PROCESS FOR PURIFYING BISPHENOL-A
    3.
    发明申请
    PROCESS FOR PURIFYING BISPHENOL-A 审中-公开
    净化双酚A的方法

    公开(公告)号:WO2004048430A3

    公开(公告)日:2004-10-07

    申请号:PCT/US0335900

    申请日:2003-11-12

    Abstract: Bisphenol-A is purified in a process which comprises the following steps: a) cooling a liquid mixture comprising bisphenol-A and water in a bisphenol-A crystallizer to form bisphenol-A crystals in a liquid phase; b) separating the bisphenol-A crystals from the liquid phase; c) dividing at least a portion of the liquid phase into a bisphenol-rich organic phase and a water-rich phase; d) feeding phenol and at least a portion of the bisphenol-rich organic phase into a adduct crystallizer to form a crystalline adduct of phenol and bisphenol-A in a mother liquor; and e) separating the crystalline adduct from the mother liquor. Bisphenol-A of high purity at a high yield is obtained.

    Abstract translation: 双酚A在包括以下步骤的方法中纯化:a)在双酚A结晶器中冷却包含双酚A和水的液体混合物以形成液相中的双酚A晶体; b)从液相中分离出双酚A晶体; c)将至少一部分液相分成富含双酚的有机相和富水相; d)将苯酚和至少一部分富含双酚的有机相进料到加合物结晶器中以在母液中形成苯酚和双酚-A的结晶加合物; 和e)从母液中分离晶体加合物。 获得高纯度的双酚A。

    PROCESS FOR PURIFYING BISPHENOL-A
    5.
    发明申请
    PROCESS FOR PURIFYING BISPHENOL-A 审中-公开
    纯化双酚-A的方法

    公开(公告)号:WO2004048430A2

    公开(公告)日:2004-06-10

    申请号:PCT/US2003/035900

    申请日:2003-11-12

    IPC: C08G

    Abstract: Bisphenol-A is purified in a process which comprises the following steps: a) cooling a liquid mixture comprising bisphenol-A and water in a bisphenol-A crystallizer to form bisphenol-A crystals in a liquid phase; b) separating the bisphenol-A crystals from the liquid phase; c) dividing at least a portion of the liquid phase into a bisphenol-rich organic phase and a water-rich phase; d) feeding phenol and at least a portion of the bisphenol-rich organic phase into a adduct crystallizer to form a crystalline adduct of phenol and bisphenol-A in a mother liquor; and e) separating the crystalline adduct from the mother liquor. Bisphenol-A of high purity at a high yield is obtained.

    Abstract translation: 在包括以下步骤的方法中纯化双酚-A:a)在双酚-A结晶器中冷却包含双酚-A和水的液体混合物以在液相中形成双酚-A晶体 ; b)从液相中分离双酚A晶体; c)将至少一部分液相分成富含双酚的有机相和富水相; d)将苯酚和至少一部分富含双酚的有机相加入加合物结晶器中以在母液中形成苯酚和双酚-A的结晶加合物; 和e)从母液中分离结晶加合物。 高纯度的双酚-A以高收率获得。

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