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    • 10. 发明授权
    • Process for producing propylene oxide
    • 生产环氧丙烷的方法
    • US06600054B2
    • 2003-07-29
    • US10221366
    • 2002-09-12
    • Noriaki OkuToshikazu Omae
    • Noriaki OkuToshikazu Omae
    • C07D30119
    • C07D301/19
    • A process for producing propylene oxide, which comprises steps described below, wherein isopropylbenzene hydroperoxide supplied to an epoxidation step has not undergone a heat history including heating at a temperature not lower than the temperature (t° C.) represented by the following equation (1), t(° C.)=150−0.8×W  (1) W: content (% by weight) of isopropylbenzene hydroperoxide in a solution containing isopropylbenzene hydroperoxide: oxidation step; a step in which isopropylbenzene is oxidized to obtain isopropylbenzene hydroperoxide, epoxidation step; a step in which isopropylbenzene hydroperoxide obtained in the oxidation step is reacted with propylene to obtain propylene oxide and cumyl alcohol, and hydrogenolysis step; a step in which cumyl alcohol obtained in the epoxidation step is subjected to hydrogenolysis to obtain isopropylbenzene, and said isopropylbenzene is recycled to the oxidation step as a raw material for the oxidation step.
    • 一种生产环氧丙烷的方法,其包括以下步骤,其中提供给环氧化步骤的异丙基苯氢过氧化物没有经历热历程,包括在不低于由下式(1)表示的温度(t℃)的温度下加热 ),W:含异丙基苯氢过氧化物的溶液中异丙苯氢过氧化物的含量(重量%):氧化步骤; 异丙苯氧化得到异丙基苯氢过氧化物的步骤,环氧化步骤; 在氧化步骤中得到的异丙基苯氢过氧化物与丙烯反应得到环氧丙烷和枯
      醇,并进行氢解步骤; 将在环氧化步骤中得到的异丙醇进行氢解以获得异丙基苯的步骤,并将所述异丙基苯循环到氧化步骤作为氧化步骤的原料。