公开(公告)号：US4626603A

公开(公告)日：1986-12-02

申请号：US798797

申请日：1985-11-15

申请人： Rainer Siegmeier ,  Gunter Prescher ,  Helmut Maurer

发明人： Rainer Siegmeier ,  Gunter Prescher ,  Helmut Maurer

IPC分类号： C07C27/00 ,  C07C29/10 ,  C07C29/132 ,  C07C31/20 ,  C07C67/00 ,  C07C29/00 ,  C07C35/14

CPC分类号： C07C29/106

摘要： Aliphatic or cyclic epoxides containing 3 to 8 carbon atoms which are present in aromatic hydrocarbons or halohydrocarbons are saponified continuously and directly to vicinal diols without the use of high temperatures and pressures which would otherwise be necessary. The saponification is acid catalyzed.

摘要翻译： 存在于芳香烃或卤代烃中的含有3至8个碳原子的脂环族或环状环氧化物在不使用高温和高压的情况下，连续地直接皂化到邻位二醇上，否则这将是必需的。 皂化是酸催化的。

公开(公告)号：US4608443A

公开(公告)日：1986-08-26

申请号：US694372

申请日：1985-01-24

申请人： Juan Andrade ,  Gunter Prescher ,  Marc Samson

发明人： Juan Andrade ,  Gunter Prescher ,  Marc Samson

IPC分类号： C07C45/42 ,  B01J31/00 ,  B01J31/24 ,  C07B61/00 ,  C07C41/56 ,  C07C45/00 ,  C07C45/49 ,  C07C45/50 ,  C07C45/51 ,  C07C47/12 ,  C07C47/198 ,  C07C67/00

CPC分类号： C07C45/49 ,  C07C41/56 ,  C07C45/515

摘要： The preparation of 1,4-butandial (succindialdehyde) is obtained using acrolein. The acrolein is first converted with an alkanol into 3,3-dialkoxy-1-propene and this is then hydroformylated in the presence of hydridotristriphenylphosphine-rhodiumcarbonyl mixed with triphenylphosphine or triphenylphosphite as the catalyst. The thereby obtained 4,4-dialkoxy-butanal is removed from the hydroformylation product by means of distillation and is then hydrolyzed to 1,4-butandial.

摘要翻译： 使用丙烯醛获得1,4-丁二醛（琥珀醛）的制备。 丙烯醛首先用链烷醇转化为3,3-二烷氧基-1-丙烯，然后在与三苯基膦或亚磷酸三苯酯作为催化剂混合的氢三溴三苯基膦 - 铑羰基存在下加氢甲酰化。 由此得到的4,4-二烷氧基 - 丁醛通过蒸馏从加氢甲酰化产物中除去，然后水解成1,4-丁二醛。

公开(公告)号：US4150241A

公开(公告)日：1979-04-17

申请号：US656591

申请日：1976-02-09

申请人： Gunter Prescher ,  Gerd Schreyer

发明人： Gunter Prescher ,  Gerd Schreyer

IPC分类号： B01D15/04 ,  B01J23/30 ,  B01J23/92 ,  C07C51/00 ,  C07C51/367 ,  C07C51/42 ,  C07C51/47 ,  C07C59/255 ,  C07C67/00 ,  C07D301/12 ,  C07D303/48 ,  C07C59/14

CPC分类号： C07D303/48 ,  B01J23/92 ,  C07C51/367 ,  C07C51/42 ,  C07C51/47 ,  C07C59/255 ,  C07D301/12 ,  Y02P20/584

摘要： Pure racemic acid (dl-tartaric acid) and meso tartaric acid are produced by reaction of an alkali maleate with aqueous hydrogen peroxide in the presence of an alkali tungstate in a process wherein the molar ratio of hydrogen peroxide to maleic acid is greater than 1:1 and the alkali salt of cis-epoxysuccinic acid formed together with the alkali tungstate, in a given case after destroying the excess hydrogen peroxide, are converted to free cis-epoxysuccinic acid and free tungstic acid by leading them over a strongly acidic cation exchanger, whereupon the hydrolysis of the free cis-epoxysuccinic acid to racemic acid and meso-tartaric acid can take place either in the presence of or the absence of the free tungstic acid, whereby the tungstic acid in the case of catalyst free hydrolysis before, and in the case of catalyst containing hydrolysis after this hydrolysis is removed with an anion exchanger and the racemic acid is then in known manner crystallized out of the tungstic acid free hydrolysis mixture by lowering the temperature in a given case with evaporation of water, whereupon the meso-tartaric acid remains in the mother liquor, and there is recovered from the mother liquor either by crystallization or by evaporation to dryness, in a given case in admixture with racemic acid, unreacted cis-epoxysuccinic acid and maleic acid, while the anion exchanger laden with the tungstic acid is regenerated in known manner with dilute aqueous alkali and, in a given case, the resulting solution of alkali tungstate, eventually after treatment with activated carbon is returned directly into the epoxidation step.There is also disclosed a process for the separation of maleic acid from synthetic tartaric acid containing maleic acid in which an aqueous solution of the crude tartaric acid which can also still contain the catalyst used, is led over a basic anion exchanger which is present in the hydroxyl or tartrate form.

