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    Recovery of caprolactam from oligomers and/or polymers of caprolactam
    1.
    发明授权
    Recovery of caprolactam from oligomers and/or polymers of caprolactam 失效
    从己内酰胺的低聚物和/或聚合物中回收己内酰胺

    公开(公告)号：US5700358A

    公开(公告)日：1997-12-23

    申请号：US396623

    申请日：1995-03-01

    申请人： Hugo Fuchs ,  Josef Ritz ,  Gerald Neubauer

    发明人： Hugo Fuchs ,  Josef Ritz ,  Gerald Neubauer

    IPC分类号： C07D201/12 ,  C07D201/16 ,  C08G69/14 ,  C08G69/46 ,  B01D3/34

    CPC分类号： C07D201/12 ,  C07D201/16

    摘要： Caprolactam is recovered from oligomers and/or polymers of caprolactam by cleavage of oligomers and/or polymers of caprolactam and subsequent working up by distillation of the caprolactam obtained in the cleavage, by a process including (a) cleaving oligomers and/or polymers of caprolactam to obtain an aqueous reaction mixture which contains caprolactam, (b) removing water from the reaction mixture obtained under (a) to obtain a residue, (c) distilling the residue obtained under (b) in an acidic medium and (d) then distilling the distillate in an alkaline medium to obtain caprolactam, or (c') distilling the residue obtained under (b) in an alkaline medium and (d') then distilling the distillate in an acidic medium to obtain caprolactam.

    摘要翻译： 通过裂解己内酰胺的低聚物和/或聚己内酯并随后通过蒸馏在切割中获得的己内酰胺来处理己内酰胺从己内酰胺的低聚物和/或聚合物中回收己内酰胺，方法包括（a）裂解己内酰胺的低聚物和/或聚合物 得到含有己内酰胺的水性反应混合物，（b）从（a）得到的反应混合物中除去水，得到残渣，（c）将酸性介质中的（b）得到的残渣蒸馏，然后蒸馏 在碱性介质中的馏出物得到己内酰胺，或（c'）将在（b）获得的残余物在碱性介质中蒸馏，然后（d'），然后在酸性介质中蒸馏出馏出物，得到己内酰胺。

    Preparation of hydroxylammonium salts
    3.
    发明授权
    Preparation of hydroxylammonium salts 失效
    羟基铵盐的制备

    公开(公告)号：US4889704A

    公开(公告)日：1989-12-26

    申请号：US184085

    申请日：1988-04-20

    申请人： Hugo Fuchs ,  Josef Ritz ,  Erwin Thomas ,  Franz-Josef Weiss

    发明人： Hugo Fuchs ,  Josef Ritz ,  Erwin Thomas ,  Franz-Josef Weiss

    IPC分类号： B01J23/42 ,  C01B21/14

    CPC分类号： C01B21/1418

    摘要： Hydroxylammonium salts are prepared by catalytic reduction of nitrogen monoxide with hydrogen at elevated temperature in a dilute aqueous solution of a mineral acid in the presence, in suspension, of a supported platinum catalyst obtainable by precipitating metallic platinum from an aqueous platinum solution onto a support by means of a reducing agent in the presence of an organic chelating agent and partially poisoned with sulfur.

    摘要翻译： 羟基铵盐通过在无水酸的稀的水溶液中在氢气的一个一氧化碳中催化还原一氧化氮，在悬浮液中存在的载体铂催化剂存在下，通过将金属铂从铂水溶液中沉淀到载体上而得到 在有机螯合剂存在下还原剂并用硫部分中毒的还原剂的方法。

    Preparation of pure hydroxylammonium salts of fatty acids of 1 to 4 carbon atoms
    4.
    发明授权
    Preparation of pure hydroxylammonium salts of fatty acids of 1 to 4 carbon atoms 失效
    制备1至4个碳原子的脂肪酸的纯羟基铵盐

