公开(公告)号：US4968793A

公开(公告)日：1990-11-06

申请号：US468935

申请日：1990-01-23

Applicant: Masaru Kitamura ,  Hiroshi Ichihashi ,  Gohfu Suzukamo ,  Yasuo Nakamura

Inventor： Masaru Kitamura ,  Hiroshi Ichihashi ,  Gohfu Suzukamo ,  Yasuo Nakamura

IPC: C07D201/04

CPC classification number: C07D201/04

Abstract: .epsilon.-caprolactam is produced by gas phase reaction of cyclohexanone oxime using a solid acid as a catalyst in the presence of a compound represented by the formula (I): R.sub.1 --O--R.sub.2 (wherein R.sub.1 represents a lower alkyl group which may be substituted with a fluorine atom and R.sub.2 represents a hydrogen atom, a lower alkyl group or a phenyl group) such as a lower alcohol or an ether compound. The solid acid includes a crystalline metallosilicate or a crystalline silicate.

公开(公告)号：US4883915A

公开(公告)日：1989-11-28

申请号：US35868

申请日：1987-04-08

Applicant: Patrick E. McMahon

Inventor： Patrick E. McMahon

IPC: C07D201/04

CPC classification number: C07D201/04

Abstract: A process for the catalyzed conversion fo oximes such as cyclohexanone oxime to amides such as caprolactam via a high conversion, high selectivity, long catalyst lifetime reaction over a HAMS-1B crystalline borosilicate-based catalyst composition.

Abstract translation: 通过HAMS-1B结晶硼硅酸盐基催化剂组合物的高转化率，高选择性，长的催化剂寿命反应，催化转化如环己酮肟向酰胺如己内酰胺转化的方法。

公开(公告)号：US4789741A

公开(公告)日：1988-12-06

申请号：US165234

申请日：1988-03-07

Applicant: Francesco Cellini ,  Vittorio Gervasutti ,  Raffaele Tancorra ,  Sergio Tonti

Inventor： Francesco Cellini ,  Vittorio Gervasutti ,  Raffaele Tancorra ,  Sergio Tonti

IPC: B01J19/26 ,  C07D201/04

CPC classification number: C07D201/04 ,  B01J19/26 ,  B01J2219/00119

Abstract: The invention concerns a two-step process for the synthesis of caprolactam by reaction of cylcohexanone-oxime with an excess of oleum, carried out in a first step with only a portion of the oxime and in the presence of liquid SO.sub.2, according to usual "cold" techniques, the amount of free SO.sub.3 in the oleum being equal to or greater than 50% by weight, wherein said "cold" step is completed by a second "hot" step, by adding a second portion of oxime, the ratio between said second portion and said first portion ranging from 0.5 to 1.2.

公开(公告)号：US4709024A

公开(公告)日：1987-11-24

申请号：US896008

申请日：1986-08-13

Applicant: Hiroshi Sato ,  Kenichi Hirose ,  Norio Ishii ,  Youichi Umada

Inventor： Hiroshi Sato ,  Kenichi Hirose ,  Norio Ishii ,  Youichi Umada

IPC: B01J25/00 ,  B01J29/035 ,  B01J29/40 ,  B01J29/70 ,  C07B61/00 ,  C07D201/04

CPC classification number: C07D201/04 ,  Y02P20/52

Abstract: .epsilon.-caprolactam is prepared by gas phase catalytic synthesis in which cyclohexanone oxime is brought into contact with crystalline alluminosilicate, for example, ZSM-5 H.sup.+ form) having 1-12 of constraint index, 500 or more, preferably 1000 or more, of Si/Al atomic ratio and 5.mu. equivalent/g or less, preferably 2.mu. equivalent/g, of external acid amount.