摘要翻译： 在碱性钨酸盐的存在下，通过碱金属马来酸盐与过氧化氢水溶液的反应，其中过氧化氢与马来酸的摩尔比大于1：1的方法制备纯外消旋酸（dl-酒石酸）和内消旋酒石酸。 1和与碱式钨酸盐形成的顺式 - 环氧琥珀酸的碱金属盐，在破坏过量的过氧化氢之后的给定情况下，通过使它们通过强酸性阳离子交换剂转化成游离的顺式 - 环氧琥珀酸和游离的钨酸， 因此，游离顺式 - 环氧琥珀酸向外消旋酸和内消旋酒石酸的水解可以在存在或不存在游离钨酸的情况下进行，由此在无催化剂的情况下，钨酸和 在这种水解后含有水解的催化剂的情况用阴离子交换剂除去，然后外消旋酸以已知的方式结晶出不含钨酸的水 通过在给定情况下通过降低水的温度来蒸发混合物，随后蒸发水，此时内消旋酒石酸保留在母液中，并且通过结晶或通过蒸发至干，从母液中回收，在给定情况下为混合物 外消旋酸，未反应的顺式 - 环氧琥珀酸和马来酸，而负载有钨酸的阴离子交换剂以已知的方式用稀碱水溶液再生，在给定的情况下，所得到的碱式钨酸钠溶液最终经过活化处理 碳直接返回到环氧化步骤中。

公开(公告)号：US4137242A

公开(公告)日：1979-01-30

申请号：US678823

申请日：1976-04-28

申请人： Gunter Prescher ,  Gerd Schreyer ,  Otto Weiberg ,  Rolf Wirthwein ,  Helmut Waldmann ,  Hermann Seifert ,  Wulf Schwerdtel ,  Wolfgang Swodenk

发明人： Gunter Prescher ,  Gerd Schreyer ,  Otto Weiberg ,  Rolf Wirthwein ,  Helmut Waldmann ,  Hermann Seifert ,  Wulf Schwerdtel ,  Wolfgang Swodenk

IPC分类号： C07C409/24 ,  C07D301/14 ,  C07D301/32

CPC分类号： C07D301/14 ,  C07C407/00 ,  C07C407/003

摘要： Process for continuous production of propylene oxide (FIG. 1) from propylene and aqueous hydrogen peroxide. The aqueous hydrogen peroxide is first reacted with propionic acid in the presence of acid catalyst to form perpropionic acid (1). The perpropionic acid is taken up by extraction in benzene (5, 18) and following drying of the benzene solution (21), the perpropionic acid in the solution is reacted with propylene (24) for oxidation of the propylene to propylene oxide and conversion of the perpropionic acid back to propionic acid. The reaction mixture is worked up to separate propylene oxide, propionic acid and benzene (30, 32, 37, 39), and the latter two are recycled. In the benzene extraction (5, 18), an aqueous raffinate (7) is formed containing hydrogen peroxide and acid catalyst. The aqueous raffinate can be divided into a stream which is recycled to the propionic acid reactor (1), and a second stream which can be distilled to remove water with the concentrate being recycled to the propionic acid reactor. (1)

