exhibit excellent handleability; water-absorbing resin particles obtained by the process; and a water-stopping material and an absorbent article which are made using the water-absorbing resin particles. The process comprises a step of preparing a hydrous gel-like polymer by conducting the inverse suspension polymerization of a water-soluble ethylenically unsaturated monomer in a hydrocarbon solvent in the absence of an internal crosslinking agent in the presence of a surfactant having an HLB of 8 to 12, and a step of adjusting the water content of the hydrous gel-like polymer to 30 to 110% by mass relative to the water-soluble ethylenically unsaturated monomer constituting the hydrous gel-like polymer, and then subjecting the resulting hydrous gel-like polymer to post-crosslinking. |
申请公布号 |
CA2781165(A1) |
申请公布日期 |
2011.06.03 |
申请号 |
CA20102781165 |
申请日期 |
2010.11.24 |
申请人 |
SUMITOMO SEIKA CHEMICALS CO., LTD. |
发明人 |
KIKUNO, SACHI;HEGURI, ATSUSHI;HANDA, MASAYOSHI;MAEDA, NOBUHIRO |
分类号 |
C08F8/00;A61F13/49;A61F13/53;A61L15/60;C08F20/00;C08J3/24 |
主分类号 |
C08F8/00 |
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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