    公开(公告)号：US4837362A

    公开(公告)日：1989-06-06

    申请号：US3658

    申请日：1987-01-15

    申请人： Hugo Fuchs ,  Franz-Josef Weiss

    发明人： Hugo Fuchs ,  Franz-Josef Weiss

    IPC分类号： C07C53/08 ,  C07C51/00 ,  C07C51/41 ,  C07C51/43 ,  C07C53/122 ,  C07C67/00

    CPC分类号： C07C51/412

    摘要： Pure hydroxylammonium salts of fatty acids of 1 to 4 carbon atoms are prepared by reacting hydroxylammonium sulfate and alkali metal salts of fatty acids with 1 to 4 carbon atoms in solution at elevated temperatures and separating off the hydroxylammonium salts of fatty acids of 1 to 4 carbon atoms by(a) reacting hydroxylammonium sulfate and alkali metal salts of fatty acids of 1 to 4 carbon atoms in solution in water or alkanols of 1 to 3 carbon atoms or mixtures thereof at 20.degree.-70.degree. C.,(b) evaporating the solvent out of the reaction mixture to obtain a dry residue,(c) isolating the hydroxlammonium salts of fatty acids of 1 to 4 carbon atoms from the dry residue thus obtained by sublimation under reduced pressure.

    摘要翻译： 1〜4个碳原子的脂肪酸的纯羟基铵盐是通过羟基硫酸铵与脂肪酸的碱金属盐在溶液中在高温下反应而制成的，分离出1至4个碳原子的脂肪酸的羟基铵盐 原子通过（a）使羟基硫酸铵和1至4个碳原子的脂肪酸的碱金属盐在1至3个碳原子的水或链烷醇或其混合物的溶液中在20℃-70℃下反应，（b）将 溶剂从反应混合物中得到干燥残余物，（c）从减压升华得到的干燥残余物中分离出1至4个碳原子的脂肪酸的羟基铵盐。

    Purification of frozen crystal layers
    5.
    发明授权
    Purification of frozen crystal layers 失效
    冷冻晶体层的净化

    公开(公告)号：US4795571A

    公开(公告)日：1989-01-03

    申请号：US154227

    申请日：1988-02-10

    申请人： Bernhard Holzknecht ,  Hugo Fuchs ,  Eckhard Hetzel ,  Klaus Wintermantel ,  Peter Thoma

    发明人： Bernhard Holzknecht ,  Hugo Fuchs ,  Eckhard Hetzel ,  Klaus Wintermantel ,  Peter Thoma

    IPC分类号： B01D9/00 ,  B01D9/02 ,  B01D9/04 ,  C07B63/00 ,  C07C67/00 ,  C07C241/00 ,  C07C265/14 ,  C07D201/16

    CPC分类号： C07D201/16 ,  B01D9/0013

    摘要： Frozen crystal layers are purified by a process in which these crystal layers, after they have been frozen out from a melt or solution on a cooling surface, are brought into contact with a purifying liquid and thus purified over their entire thickness, after which the said layers are separated from the purifying liquid and then melted, wherein the temperature of the crystal layers and of the purifying liquid is close to the melting point or solubility temperature, mass transfer at the phase boundary is intensified by forced convection, and this purification is carried out in the course of from 1 to 60 minutes on layers having a thickness of from 0.2 to 10 mm.

