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    Preparation of .epsilon.-caprolactone
    25.
    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。

    Production of .omega.-formyl carboxylic acid esters
    27.
    发明授权
    Production of .omega.-formyl carboxylic acid esters 失效
    生产“7-甲酰基羧酸酯”

    公开(公告)号：US4013709A

    公开(公告)日：1977-03-22

    申请号：US651989

    申请日：1976-01-23

    申请人： Helmut Waldmann ,  Wulf Schwerdtel ,  Wolfgang Swodenk

    发明人： Helmut Waldmann ,  Wulf Schwerdtel ,  Wolfgang Swodenk

    IPC分类号： C07C69/67 ,  C07C67/00

    CPC分类号： C07C69/67

    摘要： A process for the production of an .omega.-formyl carboxylic acid ester, comprising reacting an enol ether of a cyclic ketone with hydrogen peroxide in the presence of at least one catalyst selected from the group consisting of a compound of boron or of a metal of the Fifth or Sixth Secondary Group of the Periodic Table. Advantageously the enol ether has the formula ##STR1## wherein R.sub.1 is alkyl of 1 to about 3 carbon atoms, cycloalkyl of 5 or 6 carbon atoms or phenyl optionally substituted by fluorine, chlorine, alkoxy of 1 to about 3 carbon atoms, cyano or phenyl,n is an integer of about 3 to 10, andR.sub.2 each independently is hydrogen, fluorine, chlorine, cyano, alkoxy of 1 to about 4 carbon atoms, alkyl of 1 to about 6 carbon atoms, cycloalkyl of 5 to 7 carbon atoms or phenyl optionally substituted by fluorine, chlorine, cyano, alkoxy of 1 to about 4 carbon atoms or alkyl of 1 to about 6 carbon atoms,And the catalyst comprises about 15 to 25 mole % based on the hydrogen peroxide of a boron oxide, a boric acid, a salt of a boric acid, a boron halogen compound, a complex boron compound or a boric acid ester of the formula ##STR2## wherein R.sub.4, R.sub.5 and R.sub.6 each independently is alkyl of 1 to about 6 carbon atoms optionally substituted by hydroxyl, fluorine, chlorine, alkoxy of 1 to about 3 carbon atoms or phenyl, cycloalkyl of 5 to 7 carbon atoms or phenyl optionally substituted by fluorine, chlorine or alkyl of 1 to about 3 carbon atoms,Or about 0.01 to 1 mole % of at least one acetate, benzoate, acetylacetonate or naphthenate of a metal of the Fifth or Sixth Group of the Periodic table.

    Process for working up reaction gases during the oxidation HCI to chlorine
    28.
    发明授权
    Process for working up reaction gases during the oxidation HCI to chlorine 失效
    在将HCl氧化成氯气期间加工反应气体的过程

    公开(公告)号：US06387345B1

    公开(公告)日：2002-05-14

    申请号：US08715037

    申请日：1996-09-17

    申请人： Fritz Gestermann ,  Jürgen Schneider ,  Hans-Ulrich Dummersdorf ,  Helmut Härle ,  Franz-Rudolf Minz ,  Helmut Waldmann

    发明人： Fritz Gestermann ,  Jürgen Schneider ,  Hans-Ulrich Dummersdorf ,  Helmut Härle ,  Franz-Rudolf Minz ,  Helmut Waldmann

    IPC分类号： C01B704

    CPC分类号： C01B7/0706 ,  C01B7/04 ,  C01B7/0743

    摘要： In the process for working up the reaction gas consisting of chlorine, hydrogen chloride, oxygen and water vapour produced in a chlorine reactor, the reaction gas leaving the reactor 1 is first cooled until the water of reaction and hydrogen chloride condense in the form of concentrated hydrochloric acid. The concentrated hydrochloric acid is then separated from the reaction gas in a phase separation column 3 and discharged. The remaining reaction gas, from which the substantial proportion of the water and a proportion of the hydrogen chloride has been removed, is then post-dried in a drying tower 6. The post-dried reaction gas consisting of chlorine, oxygen and hydrogen chloride is then compressed to 1 to 30 bar by a compressor 7. In the subsequent stage, the compressed reaction gas is passed through a cooled chlorine recuperator 8, wherein the chlorine is very largely liquefied. Finally, the components of the reaction gas which could not be condensed in the chlorine recuperator 8 are at least partially returned to the reactor 1.

    摘要翻译： 在氯反应器中产生的由氯，氯化氢，氧气和水蒸汽组成的反应气体的处理过程中，首先将离开反应器1的反应气体冷却直到反应水和氯化氢浓缩为浓缩 盐酸。 然后在相分离塔3中将浓盐酸与反应气体分离并排出。 然后将剩余的大部分水和一部分氯化氢除去的剩余反应气体在干燥塔6中进行后干燥。由氯，氧和氯化氢组成的后干燥反应气体是 然后通过压缩机7压缩至1至30巴。在随后的阶段，压缩的反应气体通过冷却的氯气换热器8，其中氯很大程度上是液化的。 最后，在氯气换热器8中不能冷凝的反应气体的组分至少部分地返回到反应器1。