发明名称 |
Method for producing a spherical ion exchange resin |
摘要 |
<p>A method for producing a spherical crosslinked copolymer, which comprises polymerizing a monofunctional addition-polymerizable monomer and a polyfunctional addition-polymerizable monomer by suspension polymerization in an aqueous medium in the presence of a radical polymerization initiator of the following formula (a) or (b) which has a decomposition temperature for a half-life period of 10 hours within a range of from 60 to 120 DEG C and which is capable of forming at least four radical initiating points per molecule by the decomposition: <CHEM> wherein R1 is a linear or branched C1-10 alkyl group, R2 is a n-substituted C4-15 hydrocarbon group, and n is an integer of at least 2, wherein the plurality of R1 per molecule may be the same or different; (R4-O-O &rparstr& mR5 (b> wherein R4 is a linear or branched C1-10 alkyl group, R5 is a m-substituted C4-25 hydrocarbon group, and m is an integer of at least 2, wherein the plurality of R4 per molecule may be the same or different.</p> |
申请公布号 |
EP0601572(B1) |
申请公布日期 |
1997.10.15 |
申请号 |
EP19930119814 |
申请日期 |
1993.12.08 |
申请人 |
MITSUBISHI CHEMICAL CORPORATION |
发明人 |
ITO, TSUYOSHI;WATANABE, JUNYA;SUGAWARA, TOYOKAZU |
分类号 |
B01J39/20;C08F4/38;C08F8/00;C08F212/04;(IPC1-7):C08F4/38 |
主分类号 |
B01J39/20 |
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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