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9 条记录 (耗时 0.027 秒)

    Process for the preparation of spherical particles of magnesium alkoxide
    1.
    发明授权
    Process for the preparation of spherical particles of magnesium alkoxide 失效
    制备烷氧基镁球形颗粒的方法

    公开(公告)号：US5227542A

    公开(公告)日：1993-07-13

    申请号：US938511

    申请日：1992-09-01

    申请人： Udo Horns ,  Thomas Jostmann ,  Klaus-Dieter Kassmann ,  Reinhard Matthes ,  Hartwig Rauleder

    发明人： Udo Horns ,  Thomas Jostmann ,  Klaus-Dieter Kassmann ,  Reinhard Matthes ,  Hartwig Rauleder

    IPC分类号： C07C29/68

    CPC分类号： C07C29/68

    摘要： The invention involves spherical particles of magnesium alkoxide and a process for their preparation. Specifically, spherical magnesium alkoxide is produced by spray drying of an alcoholic solution of the corresponding carboxylated magnesium alkoxide and subsequent drying and decarboxylation, characterized in that the solution is sprayed via a two-material nozzle with inner atomization, which is operated in the part-load range at 10 to 30% of its capacity, into an inert accompanying gas which is under a pressure of 1.0 to 1.2 bar, has been preheated to 100.degree.-140.degree. C. and is fed cocurrently, after which the resulting finely divided carboxylated magnesium alkoxide is dried and is decarboxylated. The magnesium alkoxide is used for the preparation of a catalyst for the polymerization of .alpha.-olefins.

    摘要翻译： 本发明涉及烷氧基镁的球形颗粒及其制备方法。 具体地说，通过喷雾干燥相应的羧化镁醇盐的醇溶液并随后进行干燥和脱羧来制造球形镁醇盐，其特征在于，所述溶液通过内部雾化的双材料喷嘴喷雾， 将负载范围为其容量的10〜30％，进入压力为1.0〜1.2巴的惰性伴随气体，预热至100-140℃，并且并流，然后将得到的细碎羧化 将醇氧化镁干燥并脱羧。 烷氧基镁用于制备α-烯烃聚合催化剂。

    Method and apparatus for the preparation of dichlorosilane
    8.
    发明授权
    Method and apparatus for the preparation of dichlorosilane 失效
    制备二氯硅烷的方法和设备

    公开(公告)号：US5026533A

    公开(公告)日：1991-06-25

    申请号：US173969

    申请日：1988-03-28

    申请人： Reinhard Matthes ,  Reinhold Schork ,  Hans-Joachim Vahlensieck

    发明人： Reinhard Matthes ,  Reinhold Schork ,  Hans-Joachim Vahlensieck

    IPC分类号： B01J21/08 ,  B01J31/02 ,  B01J37/02 ,  C01B33/107

    CPC分类号： B01J31/0274 ,  B01J21/08 ,  B01J31/0254 ,  B01J31/0275 ,  B01J37/0209 ,  C01B33/10773

    摘要： Disclosed are a method and apparatus for the preparation of dichlorosilane by the disproportionation of trichlorosilane at standard pressure and temperatures up to the boiling point of the trichlorosilane in a reactor having a solid-bed catalyst while removing dichlorosilane with contents of trichlorosilane from the gas chamber of the reactor for separation in a distillation column and derivation of liquid reaction phase for the separation of tetrachlorosilane from trichlorosilane in a distillation column with recycling of trichlorosilane into the reactor. Preferably a common distillation column is provided for both separations. The apparatus consists of the solid-bed reactor and the distillation column which is disposed alongside it and in which the receiver for pure tetrachlorosilane, the infeed of liquid reaction phase, the tapping and recycling of trichlorosilane into the reactor, and the input of gaseous dischlorosilane with contents of trichlorosilane are disposed one above the other, and the condenser and the receiver for dichlorosilane are disposed at the top of the column.

    摘要翻译： 公开了一种在具有固体床催化剂的反应器中通过三氯硅烷在标准压力和温度下直至三氯硅烷的沸点歧化制备二氯硅烷的方法和装置，同时从含有三氯硅烷的气室中除去二氯硅烷 用于在蒸馏塔中分离的反应器和用于在三氯硅烷再循环到反应器中的蒸馏塔中从四氯硅烷中分离四氯硅烷的液体反应相的衍生物。 优选地，为两个分离提供常用的蒸馏塔。 该设备由固体床反应器和旁边配置的蒸馏塔组成，其中纯四氯硅烷的接收器，液体反应相的进料，三氯硅烷的回收和再循环进入反应器，以及输入气体的氯化硅烷 其中三氯硅烷的含量一个接一个地设置，并且二氯硅烷的冷凝器和接收器设置在塔的顶部。

    Method for the production of anhydrous potassium tert.butoxide
    9.
    发明授权
    Method for the production of anhydrous potassium tert.butoxide 失效
    生产无水叔丁醇钾的方法

    公开(公告)号：US4577045A

    公开(公告)日：1986-03-18

    申请号：US714369

    申请日：1985-03-21

    申请人： Reinhard Matthes ,  Hans-Joachim Vahlensieck

    发明人： Reinhard Matthes ,  Hans-Joachim Vahlensieck

    IPC分类号： C07C27/00 ,  C07C29/70 ,  C07C31/30 ,  C07C67/00

    CPC分类号： C07C29/70

    摘要： Disclosed is a method for continuous production of anhydrous potassium tert.butoxide from aqueous potash lye and tert.butyl alcohol in a packed distillation column. The water of reaction and the water brought in by the starting products is distilled out at the top of the column with the aid of a withdrawing agent. In the bottom of the column an alcoholic solution of the potassium tert.butoxide is produced, which is withdrawn and then processed for isolation of the anhydrous salt. The tert.butyl alcohol is used in excess such that a 10 to 18 weight-percent solution of the salt in alcohol is produced in the bottom of the column. The amount of tert.butyl alcohol together with the amount of the withdrawing agent is selected such that the tert.butyl alcohol content in the gas mixture at the center of the column will be between 50 and 90% by weight. The bottom of the column is continuously maintained at ebullition. A gas mixture of 20 to 50 wt. -% of tert.butyl alcohol and 50 to 80 wt. -% of the withdrawing agent is withdrawn from the top of the column at a temperature between 65.degree. and 75.degree. C. Cyclohexane or hexane is used as withdrawing agent in accordance with the invention.

    摘要翻译： 公开了一种在填充蒸馏塔中从钾盐碱和叔丁醇水溶液中连续生产无水叔丁醇钾的方法。 借助于抽出剂，将反应水和起始产物所带来的水在柱顶部蒸馏掉。 在塔的底部，产生叔丁醇钾的醇溶液，将其取出，然后加工以分离无水盐。 使用叔丁醇过量，使得在塔底产生10至18重量％的盐中的盐溶液。 选择叔丁醇与取出剂的量的量，使得在塔中心的气体混合物中的叔丁醇含量为50-90重量％。 塔的底部连续保持在沸腾状态。 20至50重量份的气体混合物 - 叔丁醇的％和50〜80重量％ - 在65℃至75℃之间的温度下，从柱顶部取出吸收剂的％。环己烷或己烷用作根据本发明的萃取剂。