摘要翻译： 从丙烯和过氧化氢水溶液连续生产环氧丙烷（图1）的方法。 过氧化氢水溶液首先在酸催化剂存在下与丙酸反应形成过丙酸（1）。 通过在苯（5,18）中萃取并过滤苯溶液（21），将过丙酸吸收，将溶液中的丙酸与丙烯（24）反应，将丙烯氧化成环氧丙烷，并将 过丙酸回到丙酸。 处理反应混合物以分离环氧丙烷，丙酸和苯（30,32,37,39），后两者被再循环。 在苯提取（5,18）中，形成含有过氧化氢和酸催化剂的残液水溶液（7）。 含水萃余液可以分为循环到丙酸反应器（1）的料流，以及可以将浓缩物再循环到丙酸反应器中的蒸馏水以除去水的第二料流。

公开(公告)号：US4087455A

公开(公告)日：1978-05-02

申请号：US678824

申请日：1976-04-28

申请人： Gunter Prescher ,  Gerd Schreyer ,  Helmut Waldmann ,  Wulf Schwerdtel

发明人： Gunter Prescher ,  Gerd Schreyer ,  Helmut Waldmann ,  Wulf Schwerdtel

IPC分类号： C07C67/00 ,  C07C407/00 ,  C07C409/24 ,  C07C409/26 ,  C07C179/10

CPC分类号： C07C407/00 ,  C07C407/003 ,  Y10S203/06 ,  Y10S203/09

摘要： Process for the continuous preparation of organic solutions of percarboxylic acids by reaction of aqueous hydrogen peroxide with the corresponding carboxylic acid in the presence of an acid, water-soluble catalyst, extraction of the resulting reaction mixture with an organic solvent and recycle of the raffinate, containing hydrogen peroxide, after reconcentration by the removal of water by distillation into the reaction. The raffinate is fed, together with the whole of that amount of hydrogen peroxide which essentially to the consumption of hydrogen peroxide in the reaction or with a part thereof, into the distillation for the removal of water. The amount of water which essentially corresponds to the sum of the water of reaction formed during the reaction and the water introduced into the process with the feed products is distilled off under reduced pressure. The sump product, thus obtainable, from the distillation is recycled into the reaction.

摘要翻译： 通过在酸，水溶性催化剂存在下，过氧化氢水溶液与相应的羧酸反应连续制备过羧酸的有机溶液的方法，用有机溶剂萃取所得反应混合物并回收萃余液， 在通过蒸馏除去水进行再浓缩后，含有过氧化氢。 加入萃余液与全部量的过氧化氢一起加入蒸馏水中，该过氧化氢基本上与反应中的过氧化氢或其一部分一起消耗。 基本上对应于在反应期间形成的反应的水和与进料产物一起引入该过程的水的总量的水在减压下蒸馏掉。 从蒸馏得到的贮槽产物被再循环到反应中。

公开(公告)号：US4087454A

公开(公告)日：1978-05-02

申请号：US678821

申请日：1976-04-28

申请人： Gunter Prescher ,  Otto Weiberg ,  Helmut Waldmann ,  Hermann Seifert

发明人： Gunter Prescher ,  Otto Weiberg ,  Helmut Waldmann ,  Hermann Seifert

IPC分类号： C07C67/00 ,  C07C407/00 ,  C07C409/24 ,  C07D301/14 ,  C07C179/10

CPC分类号： C07C407/00

摘要： In the production of perpropionic acid by reaction of hydrogen peroxide and propionic acid in an aqueous medium and in the presence of an acid catalyst, e.g. sulfuric acid, to produce the peracid and water, the danger of explosion is reduced by employing a molar ratio of hydrogen peroxide to propionic acid of less than 1.4:1, a temperature of up to 60.degree. C, and an initial hydrogen peroxide:water ratio of up to 1.2, and a catalyst concentration of 10-40% of weight.

摘要翻译： 在通过过氧化氢和丙酸在水性介质中和在酸催化剂（例如）的存在下反应生产过丙酸。 硫酸，以产生过酸和水，通过使用过氧化氢与丙酸的摩尔比小于1.4:1，温度高达60℃，初始过氧化氢：水，可以降低爆炸危险 比例高达1.2，催化剂浓度为10-40％重量。

公开(公告)号：US5026925A

公开(公告)日：1991-06-25

申请号：US7351

申请日：1987-01-27

申请人： Karl-Heinz Drauz ,  Axel Kleeman ,  Gunter Prescher ,  Gebhard Ritter

发明人： Karl-Heinz Drauz ,  Axel Kleeman ,  Gunter Prescher ,  Gebhard Ritter

IPC分类号： C07B61/00 ,  B01J27/00 ,  C07C27/00 ,  C07C37/60 ,  C07C39/08 ,  C07C67/00

CPC分类号： C07C37/60

摘要： The nuclear hydroxylation of phenol can be carried out in an industrially very simple manner and with at least the yields obtained with the known methods as well as with very good selectivities by means of using aqueous hydrogen peroxide with the simultaneous addition of sulfur dioxide or selenium dioxide as catalyst.

