公开(公告)号：US4882430A

公开(公告)日：1989-11-21

申请号：US257274

申请日：1988-10-13

Applicant: Gerald Neubauer ,  Emile De Decker ,  Hugo Fuchs ,  Bernhard Holzknecht ,  Josef Ritz

Inventor： Gerald Neubauer ,  Emile De Decker ,  Hugo Fuchs ,  Bernhard Holzknecht ,  Josef Ritz

IPC: C07D201/16

CPC classification number: C07D201/16

Abstract: Caprolactam is recovered from caprolactam distillation low boilers or high boilers or mixtures thereof by the following steps:(a) crystallizing a low or high boiler or a mixture thereof to form purified capro-lactam crystals and a mother liquor,(b) separating off the purified caprolactam crystals to leave a mother liquor,(c) recycling from 5 to 90% by weight of the mother liquor of stage (b) into stage (a) and transferring the remainder of the mother liquor into the subsequent stage (d),(d) crystallizing the remaining mother liquor portion from stage (c) to form caprolactam crystals and a mother liquor, separating off the caprolactam crystals of stage(e) (d) and recycling the same into stage (a) to leave a mother liquor,(f) recycling from 20 to 99% by weight of mother liquor of stage (e) into stage (d) and channeling out the remainder of the impurity-containing mother liquor of stage (e).

Abstract translation: 通过以下步骤从己内酰胺蒸馏低锅炉或高锅炉或其混合物回收己内酰胺：（a）使低或高锅炉或其混合物结晶以形成纯化的己内酰胺结晶和母液，（b）将 纯化的己内酰胺晶体离开母液，（c）将阶段（b）的母液的5至90重量％循环到阶段（a）中，并将剩余的母液转移到后续阶段（d）中， （d）从阶段（c）中将剩余的母液部分结晶以形成己内酰胺晶体和母液，分离阶段（e）（d）的己内酰胺晶体并将其再循环到阶段（a）中以留下母液 ，（f）将阶段（e）的母液的20至99重量％循环到阶段（d）中，并且引出阶段（e）的含杂质母液的剩余部分。

公开(公告)号：US4737354A

公开(公告)日：1988-04-12

申请号：US8343

申请日：1987-01-29

Applicant: Hugo Fuchs ,  Franz-Josef Weiss ,  Erwin Thomas ,  Josef Ritz

Inventor： Hugo Fuchs ,  Franz-Josef Weiss ,  Erwin Thomas ,  Josef Ritz

IPC: B01J23/00 ,  B01J23/40 ,  C01B21/093 ,  C01B21/14 ,  C01B21/00 ,  C01B21/54

CPC classification number: C01B21/093 ,  C01B21/1418

Abstract: Hydroxylamine-O-sulfonic acid is prepared by(a) reacting hydroxylammonium sulfate with oleum at elevated temperatures,(b) isolating sulfuric acid from the hydroxylamine-O-sulfonic acid formed,(c) diluting the sulfuric acid which was obtained in stage (b) and which still contains hydroxylamino-O-sulfonic acid with water to 2-6N and heating it to 30.degree.-80.degree. C. for 1-10 hours,(d) preparing hydroxylamine by catalytic reduction of nitrogen monoxide with hydrogen using the dilute sulfuric acid from stage (c) in the presence of a noble metal catalyst at elevated temperatures.

Abstract translation: （a）在升高的温度下使羟基硫酸铵与发烟硫酸反应制备羟胺-O-磺酸，（b）从形成的羟胺-O-磺酸中分离出硫酸，（c）稀释在步骤 b），其还含有羟基氨基-O-磺酸与水至2-6N，并加热至30-80℃1-10小时，（d）通过使用氢气将一氧化氮催化还原制备羟胺 在贵金属催化剂存在下，在高温下从阶段（c）稀释硫酸。

公开(公告)号：US4725360A

公开(公告)日：1988-02-16

申请号：US22875

申请日：1987-03-06

Applicant: Hugo Fuchs ,  Erwin Thomas ,  Franz-Josef Weiss ,  Josef Ritz

Inventor： Hugo Fuchs ,  Erwin Thomas ,  Franz-Josef Weiss ,  Josef Ritz

IPC: C02F1/58 ,  B01J39/04 ,  B01J39/05 ,  C01B21/14 ,  C02F1/42

CPC classification number: C01B21/1454 ,  B01J39/043

Abstract: Wastewaters containing hydroxylamine or its salts are worked up by a process in which the said wastewaters are passed over a strongly acidic ion exchanger, after which a 5-15% strength by weight aqueous sulfuric acid is passed over the said ion exchanger and a solution of hydroxylammonium sulfate in aqueous sulfuric acid is obtained.

