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    • 1. 发明授权
    • Treatment of methanolic-aqueous residues from syntheses employing
triphenylphosphonium salts
    • 使用三苯基鏻盐从合成处理甲醇 - 水残余物
    • US4206153A
    • 1980-06-03
    • US969665
    • 1978-12-15
    • Paul GrafenHans-Ulrich ScholzBernhard Schulz
    • Paul GrafenHans-Ulrich ScholzBernhard Schulz
    • C07C29/76C07C27/00C07C29/80C07C29/84C07C31/04C07C43/30C07C67/00C07C401/00C07C403/00C07C403/08C07C403/12C07F9/53
    • C07C403/12C07C29/84C07F9/5325C07C2101/16
    • A process for treating residues which result from the Wittig synthesis of olefins and which consist principally of methanol, triphenylphosphine oxide, salts and organic by-products, by steam-stripping the volatile constituents, with partial condensation of the steam, and separating the resulting aqueous-organic mixture at 80.degree.-100.degree. C. into a saline aqueous phase and an organic phase containing principally triphenylphosphine oxide. Using this process provides a simple method of freeing, from triphenylphosphine oxide and other organic impurities, the effluent from syntheses which result in the formation of triphenylphosphine oxide, and thereby on the one hand substantially facilitates the purification of the effluent and on the other hand provides a simple method of recovering the triphenylphosphine oxide. The latter compound, which is easily purified by distillation or recrystallization, can then be used, for example, to prepare the triphenylphosphine required for Wittig syntheses or to prepare the triphenylphosphine dichloride required for the synthesis of pesticides.
    • 用于处理由Wittig合成烯烃产生的残余物的方法,其主要由甲醇,三苯基氧化膦,盐和有机副产物组成,通过汽提汽提挥发性成分,蒸汽部分冷凝,并将所得水溶液 - 有机混合物在80°-100℃下进入盐水水相和主要含有三苯基氧化膦的有机相。 使用该方法提供了从三苯基氧化膦和其它有机杂质释放导致形成三苯基氧化膦的合成流出物的简单方法,从而一方面大大有利于流出物的纯化,另一方面提供 回收三苯基氧化膦的简单方法。 然后可以通过蒸馏或重结晶容易地纯化的后者化合物,例如,制备Wittig合成所需的三苯基膦或制备合成农药所需的三苯基膦二氯化物。
    • 2. 发明授权
    • Production of dry powders of substances which are sensitive to oxidation
    • 生产对氧化敏感的物质的干粉
    • US4519961A
    • 1985-05-28
    • US413085
    • 1982-08-30
    • Horst SchumacherPaul Grafen
    • Horst SchumacherPaul Grafen
    • A61K9/14A23L1/00A23L1/302A23P1/04A23P1/06A61K9/16A61J5/00B01J13/02B05D7/00
    • A61K9/1658A23L33/15A23P10/30A23P10/43A61K9/1694A61K9/1623A61K9/1652
    • A process for pulverizing substances which are sensitive to oxidation, in particular oily substances, by dispersing oil-soluble substances, e.g. vitamins, carotinoids, pharmaceutically active compounds or aromas, in an aqueous solution of a film-forming colloid, which constitutes the continuous phase of the dispersion, with the addition of one or more substances from the group comprising the mono-, di- and polysaccharides, atomizing the dispersion, in a spray tower, in the presence of a spraying assistant and collecting the resulting particles in a fluidized bed, wherein, as the spraying auxiliary, a hydrophobic silica or a metal salt of a higher fatty acid is introduced above the fluidized bed and distributed uniformly in the spraying space, at a temperature at which the colloid of the atomized particles has not yet solidified, and the assistant-laden particles, colloid material of which essentially has not yet gelatinized, is collected in a fluidized bed, and dried therein in a conventional manner.
    • 通过分散油溶性物质,例如粉碎对氧化敏感的物质,特别是油性物质的方法。 维生素,类胡萝卜素,药物活性化合物或香气,在构成分散体的连续相的成膜胶体的水溶液中,加入一种或多种包含单糖,二糖和多糖的物质 ,在喷雾塔中,在喷雾助剂的存在下雾化分散体,并将所得颗粒收集在流化床中,其中,作为喷雾助剂,将疏水性二氧化硅或高级脂肪酸的金属盐引入到 流化床,并且在雾化颗粒的胶体尚未固化的温度下均匀地分布在喷雾空间中,并且其主要尚未凝胶化的助粘剂颗粒(其胶体材料基本上尚未凝胶化)被收集在流化床中, 并以常规方式在其中干燥。