摘要翻译： 苯酚的核羟基化可以工业上非常简单的方式进行，至少用已知方法获得的产率，以及通过使用过氧化氢水溶液，同时加入二氧化硫或二氧化硒，具有非常好的选择性 作为催化剂。

公开(公告)号：US4825011A

公开(公告)日：1989-04-25

申请号：US128605

申请日：1987-12-04

申请人： Karl-Heinz Drauz ,  Axel Kleeman ,  Gunter Prescher ,  Gebhard Ritter

发明人： Karl-Heinz Drauz ,  Axel Kleeman ,  Gunter Prescher ,  Gebhard Ritter

IPC分类号： B01J27/02 ,  C07B31/00 ,  C07B41/02 ,  C07B61/00 ,  C07C27/00 ,  C07C37/60 ,  C07C39/08 ,  C07C41/00 ,  C07C41/26 ,  C07C43/23 ,  C07C67/00

CPC分类号： C07C41/26 ,  C07C37/60

摘要： The nuclear hydroxylation of substituted phenols is performed by using aqueous hydrogen peroxide in the presence of sulfur dioxide or selenium dioxide as catalyst in a simple manner with very good space-time yields and good product yields.

摘要翻译： 取代酚的核羟基化是通过在二氧化硫或二氧化硒作为催化剂的存在下以过氧化氢水溶液的方式进行的，具有非常好的时空收率和良好的产物产率。

公开(公告)号：US4790949A

公开(公告)日：1988-12-13

申请号：US168996

申请日：1988-03-16

申请人： Manfred Dankowski ,  Thomas Lieser ,  Gunter Prescher ,  Wolfgang Leonhardt

发明人： Manfred Dankowski ,  Thomas Lieser ,  Gunter Prescher ,  Wolfgang Leonhardt

IPC分类号： C11D3/395 ,  C11D3/12 ,  C11D3/39 ,  D06L3/02 ,  C11D7/20 ,  C11D7/38

CPC分类号： C11D3/124 ,  C11D3/3947

摘要： Aqueous bleaching agent suspensions based on a water-insoluble peroxycarboxylic acid suspended in a carrier liquid in the presence of a colloidal silicic acid and of an acidifying agent which exhibit, in comparision to known suspensions with this base, an improved storage resistance and are more economical to prepare. This result is achieved by means of pourable-to-pasty bleaching agent suspensions which contain 0.1 to 9% by weight silicic acid in relation to the suspension and contain a hydrate-forming neutral salt which desensitizes peroxycarboxylilc acids, in an amount of 10 to 400% by weight, calculated hydrate-free and in relation to peroxycarboxylic acid added. Preferred bleaching agent suspensions contain 10-30% by weight diperoxydodecanedioic acid, 5-20% by weight sodium sulfate and 2 to 6% by weight pyrogenic silicic acid, each in relation to the suspension. The use of non-dried, hydrophilized and optionally in situ-desensitized peroxycarboxylic acids is especially preferred.The preparation of the bleaching agents is performed by homogeneously suspending the peroxycarboxylic acid in the thickened carrier liquid. The storage-resistant bleaching agent suspensions find application as laundry bleaching agents and for the preparation of cleaning and disinfecting agents.

摘要翻译： 基于在胶态硅酸和酸化剂存在下悬浮在载体液体中的水不溶性过氧羧酸的水性漂白剂悬浮液，与已知的该基质悬浮液相比，其具有改善的储存阻力并且更经济 准备。 该结果是通过可倾倒的糊状漂白剂悬浮液来实现的，该悬浮液含有相对于悬浮液为0.1-9重量％的硅酸，并且含有水合物形成中性盐，其使过氧羧酸脱离，其量为10-400 重量％，计算出的无水合物和相对于加入的过氧羧酸。 优选的漂白剂悬浮液含有10-30重量％的二过氧十二烷二酸，5-20重量％的硫酸钠和2至6重量％的致热硅酸，各自相对于悬浮液。 使用非干燥，亲水化和任选的原位脱敏过氧羧酸是特别优选的。 漂白剂的制备通过使过氧羧酸均匀地悬浮在增稠的载体液中进行。 耐贮存的漂白剂悬浮液可用作洗衣漂白剂并用于制备清洁和消毒剂。

