利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

11 条记录 (耗时 0.021 秒)

    Preparation of .epsilon.-caprolactone
    2.
    发明授权
    Preparation of .epsilon.-caprolactone 失效
    ε-己内酯的制备

    公开(公告)号：US4341709A

    公开(公告)日：1982-07-27

    申请号：US150260

    申请日：1980-05-15

    申请人： Willi Hofen ,  Herbert Klenk ,  Gerd Schreyer ,  Otto Weiberg ,  Helmut Waldmann ,  Hermann Seifert ,  Karl-Hermann Reissinger ,  Wolfgang Swodenk

    发明人： Willi Hofen ,  Herbert Klenk ,  Gerd Schreyer ,  Otto Weiberg ,  Helmut Waldmann ,  Hermann Seifert ,  Karl-Hermann Reissinger ,  Wolfgang Swodenk

    IPC分类号： C07D313/04 ,  C07D315/00 ,  C07D313/02

    CPC分类号： C07D315/00

    摘要： A process for the preparation of .epsilon.-caprolactone comprising:(a) reacting cyclohexanone with a solution of perpropionic acid in an organic solvent at a molar ratio of cyclohexanone;perpropionic acid of about 1.1-5:1 at a temperature of about 10.degree. to 80.degree. C. to form a reaction mixture consisting essentially of .epsilon.-caprolactone, propionic acid and organic solvent,(b) distilling the reaction mixture from (a) in a first distillation unit to obtain a distillate comprising the organic solvent and a distillation residue,(c) introducing the distillation residue from (b) at a point into a second distillation unit to obtain a distillate comprising propionic acid and unreacted cyclohexanone, removing from the second distillation unit, separately from one another and at a point below the point of introduction into the second distillation unit, .epsilon.-caprolactone and any high-boiling constituents, and,(d) distilling in a third distillation unit the distillate from (c) to obtain a distillate consisting essentially of propionic acid and a distillation residue comprising a mixture of propionic acid and cyclohexanone.

    摘要翻译： 一种制备ε-己内酯的方法，包括：（a）使环己酮与过丙酸在有机溶剂中的溶液以环己酮的摩尔比约1.1-5:1的约0.1〜5:1的摩尔比在约10℃〜 形成基本上由ε-己内酯，丙酸和有机溶剂组成的反应混合物，（b）在第一蒸馏单元中将反应混合物从（a）中蒸馏，得到包含有机溶剂和蒸馏残余物的馏出物 （c）在一点将来自（b）的蒸馏残余物引入第二蒸馏单元以获得包含丙酸和未反应的环己酮的馏出物，从第二蒸馏单元彼此分离并在低于 引入第二蒸馏装置，ε-己内酯和任何高沸点组分，和（d）在第三蒸馏装置中蒸馏出馏出物（c）得到 基本上由丙酸组成的馏出物和包含丙酸和环己酮的混合物的蒸馏残渣。

    Process for the production of percarboxylic acid solutions in organic solvents
    4.
    发明授权
    Process for the production of percarboxylic acid solutions in organic solvents 失效
    在有机溶剂中生产过羧酸溶液的方法

    公开(公告)号：US4101570A

    公开(公告)日：1978-07-18

    申请号：US425290

    申请日：1973-12-17

    申请人： Manfred Kruger ,  Gerd Schreyer ,  Otto Weiberg

    发明人： Manfred Kruger ,  Gerd Schreyer ,  Otto Weiberg

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

    CPC分类号： C07C407/00 ,  C07C407/003

    摘要： There is provided a continuous process for the production of water free or substantially water free peralkanoic acids with 2 to 4 carbon atoms by reaction of aqueous hydrogen peroxide with an alkanoic acid having 2 to 4 carbon atoms in the presence of acidic catalyst at a mole ratio of hydrogen peroxide to alkanoic acid of 0.5 to 30:1, preferably from 0.8 to 20:1, in a reactor by countercurrent extraction of the reaction solution with an organic solvent, recovery of a substantially water free solution of peralkanoic acid as extract and in a given case, eventually after addition of an additional solvent, dehydration of the extract by azeotropic distillation, the entire aqueous raffinate or a portion thereof is led to an evaporator unit, in which the water brought in with the starting materials and formed during the reaction is distilled off under reduced pressure, whereupon the concentrated raffinate as well as in a given case the non-concentrated portion of the raffinate is returned to the reactor and the reactor is replenished with sufficient aqueous hydrogen peroxide and alkanoic acid that the starting conditions are again produced.

    摘要翻译： 提供了一种通过在酸性催化剂存在下以摩尔比反应生成无水或基本上无水的具有2至4个碳原子的过氧化氢的过氧化氢与具有2至4个碳原子的链烷酸反应的连续方法 的过氧化氢与0.5至30:1，优选0.8至20:1的反应器中，通过用有机溶剂逆流萃取反应溶液，回收基本上无水的作为提取物的过氧烷酸溶液，并在 在给定的情况下，最终在加入另外的溶剂之后，通过共沸蒸馏使提取物脱水，将整个含水萃余液或其一部分导入蒸发器单元，其中引入原料并在反应期间形成的水 在减压下蒸馏掉，因此浓缩的萃余液以及在给定情况下，残液的非浓缩部分被还原为 反应器和反应器用足够的过氧化氢水溶液和链烷酸补充，再次产生起始条件。

    Process for the preparation of propylene oxide
    7.
    发明授权
    Process for the preparation of propylene oxide 失效
    环氧丙烷的制备方法

    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。

    Process for the preparation of perpropionic acid solutions
    8.
    发明授权
    Process for the preparation of perpropionic acid solutions 失效
    制备过丙酸溶液的方法

    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。

    Process for the preparation of propylene oxide
    10.
    发明授权
    Process for the preparation of propylene oxide 失效
    环氧丙烷的制备方法

    公开(公告)号：US4113747A

    公开(公告)日：1978-09-12

    申请号：US678822

    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

    CPC分类号： C07C409/24 ,  C07C407/00 ,  C07C407/003 ,  C07D301/14

    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 , 12), and following drying of the benzene solution (16), the perpropionic acid in the solution is reacted with propylene (18) 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 (25, 27, 31, 33), and the latter two are recycled. In the benzene extraction (5, 12), an aqueous raffinate (7) is formed containing hydrogen peroxide and acid catalyst. Water is removed from the aqueous raffinate (8) and the concentrate is recycled to the propionic acid reactor. Make-up hydrogen peroxide can be added to the aqueous raffinate before the removal of water.

    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（5,12）中萃取，过丙酸被吸收，然后在苯溶液（16）干燥后，将溶液中的过丙酸与丙烯（18）反应，将丙烯氧化成环氧丙烷并转化 的过丙酸回到丙酸。 处理反应混合物以分离环氧丙烷，丙酸和苯（25,27,31,33），后两者被再循环。 在苯提取（5,12）中，形成含有过氧化氢和酸催化剂的残液水溶液（7）。 水从残液（8）中除去，浓缩物再循环到丙酸反应器中。 在除去水之前，可以将补充过氧化氢加入含水残液中。