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    Process for preparing dialkyl vinylphosphonates
    11.
    发明授权
    Process for preparing dialkyl vinylphosphonates 失效
    制备二烷基乙烯基膦酸酯的方法

    公开(公告)号：US5475128A

    公开(公告)日：1995-12-12

    申请号：US353676

    申请日：1994-12-12

    申请人： Gunter Roscher ,  Wolf-Dietmar Kaufmann ,  Bernd Laugwitz

    发明人： Gunter Roscher ,  Wolf-Dietmar Kaufmann ,  Bernd Laugwitz

    IPC分类号： B01D1/22 ,  B01D3/14 ,  C07F9/40 ,  C07F9/38

    CPC分类号： C07F9/4015 ,  B01D1/225 ,  B01D3/146 ,  B01D3/148

    摘要： Process for the continuous preparation of dialkyl vinylphosphonates using catalysts at temperatures of from 150.degree. to 270.degree. C. by dissociation of dialkyl acetoxyethanephosphonates at a pressure of from 5 to 500 mbar in contact with a liquid, catalytically active medium while drawing off the dialkyl vinylphosphonates formed and other volatile reaction products as vapors, by conveying the liquid medium in forced circulation via an evaporator while feeding in fresh dialkyl acetoxyethanephosphonate, if desired admixed with catalyst, corresponding to the distillation of dialkyl vinylphosphonates and other volatile compounds, and drawing off non-volatile material formed as byproduct from the liquid circuit to maintain constant conditions.

    摘要翻译： 使用催化剂在150-270℃的温度下连续制备二烷基乙烯基膦酸酯的方法，通过在5至500毫巴的压力下与液体催化活性介质接触而解离二烷基乙烯基膦酸二烷基酯 形成的和其它挥发性反应产物作为蒸气，通过蒸发器输送液体介质强制循环，同时在新鲜的二烷基乙酰氧基乙烷膦酸盐中进料，如果需要，与催化剂混合，对应于乙烯基膦酸二烷基酯和其它挥发性化合物的蒸馏， 挥发性物质作为液体回路的副产物形成，以保持恒定的条件。

    Carrier catalyst, process for its preparation, and its use for the preparation of vinyl acetate
    12.
    发明授权
    Carrier catalyst, process for its preparation, and its use for the preparation of vinyl acetate 失效
    载体催化剂，其制备方法及其用于制备乙酸乙烯酯的用途

    公开(公告)号：US5292931A

    公开(公告)日：1994-03-08

    申请号：US44212

    申请日：1993-04-07

    申请人： Peter Wirtz ,  Karl-Fred Worner ,  Friedrich Wunder ,  Klaus Eichler ,  Gunter Roscher ,  Ioan Nicolau

    发明人： Peter Wirtz ,  Karl-Fred Worner ,  Friedrich Wunder ,  Klaus Eichler ,  Gunter Roscher ,  Ioan Nicolau

    IPC分类号： B01J23/44 ,  B01J23/06 ,  B01J23/48 ,  B01J23/52 ,  B01J23/58 ,  B01J23/60 ,  B01J23/66 ,  B01J23/89 ,  B01J35/10 ,  B01J37/00 ,  B01J37/02 ,  C07B61/00 ,  C07C67/05 ,  C07C67/055 ,  C07C69/15

    CPC分类号： B01J37/0205 ,  B01J23/58 ,  B01J23/60 ,  C07C67/055

    摘要： The invention relates to a process for the preparation of a catalyst which contains palladium and/or compounds thereof and alkali metal compounds, and additionally cadmium compounds and/or gold and/or compounds thereof, on support particles which have been pressed from SiO.sub.2 or an iO.sub.2 -Al.sub.2 O.sub.3 mixture with the aid of a binder which comprisesa) washing the roasted support particles with an acid which does not react with SiO.sub.2 or SiO.sub.2 -Al.sub.2 O.sub.3 mixtures, until no further cations of the binder employed during pressing of the support particles are released from the support particles;b) then impregnating the support particles with palladium, and gold or cadmium;c) then bringing the impregnated support particles into contact with a solution of a base at least until the thickness of the nobel metal shell generated in this way on the support particles no longer changes substantially; andd) then impregnating the support particles with an alkali metal compound.A shell-like distribution of the palladium and if appropriate of the gold in the support particles is generated in this manner.Furthermore, the invention relates to a catalyst prepared in this way and to its use for the preparation of vinyl acetate.