公开(公告)号：US4048225A

公开(公告)日：1977-09-13

申请号：US660789

申请日：1976-02-24

申请人： Gunter Prescher ,  Gerd Schreyer

发明人： Gunter Prescher ,  Gerd Schreyer

IPC分类号： C07C59/245 ,  B01J23/00 ,  B01J23/92 ,  B01J31/00 ,  C07B61/00 ,  C07C51/00 ,  C07C51/367 ,  C07C51/43 ,  C07C51/47 ,  C07C59/255 ,  C07C67/00 ,  C07D303/48 ,  C07C59/14

CPC分类号： C07D303/48 ,  B01J23/92 ,  C07C51/367 ,  C07C51/43 ,  C07C51/47 ,  C07C59/255 ,  Y02P20/584

摘要： Pure racemic acid (dl-tartaric acid) and meso tartaric acid are produced by reaction of an alkali maleate with aqueous hydrogen peroxide in the presence of a catalyst which is an alkali molybdate or a mixture of an alkali molybdate and alkali tungstate in a process wherein the molar ratio of hydrogen peroxide to maleic acid is greater than 1:1 and the alkali salt of cis-epoxysuccinic acid formed together with the catalyst in a given case after destroying the excess hydrogen peroxide and other peroxygen compounds, are converted to free cis-epoxysuccinic acid and free molybdic acid or mixture of free molybdic acid and free tungstic acid by leading them over a strongly acidic cation exchanger, whereupon the hydrolysis of the free cis-epoxysuccinic acid to racemic acid and meso-tartaric acid can take place either in the presence of or the absence of the free molybdic acid or mixture of free molybdic acid and free tungstic acid, whereby the catalyst in the case of catalyst free hydrolysis before, and in the case of catalyst containing hydrolysis after this hydrolysis is removed with an anion exchanger and the racemic acid is then in known manner crystallized out of the catalyst free hydrolysis mixture by lowering the temperature in a given case with evaporation of water, whereupon the meso-tartaric acid remains in the mother liquor, and there is recovered from the mother liquor either by crystallization or by evaporation to dryness, in a given case in admixture with racemic acid, unreacted cis-epoxysuccinic acid and maleic acid, while the anion exchanger laden with the molybdic acid or mixture of molybdic acid and tungstic acid is regenerated in known manner with dilute aqueous alkali and, in a given case, the resulting solution of alkali molybdate or mixture of alkali molybdate and alkali tungstate, eventually after treatment with activated carbon is returned directly into the epoxidation step.

摘要翻译： 通过碱金属马来酸盐与过氧化氢水溶液在催化剂的存在下，在碱金属钼酸盐或碱金属钼酸盐和碱金属钨酸盐的混合物存在下，制备纯外消旋酸（dl-酒石酸）和内消旋酒石酸， 过氧化氢与马来酸的摩尔比大于1:1，而在过去的过氧化氢和其他过氧化合物破坏之后，在给定情况下与催化剂一起形成的顺式环氧琥珀酸的碱式盐转化为游离的顺式 - 环氧琥珀酸和游离钼酸或游离钼酸和游离钨酸的混合物通过引导它们在强酸性阳离子交换剂上，由此将游离顺式 - 环氧琥珀酸水解成外消旋酸和内消旋酸 - 酒石酸可以在 存在或不存在游离钼酸或游离钼酸和游离钨酸的混合物，从而在催化剂自由水解的情况下催化剂b 之前，并且在用水解阴离子交换剂除去水解后的催化剂的情况下，然后以已知的方式将外消旋酸从无催化剂的水解混合物中结晶出来，在给定的情况下通过降低水的温度在水中蒸发， 中间酒石酸保留在母液中，通过结晶或通过蒸发至干，从母液中回收，在给定情况下与外消旋酸，未反应的顺式 - 环氧琥珀酸和马来酸混合，而阴离子 以钼酸或钼酸和钨酸的混合物的交换剂以已知的方式用稀碱水再生，在给定情况下，所得到的钼酸碱盐或钼酸碱盐和碱金属钨酸盐的混合物最终经活化后处理 碳直接返回到环氧化步骤中。