    摘要翻译： 冷冻的晶体层通过这些方法纯化，其中这些晶体层在从冷却表面上的熔体或溶液中冷冻出来之后，与净化液体接触并由此在其整个厚度上净化，之后所述 将层与净化液分离，然后熔融，其中晶体层和净化液的温度接近熔点或溶解温度，通过强制对流加强相边界处的质量传递，并进行该纯化 在厚度为0.2至10mm的层上为1至60分钟的过程。

    Preparation of caprolactam
    6.
    发明授权
    Preparation of caprolactam 失效
    己内酰胺的制备

    公开(公告)号：US4268440A

    公开(公告)日：1981-05-19

    申请号：US129827

    申请日：1980-03-13

    申请人： Joachim Werther ,  Hugo Fuchs ,  Uwe Brand ,  Friedrich R. Faulhaber

    发明人： Joachim Werther ,  Hugo Fuchs ,  Uwe Brand ,  Friedrich R. Faulhaber

    IPC分类号： C07B61/00 ,  C07D201/04

    CPC分类号： C07D201/04

    摘要： A process for the preparation of caprolactam wherein, in a first stage, cyclohexanone-oxime is vaporized, in the presence of inert gases, by bringing it into contact with a fluidized bed of inert solid particles at from 150.degree. to 250.degree. C., and the mixture of cyclohexanone-oxime vapor and inert gases is passed into a second stage, where the cyclohexanone-oxime is rearranged to caprolactam at from 230.degree. to 450.degree. C. over a supported catalyst, containing boron trioxide, in a fluidized bed.

    摘要翻译： 一种制备己内酰胺的方法，其中在惰性气体存在下，在第一阶段将环己酮 - 肟气化，使其与150℃至250℃的惰性固体颗粒流化床接触， 并将环己酮 - 肟蒸气和惰性气体的混合物进入第二阶段，其中环己酮 - 肟在230℃至450℃下在含有三氧化硼的负载催化剂上在流化床中重排为己内酰胺。

    Obtaining caprolactam by cleavage of molten polycaprolactam
    8.
    发明授权
    Obtaining caprolactam by cleavage of molten polycaprolactam 失效
    通过熔融聚己内酰胺的裂解获得己内酰胺

    公开(公告)号：US5536831A

    公开(公告)日：1996-07-16

    申请号：US355285

    申请日：1994-12-12

    申请人： Michael Kopietz ,  Alan Handerman ,  Simon Jones ,  Ulrich Kalck ,  Claus-Ulrich Priester ,  Heinz Auer ,  Josef Ritz ,  Hugo Fuchs ,  Paul Pijl

    发明人： Michael Kopietz ,  Alan Handerman ,  Simon Jones ,  Ulrich Kalck ,  Claus-Ulrich Priester ,  Heinz Auer ,  Josef Ritz ,  Hugo Fuchs ,  Paul Pijl

    IPC分类号： B01J8/10 ,  C07D201/12 ,  C08G69/14 ,  C08J11/16

    CPC分类号： C07D201/12

    摘要： Caprolactam is obtained from caprolactam-containing polymers in the presence of a base under reduced pressure by depolymerizing polymers which contain the repeating unit --[--N(H)--(CH.sub.2).sub.5 --C(O)--] or mixtures consisting essentially offrom 50 to 99.99% by weight of a polymer containing the repeating unit --[--N(H)--(CH.sub.2).sub.5 --C(O)--]--from 0.01 to 50% by weight of additives selected from the group consisting of inorganic fillers, organic and inorganic pigments and dyes,from 0 to 10% by weight of organic and/or inorganic additives,from 0 to 40% by weight of non-polyamide-containing polymers andfrom 0 to 20% by weight of polyamides, with the exception of polycaprolactam and copolyamides prepared from caprolactam,in at least two depolymerization reactors connected in series.

    摘要翻译： 己内酰胺通过在碱存在下在减压下由含有重复单元 - [ - N（H） - （CH 2）5 -C（O） - ]的聚合物或基本上由 50至99.99重量％的含有重复单元的聚合物 - [ - N（H） - （CH 2）5 -C（O） - ] - 0.01至50重量％的选自无机填料 有机和无机颜料和染料，0至10重量％的有机和/或无机添加剂，0至40重量％的非聚酰胺聚合物和0至20重量％的聚酰胺，其中 在由至少两个解聚反应器串联连接的己内酰胺制备的聚己内酰胺和共聚酰胺的例外。