    摘要翻译： 本发明涉及一种制备催化剂的方法，该催化剂包含钯和/或其化合物和碱金属化合物，以及另外的镉化合物和/或金和/或其化合物，其在从SiO 2或 iO 2 -Al 2 O 3混合物，其包括a）用不与SiO 2或SiO 2 -Al 2 O 3混合物反应的酸洗涤焙烧的载体颗粒，直到在压制载体颗粒期间不再使用粘合剂的阳离子释放 从支撑颗粒; b）然后用钯和金或镉浸渍载体颗粒; c）然后使浸渍的载体颗粒与碱的溶液接触，至少直到以这种方式在载体颗粒上产生的诺贝尔金属壳的厚度不再显着变化; 和d）然后用碱金属化合物浸渍载体颗粒。 以这种方式产生钯的壳状分布和如果合适的支撑颗粒中的金。 此外，本发明涉及以这种方式制备的催化剂及其用于制备乙酸乙烯酯的用途。

    Carrier catalyst, process for its preparation, and its use for the preparation of vinyl acetate
    14.
    发明授权
    Carrier catalyst, process for its preparation, and its use for the preparation of vinyl acetate 失效
    载体催化剂，其制备方法及其用于制备乙酸乙烯酯的用途

    公开(公告)号：US5250487A

    公开(公告)日：1993-10-05

    申请号：US900839

    申请日：1992-06-18

    申请人： Peter Wirtz ,  Karl-Fred Worner ,  Friedrich Wunder ,  Klaus Fichler ,  Gunter Roscher ,  Ioan Nicolau

    发明人： Peter Wirtz ,  Karl-Fred Worner ,  Friedrich Wunder ,  Klaus Fichler ,  Gunter Roscher ,  Ioan Nicolau

    IPC分类号： B01J23/44 ,  B01J23/06 ,  B01J23/48 ,  B01J23/52 ,  B01J23/58 ,  B01J23/60 ,  B01J23/66 ,  B01J23/89 ,  B01J35/10 ,  B01J37/00 ,  B01J37/02 ,  C07B61/00 ,  C07C67/05 ,  C07C67/055 ,  C07C69/15 ,  B01J37/06

    CPC分类号： B01J37/0205 ,  B01J23/58 ,  B01J23/60 ,  C07C67/055

    摘要： The invention relates to a process for the preparation of a catalyst which contains palladium and/or compounds thereof and alkali metal compounds, and additionally cadmium compounds and/or gold and/or compounds thereof, on support particles which have been pressed from SiO.sub.2 or an iO.sub.2 -Al.sub.2 O.sub.3 mixture with the aid of a binder which comprisesa) washing the roasted support particles with an acid which does not react with SiO.sub.2 or SiO.sub.2 -Al.sub.2 O.sub.3 mixtures, until no further cations of the binder employed during pressing of the support particles are released from the support particles;b) then impregnating the support particles with palladium, and gold or cadmium;c) then bringing the impregnated support particles into contact with a solution of a base at least until the thickness of the nobel metal shell generated in this way on the support particles no longer changes substantially; andd) then impregnating the support particles with an alkali metal compound.A shell-like distribution of the palladium and if appropriate of the gold in the support particles is generated in this manner.Furthermore, the invention relates to a catalyst prepared in this way and to its use for the preparation of vinyl acetate.

    摘要翻译： 本发明涉及一种制备催化剂的方法，该催化剂包含钯和/或其化合物和碱金属化合物，以及另外的镉化合物和/或金和/或其化合物，其在从SiO 2或 iO 2 -Al 2 O 3混合物，其包括a）用不与SiO 2或SiO 2 -Al 2 O 3混合物反应的酸洗涤焙烧的载体颗粒，直到在压制载体颗粒期间不再使用粘合剂的阳离子释放 从支撑颗粒; b）然后用钯和金或镉浸渍载体颗粒; c）然后使浸渍的载体颗粒与碱的溶液接触，至少直到以这种方式在载体颗粒上产生的诺贝尔金属壳的厚度不再显着变化; 和d）然后用碱金属化合物浸渍载体颗粒。 以这种方式产生钯的壳状分布和如果合适的支撑颗粒中的金。 此外，本发明涉及以这种方式制备的催化剂及其用于制备乙酸乙烯酯的用途。

    Process for the isolation of vinyl acetate
    15.
    发明授权
    Process for the isolation of vinyl acetate 失效
    乙酸乙烯酯分离方法

