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    • 6. 发明申请
    • PROCESS FOR THE TREATMENT OF AN ION EXCHANGE RESIN
    • 处理离子交换树脂的方法
    • US20140343176A1
    • 2014-11-20
    • US14452101
    • 2014-08-05
    • Lucite International UK Limited
    • Trevor Huw Morris
    • B01J49/00
    • B01J49/60B01J49/50B01J49/53C07C67/343C07C67/60Y02P20/582C07C69/54
    • A process for the reactivation of an acidic ion exchange resin is described. The invention relates to the treatment of an at least partially deactivated resin which has been deactivated by contact with an impure ethylenically unsaturated acid or ester containing target impurities. The reactivation includes the step of contacting the at least partially deactivated resin with an alcohol to thereby increase the activity thereof. The invention extends to reactivating a resin deactivated by contact with an impure ethylenically unsaturated acid, ester or nitrile containing target impurities by contacting the at least partially deactivated resin with an alcohol and a carboxylic acid to thereby increase the activity thereof. A reactivated resin and a process for preparing and purifying an ethylenically unsaturated acid or ester of the following formula: R1—C(═(CH2)m)—COOR2 are also described.
    • 描述了酸性离子交换树脂的再活化方法。 本发明涉及至少部分失活的树脂的处理,其通过与不纯的烯属不饱和酸或含有目标杂质的酯接触而失活。 再活化包括使至少部分失活的树脂与醇接触从而增加其活性的步骤。 本发明通过使至少部分失活的树脂与醇和羧酸接触从而增加其活性,延长了通过与不纯的烯键式不饱和酸,含有目标杂质的酯或腈的接触来还原的树脂失活。 还描述了再活化的树脂和制备和纯化下式的R 1 -C(=(CH 2)m)-COOR 2的烯属不饱和酸或酯的方法。