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    • 6. 发明申请
    • A PROCESS FOR THE PREPARATION OF TETRABROMOBISPHENOL A
    • 一种制备四异丙基酚A的方法
    • WO2007007315A2
    • 2007-01-18
    • PCT/IL2006/000771
    • 2006-07-03
    • BROMINE COMPOUNDS LTD.ZILBERMAN, Joseph
    • ZILBERMAN, Joseph
    • C07C37/20
    • C07C37/62C07C39/367
    • A process for preparing tetrabromobisphenol A, which comprises: i) reacting bisphenol A and bromine in dichloromethane in the presence of aqueous hydrogen peroxide at a temperature in the range of room temperature to the reflux temperature, wherein said dichloromethane is present in an amount sufficient for substantially dissolving brominated derivatives of said bisphenol A formed thereby, ii) separating the substantially solid-free reaction mixture obtained in step i) into aqueous and organic phases, precipitating tetrabromobisphenol A from the organic phase and isolating said precipitated tetrabromobisphenol A from said organic phase.
    • 一种制备四溴双酚A的方法,其包括:i)在室温至回流温度范围内的温度范围内,在双氧水中,在过氧化氢水溶液存在下,使双酚A和溴反应,其中所述二氯甲烷的存在量足以 基本上溶解由此形成的所述双酚A的溴化衍生物,ii)将步骤i)中获得的基本上无固体的反应混合物分离成水相和有机相,从有机相中沉淀出四溴双酚A,并将所述沉淀的四溴双酚A从所述有机相中分离出来。