    公开(公告)号：US4818347A

    公开(公告)日：1989-04-04

    申请号：US133248

    申请日：1987-12-10

    申请人： Gunter Roscher ,  Karl H. Schmidt ,  Hansjorg Hey ,  Horst Langner ,  Erwin Andereya

    发明人： Gunter Roscher ,  Karl H. Schmidt ,  Hansjorg Hey ,  Horst Langner ,  Erwin Andereya

    IPC分类号： B01D3/00 ,  C07C51/44 ,  C07C67/055 ,  C07C67/48 ,  C07C67/54 ,  C07C69/15

    CPC分类号： C07C67/055 ,  C07C67/54 ,  Y10S203/09 ,  Y10S203/10 ,  Y10S203/20

    摘要： The invention relates to a process for the isolation of vinyl acetate from a gas mixture containing vinyl acetate, ethyl acetate, water and carbon dioxide formed in the reaction of ethylene with acetic acid and oxygen in the gas phase over catalysts containing palladium or palladium compounds. The gas mixture leaving the reaction zone is passed into a distillation column and the gas mixture leaving the top thereof is cooled. The gas which is not condensed during the cooling is washed with acetic acid in a washing column, an acetic acid solution containing vinyl acetate being obtained. The bottom product from the distillation column is passed to a second distillation column and a side stream containing ethyl acetate is removed from an enrichment zone above the bottom thereof, all or some of the bottom product from the second distillation column, which product chiefly consists of acetic acid, being used for the wash in the washing column. The top vapor of the second distillation column is cooled. A portion of the organic phase of the condensate thereby formed is passed, together with the acetic acid solution obtained as the bottom product in the washing column, into a third distillation column, which may have an intermediate tray. The bottom product of the third distillation column is passed into a fourth distillation column. Pure vinyl acetate is removed at the top of the fourth distillation column.

    摘要翻译： 本发明涉及一种从包含乙酸乙烯酯，乙酸乙酯，水和二氧化碳的气体混合物中分离乙酸乙烯酯的方法，该方法是在乙烯与乙酸和气相中的氧反应生成的催化剂中形成的钯和钯化合物。 将离开反应区的气体混合物送入蒸馏塔，并将离开其顶部的气体混合物冷却。 冷却期间未冷凝的气体在洗涤塔中用乙酸洗涤，得到含有乙酸乙烯酯的乙酸溶液。 将来自蒸馏塔的底部产物通入第二蒸馏塔，并且从其底部的富集区除去含有乙酸乙酯的侧流，其中所有或一些来自第二蒸馏塔的底部产物主要由 乙酸，用于洗涤柱中的洗涤。 第二蒸馏塔的顶部蒸气被冷却。 将由此形成的冷凝物的有机相的一部分与在洗涤塔中作为底部产物获得的乙酸溶液一起进入可以具有中间塔盘的第三蒸馏塔。 将第三蒸馏塔的底部产物送入第四蒸馏塔。 在第四蒸馏塔的顶部除去纯乙酸乙烯酯。

    Process for separating water from mixtures thereof with vinyl acetate and acetic acid
    17.
    发明授权
    Process for separating water from mixtures thereof with vinyl acetate and acetic acid 失效
    从乙酸乙烯酯和乙酸与其混合物中分离水的方法

    公开(公告)号：US4353783A

    公开(公告)日：1982-10-12

    申请号：US201752

    申请日：1980-10-29

    申请人： Gunter Roscher ,  Karl-Heinz Schmidt ,  Horst Langner ,  Hermann Neu ,  Aladar Lienerth ,  Dominik Dempf ,  Klaus Kaiser

    发明人： Gunter Roscher ,  Karl-Heinz Schmidt ,  Horst Langner ,  Hermann Neu ,  Aladar Lienerth ,  Dominik Dempf ,  Klaus Kaiser

    IPC分类号： C07C67/055 ,  C07C67/54 ,  C07C69/15 ,  B01D3/36

    CPC分类号： C07C67/055 ,  C07C67/54 ,  B01J2219/1942

    摘要： Process for separating water from a gas mixture, obtained in the manufacture of vinyl acetate by reacting ethylene with acetic acid and oxygen in contact with catalysts containing palladium or palladium compounds in the gaseous phase said gas mixture consisting essentially of acetic acid, vinyl acetate, water, carbon dioxide and ethylene, wherein(a) the gas mixture leaving the reaction zone is condensed to give a condensate containing the major portion of acetic acid, vinyl acetate and water and(b) an acetic acid solution containing the residual amount of vinyl acetate and water being prepared by absorption of the non-condensed gas in acetic acid, is characterized in that(c) the condensate obtained in step (a) and the solution obtained in step (b) are introduced separately from each other into the same distillation column, the feeding point of the condensate being above the feeding point of the solution, the water is distilled off at the head of said column as azeotrope together with the vinyl acetate and(d) the water phase is removed from the distillate separating into a water phase and a vinyl acetate phase.