Abstract translation: 含有羟胺或其盐的废水通过所述废水通过强酸性离子交换剂的方法进行后处理，之后将5-15​​重量％的重量比的硫酸水溶液通过所述离子交换剂， 得到硫酸氢硫酸铵。

公开(公告)号：US4599199A

公开(公告)日：1986-07-08

申请号：US696796

申请日：1985-01-31

Applicant: Hugo Fuchs

Inventor： Hugo Fuchs

IPC: C07D201/08

CPC classification number: C07D201/08

Abstract: Caprolactam is obtained by treating .epsilon.-aminocaproic acid with steam at elevated temperatures in the presence of a catalyst by a process in whcih .epsilon.-aminocaproic acid is introduced into a fluidized alumina bed and treated in the presence of steam at from 290.degree. to 400.degree. C.

Abstract translation: 己内酰胺通过在催化剂存在下在高温下用蒸汽处理ε-氨基己酸获得，其中将ε-氨基己酸引入流化的氧化铝床中并在290°至400°的蒸气存在下进行处理 C。

公开(公告)号：US4301073A

公开(公告)日：1981-11-17

申请号：US160308

申请日：1980-06-17

Applicant: Hugo Fuchs ,  Otto-Alfred Grosskinsky ,  Elmar Frommer ,  Klaus Kartte

Inventor： Hugo Fuchs ,  Otto-Alfred Grosskinsky ,  Elmar Frommer ,  Klaus Kartte

IPC: C07D201/02 ,  C07D201/16 ,  C07D223/10

CPC classification number: C07D201/16

Abstract: A process for purifying caprolactam, which has been obtained by a Beckmann rearrangement, by extracting crude caprolactam with solvents, distilling the extract in the presence of alkali, and isolating pure caprolactam, wherein, in a first stage, caprolactam is distilled from the alkaline distillation residue at a bottom temperature of 130.degree.-160.degree. C., and is recycled to the distillation stage, the residue thus obtained is distilled, in a second stage, at a bottom temperature of 140.degree.-180.degree. C., and the distillate is treated with strongly acidic agents in a third stage and is then recycled to the extraction stage.

Abstract translation: 一种通过贝克曼重排获得的己内酰胺的纯化方法，用溶剂萃取粗己内酰胺，在碱存在下蒸馏提取物，并分离纯己内酰胺，其中在第一阶段中，从碱性蒸馏中蒸馏己内酰胺 残余物在130℃-160℃的底部温度下再循环至蒸馏阶段，所得残余物在第二阶段在140-180℃的底部温度下蒸馏，馏出物 在第三阶段用强酸性剂处理，然后再循环至萃取阶段。

公开(公告)号：US4267105A

公开(公告)日：1981-05-12

申请号：US138545

申请日：1980-04-09

Applicant: Uwe Brand ,  Hugo Fuchs ,  Ruediger Schmitz

Inventor： Uwe Brand ,  Hugo Fuchs ,  Ruediger Schmitz

IPC: C07D201/04 ,  C07D201/16

CPC classification number: C07D201/16

Abstract: A process for rapidly cooling gases which contain caprolactam vapor and which have been obtained by catalytic rearrangement of cyclohexanone-oxime in the gas phase in the presence of a supported catalyst containing boric acid, wherein a finely divided coolant at from 90.degree. to 200.degree. C. is fed into a cooling zone from above, gases which are at 330.degree.-400.degree. C. and contain caprolactam vapor are introduced radially at high speed through nozzle orifices over the downstream portion of the cooling zone, and are cooled to 100.degree.-200.degree. C. by thorough mixing with the finely divided coolant, and the cooled mixture is discharged.