Abstract translation: ε-己内酰胺通过气相催化合成法制备，其中环己酮肟与具有1-12约束指数的结晶二硅铝酸盐例如ZSM-5 H +形式接触，其中500重量％以上，优选1000个以上的Si /原子比，5当量/ g以下，优选为2当量/ g的外部酸量。

公开(公告)号：US3776901A

公开(公告)日：1973-12-04

申请号：US3776901D

申请日：1968-04-01

Applicant: GULF RESEARCH DEVELOPMENT CO

Inventor： KELLY K ,  MATTHEWS J

IPC: C07D201/04 ,  C07D41/06

CPC classification number: C07D201/04

Abstract: A METHOD FOR CONVERTING A KETOXIME TO AN N-SUBSTITUTED AMIDE BY REACTING A KETOXIME WITH A COMPLEX OF AN NSUBSTITUTED CARBOXYLIC ACID AMIDE AND SULFUR TRIOXIDE TO FORM A NOVEL COMPOUND OF THE KETOXIME, CARBOXYLIC ACID AMIDE AND SULFUR TRIOXIDE AND DECOMPOSING THIS COMPOUND TO PRODUCE AN N-SUBSTITUTED AMIDE CORRESPONDING TO THE KETOXIME. CYCLOHEXANONE OXIME IS CONVERTED TO CAPROLACTAM.

公开(公告)号：US3767647A

公开(公告)日：1973-10-23

申请号：US3767647D

申请日：1971-01-11

Applicant: TOA GOSEI CHEM IND

Inventor： HIROSE T ,  MATSUBARA T

IPC: C07D201/04 ,  C07D41/00

CPC classification number: C07D201/04

Abstract: A HIGH PURITY W-LAUROLACTAM IS PREPARED FROM A CRUDE CYCLODODECANONE OXIME CONTAINING 5% BY WEIGHT OR LESS OF CYCLODODECANONE BY SUBJECTING THE OXIME TO THE BECKMANN REARRANGEMENT REACTION IN THE PRESENCE OF SULFURIC ACID HAVING A CONCENTRATION OF 98% BY WEIGHT OR MORE OR FUMING SULFURIC ACID CONTAINING 20% BY WEIGHT OR LESS OF SULFURIC-ANHYDRIDE, SEPARATING THE THUS FORMED W-LAUROLACTAM FROM THE REACTION MIXTURE, DISSOLVING THE RESULTING W-LAUROLACTAM N A LIQUID AROMATIC HYDROCARBON, WASHING THE SOLUTION WITH AN ALKALI SOLUTION AT A TEMPERATURE OF 60* TO 120* C., AND RECOVERING W-LAUROLACTAM.

公开(公告)号：US3757007A

公开(公告)日：1973-09-04

申请号：US3757007D

申请日：1971-08-10

Applicant: KANEGAFUCHI SPINNING CO LTD

Inventor： DEGUCHI S ,  FUJITA I ,  YONEYA T

IPC: C07C67/00 ,  C07C239/00 ,  C07C251/46 ,  C07D201/02 ,  C07D201/04 ,  C07D41/06

CPC classification number: C07D201/02 ,  C07D201/04

Abstract: A PROCESS FOR PRODUCING E-CAPROLACTAM AND O-ACETYLCYCLOHEXANONE OXIME COMPRISING REACTING 0.01 TO 100 MOLS OF CYCLOHEXANONE OXIME WITH ONE MOL OF N-ACETYLCAPROLACTAM AT A TEMPERATURE OF 30 TO 120*C. FOR 10 MINUTES TO 100 HOURS IN THE PRESENCE OF AN AORGANIC SOLVENT IN AN AMOUNT OF 0 TO 20 TIMES THE TOTAL WEIGHT OF N-ACETYLCAPROLACTAM AND CYCLOHEXANONE OXIME.

公开(公告)号：US3428625A

公开(公告)日：1969-02-18

申请号：US3428625D

申请日：1966-09-23

Applicant: HUELS CHEMISCHE WERKE AG

Inventor： STRAUSS GUNTHER

IPC: C07D201/04 ,  C07D41/06

CPC classification number: C07D201/04

公开(公告)号：US3318871A

公开(公告)日：1967-05-09

申请号：US3318871D

CPC classification number: C07D201/04

公开(公告)号：US3080357A

公开(公告)日：1963-03-05

申请号：US3080357D

CPC classification number: C07D201/04