    摘要翻译： 从气相混合物中分离水的方法，所述气体混合物是通过使乙烯与乙酸和氧气在气相中与含有钯或钯化合物的催化剂接触而在乙酸乙烯酯的制备中获得的，所述气体混合物主要由乙酸，乙酸乙烯酯，水 ，二氧化碳和乙烯，其中（a）离开反应区的气体混合物被冷凝，得到含有主要部分的乙酸，乙酸乙烯酯和水的冷凝物和（b）含有残留量的乙酸乙烯酯的乙酸溶液 和通过在乙酸中吸收非冷凝气体制备的水，其特征在于（c）将步骤（a）中获得的冷凝物和步骤（b）中获得的溶液彼此分开引入相同的蒸馏 柱，冷凝水的进料点高于溶液的进料点，水在所述塔的头部被蒸馏出来，作为共沸物一起 h乙酸乙烯酯和（d）从分离成水相和乙酸乙烯酯相的馏出物中除去水相。

    Process for the preparation of the non-toxic salts of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one 2,2-dioxide and arrangement for carrying out this process
    20.
    发明授权
    Process for the preparation of the non-toxic salts of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one 2,2-dioxide and arrangement for carrying out this process 失效
    制备6-甲基-3,4-二氢-1,2,3-氧杂噻嗪-4-酮2,2-二氧化物的无毒盐的方法和用于进行该方法的装置

    公开(公告)号：US5744010A

    公开(公告)日：1998-04-28

    申请号：US302807

    申请日：1995-06-19

    申请人： Gunter Roscher ,  Heinz Litterer ,  Axel Engelmann ,  Wolf-Dietmar Kaufmann ,  Bernd Laugwitz ,  Hans-Dietmar Schnabel

    发明人： Gunter Roscher ,  Heinz Litterer ,  Axel Engelmann ,  Wolf-Dietmar Kaufmann ,  Bernd Laugwitz ,  Hans-Dietmar Schnabel

    IPC分类号： C07D291/06 ,  B01D11/00 ,  C07D291/00

    CPC分类号： C07D291/06 ,  Y10S203/17

    摘要： The invention relates to a process for the preparation of acesulfam salts by reaction of salts of amidosulfonic acid with diketene to give a salt of acetoacetamidosulfonic acid (I), ring closure by the action of at least about an equivalent amount of SO.sub.3, at least this ring closure reaction being carried out in the presence of a halogenated, aliphatic hydrocarbon as an inert solvent, treatment of the cyclization product with water and conversion of the resulting acesulfam-H (II) into the form of a non-toxic salt, which comprises, in the work-up by distillation of the resulting crude solvent, after removal of water and low-boilers and recovery of solvent sufficiently pure for reuse in the preparation of compounds (I) and/or (II), directly returning :he remaining, solvent-containing distillation residue, without further purification, into the system downstream of the reaction vessel for carrying out the ring closure reaction.

    摘要翻译： PCT No.PCT / EP93 / 00606 Sec。 371日期：1995年6月19日 102（e）日期1995年6月19日PCT 1993年3月16日PCT公布。 出版物WO93 / 19055 日期1993年9月30日本发明涉及通过酰胺磺酸与双烯酮的盐反应制备乙酰磺胺盐的方法，得到乙酰乙酰氨基磺酸（I）的盐，通过至少约等量的 SO 3，至少该闭环反应在卤化的脂族烃作为惰性溶剂的存在下进行，环化产物用水处理并将所得的乙酰胺-H（II）转化为非 - 其中包括在除去水和低沸点剂后，通过蒸馏所得的粗溶剂进行后处理和回收足够纯的用于制备化合物（I）和/或（II）的溶剂） 直接返回：将剩余的含溶剂的蒸馏残余物不经进一步纯化进入反应容器下游的系统进行闭环反应。