Abstract translation: 一种快速冷却含有己内酰胺蒸气的气体的方法，其通过在含有硼酸的负载型催化剂存在下在气相中催化重排环己酮 - 肟而得到，其中在90℃至200℃的细分散的冷却剂 从上方进入冷却区，在330〜-400℃的含有己内酰胺蒸汽的气体通过喷嘴孔径向径向高速地通过冷却区的下游部分被冷却至100℃， 通过与细分散的冷却剂充分混合，并且冷却的混合物被排出。

公开(公告)号：US3941838A

公开(公告)日：1976-03-02

申请号：US438167

申请日：1974-01-30

Applicant: Hugo Fuchs ,  Rudolph Gath ,  Kurt Kahr ,  Klaus Kartte

Inventor： Hugo Fuchs ,  Rudolph Gath ,  Kurt Kahr ,  Klaus Kartte

IPC: B01D20060101 ,  C07C20060101 ,  C07C131/04

CPC classification number: C07C249/14

Abstract: A process for the partial dehydration of cyclohexanone oxime by treatment with aqueous solutions of inorganic salts, wherein the crude cyclohexanone oxime is extracted, above its melting point, with a concentrated ammonium salt solution and/or hydroxylammonium salt solution in countercurrent in an extraction column and the salt solution is then separated from the partly dehydrated cyclohexanone oxime, reconcentrated by evaporation and recycled to the oxime dehydration process. The cyclohexanone oxime melt which has been dehydrated to water contents of about 4 to 6% by weight is treated with a heated inert gas above its melting point and the off-gas is washed to remove entrained cyclohexanone oxime.

Abstract translation: 一种通过用无机盐的水溶液处理来环己酮肟部分脱水的方法，其中将粗环己酮肟在其熔点以上提取，浓缩的铵盐溶液和/或羟基铵盐溶液在提取塔中逆流， 然后将盐溶液与部分脱水的环己酮肟分离，通过蒸发浓缩并再循环至肟脱水过程。 已经脱水至约4〜6重量％的含水量的环己酮肟熔体用高于其熔点的加热惰性气体处理，并将废气洗涤以除去夹带的环己酮肟。

公开(公告)号：US5637700A

公开(公告)日：1997-06-10

申请号：US297719

申请日：1994-08-30

Applicant: Hugo Fuchs ,  Gerald Neubauer ,  Claus-Ulrich Priester

Inventor： Hugo Fuchs ,  Gerald Neubauer ,  Claus-Ulrich Priester

IPC: C07B63/02 ,  C07D201/16 ,  C07D201/12

CPC classification number: C07D201/16

Abstract: Caprolactam is purified by oxidative treatment in which mixtures which essentially contain the caprolactam to be purified and unsaturated lactams are treated with oxygen or an oxygen-containing gas mixture in an alkaline medium.

Abstract translation: 通过氧化处理纯化己内酰胺，其中基本上含有要纯化的己内酰胺和不饱和内酰胺的混合物在碱性介质中用氧或含氧气体混合物处理。

公开(公告)号：US5536831A

公开(公告)日：1996-07-16

申请号：US355285

申请日：1994-12-12

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

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

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

CPC classification number: C07D201/12

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US5496789A

公开(公告)日：1996-03-05

申请号：US224677

申请日：1994-04-07

Applicant: Franz-Josef Weiss ,  Hugo Fuchs ,  Gerald Neubauer ,  Heinz-Walter Schneider

Inventor： Franz-Josef Weiss ,  Hugo Fuchs ,  Gerald Neubauer ,  Heinz-Walter Schneider

IPC: B01J23/40 ,  B01J23/42 ,  B01J27/02 ,  B01J37/18 ,  B01J37/20 ,  C01B21/14

CPC classification number: B01J23/40 ,  B01J23/42 ,  B01J27/02 ,  B01J37/18 ,  B01J37/20 ,  C01B21/1418

Abstract: A hydrogenation catalyst, obtainable by carrying out essentially the following steps:(a) treatment of a platinum metal salt with finely divided sulfur followed by(b) reduction of the platinum metal salt to metallic platinum metal.

Abstract translation: 一种氢化催化剂，可通过基本上进行以下步骤得到：（a）用细碎的硫处理铂金属盐，然后（b）将铂金​​属盐还原为金属铂金属。