发明名称 |
CROSSLINKED SEEDED COPOLYMER BEADS AND PROCESS OF MANUFACTURE |
摘要 |
Seeded cation-exchange resin beads are particularly susceptible to oxidative degradation which results in the leaching of organic carbon fragments. The leachability of organic carbon fragments of molecular weights greater than 1000 g/mol is reduced to less than 800 ppm by effectively crosslinking the copolymers that comprise the seeded cation-exchange resin beads. Crosslinking can be achieved either during sulfonation by increasing sulfone bridge formation or before sulfonation by either alkylene bridge formation or by incorporation and subsequent activation of a crosslinkable functionality in the copolymer that forms the seed in the seeded polymer bead process.
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申请公布号 |
WO9613533(A1) |
申请公布日期 |
1996.05.09 |
申请号 |
WO1995US13394 |
申请日期 |
1995.10.19 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
HARRIS, WILLIAM, I.;SAMMLER, ROBERT, L. |
分类号 |
B01J39/20;C08F8/36;C08F257/02;(IPC1-7):C08F257/02 |
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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