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    • 1. 发明授权
    • Production process of bisphenol compounds
    • 双酚化合物的生产工艺
    • US06316677B1
    • 2001-11-13
    • US09270016
    • 1999-03-16
    • Masahiro EnnaNaoshi NagaiToshiyuki Isaka
    • Masahiro EnnaNaoshi NagaiToshiyuki Isaka
    • C07C3912
    • C07C37/84C07C37/14C07C37/16C07C39/16C07C39/15
    • A process for the production of a bisphenol compound comprising: a step for reacting a phenolic compound (a) with at least one compound (b) selected from the group consisting of dialkenylbenzene compounds, bis(hydroxyalkyl)benzene compounds and (hydroxyalkyl)-alkenylbenzene compounds or at least one compound (c) selected from the group consisting of monoalkenylphenolic compounds and mono(hydroxyalkyl)phenolic compounds in the presence of an acidic catalyst to obtain a reaction mixture containing said bisphenol compound, a step for neutralizing the reaction mixture with an anion exchange resin, a step for removing a remaining phenolic compound from the reaction mixture to concentrate the neutralized reaction mixture, and a step for isolating the bisphenol compound from the resulting concentrated mixture. This process enables to produce a bisphenol compound, which is useful for preparing raw materials of thermoplastic polymers, surface-active agents and stabilizers.
    • 一种制备双酚化合物的方法,包括:使酚类化合物(a)与至少一种选自二苯基苯化合物,双(羟烷基)苯化合物和(羟基烷基) - 烯基苯的化合物(b)反应的步骤 化合物或至少一种选自单链烯基酚化合物和单(羟基烷基)酚类化合物的化合物(c),在酸性催化剂存在下,得到含有所述双酚化合物的反应混合物,将反应混合物与 阴离子交换树脂,用于从反应混合物中除去剩余的酚类化合物以浓缩中和的反应混合物的步骤,以及从所得浓缩混合物中分离双酚化合物的步骤。该方法能够生产双酚化合物,其可用于制备 热塑性聚合物的原料,表面活性剂和稳定剂。
    • 2. 发明授权
    • Process for producing lower olefins
    • 低级烯烃的制备方法
    • US5475183A
    • 1995-12-12
    • US161061
    • 1993-12-03
    • Shintaro ArakiKatsuo TaniguchiToshiyuki Isaka
    • Shintaro ArakiKatsuo TaniguchiToshiyuki Isaka
    • B01J21/04C07C1/24C07C1/20
    • B01J21/04C07C1/24C07C2521/04C07C2521/12Y02P20/52
    • A process for the production of lower olefins by dehydrating lower alcohols having 2 to 4 carbon atoms which comprises using a .gamma.-alumina catalyst containing 0.3% by weight or less of impurities in total excluding SiO.sub.2, the impurities including 0.2% by weight or less of sulfur content calculated in terms of SO.sub.4 - and 0.05% by weight or less of sodium content calculated in terms of Na.sub.2 O, and/or a process for the production of lower olefins by dehydrating lower alcohols having 2 to 4 carbon atoms that comprises using a .gamma.-alumina catalyst which contains 0.5 to 5% by weight of SiO.sub.2.According to the process of the present invention, lower olefins can be produced from lower alcohols with high yield and high selectivity for a prolonged period of time without reducing the catalytic activity.
    • 通过使具有2至4个碳原子的低级醇脱水生产低级烯烃的方法,该方法包括使用含有0.3重量%以下除了SiO 2以外的杂质总量为0.3重量%以下的γ-氧化铝催化剂,包含0.2重量%以下的杂质 根据SO 4计算的硫含量和以Na 2 O计算的0.05重量%以下的钠含量,和/或通过使具有2至4个碳原子的低级醇脱水生产低级烯烃的方法,包括使用γ 含有0.5〜5重量%的SiO 2的氧化铝催化剂。 根据本发明的方法,低级烯烃可以从高产率和高选择性的低级醇生产较长时间,而不降低催化活性。