发明名称 |
Bifunctional anion-exchange resins with improved selectivity and exchange kinetics |
摘要 |
Disclosed herein are a class of anion exchange resins containing two different exchange sites with improved selectivity and sorptive capability for chemical species in solution, such as heptavalent technetium (as pertechnetate anion, TcO4-). The resins are prepared by first reacting haloalkylated crosslinked copolymer beads with a large tertiary amine in a solvent in which the resin beads can swell, followed by reaction with a second, smaller, tertiary amine to more fully complete the functionalization of the resin. The resins have enhanced selectivity, capacity, and exchange kinetics.
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申请公布号 |
US6059975(A) |
申请公布日期 |
2000.05.09 |
申请号 |
US19970922198 |
申请日期 |
1997.09.02 |
申请人 |
LOCKHEED MARTIN ENERGY RESEARCH CORPORATION |
发明人 |
ALEXANDRATOS, SPIRO D.;BROWN, GILBERT M.;BONNESEN, PETER V.;MOYER, BRUCE A. |
分类号 |
B01D15/04;B01J41/04;B01J41/14;C02F1/42;C08F8/32;(IPC1-7):C02F1/42 |
主分类号 |
B01D15/04 |
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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