公开(公告)号：US4031139A

公开(公告)日：1977-06-21

申请号：US652421

申请日：1976-01-26

Applicant: Guenther Rapp ,  Hugo Fuchs ,  Erwin Thomas

Inventor： Guenther Rapp ,  Hugo Fuchs ,  Erwin Thomas

IPC: C07D223/08 ,  C07C67/00 ,  C07C239/00 ,  C07C251/46 ,  C07D201/04 ,  C07D223/10 ,  C07C131/04

CPC classification number: C07D201/04

Abstract: An improved process for the manufacture of cyclohexanone oxime by reacting cyclohexanone with an aqueous hydroxylammonium-ammonium sulfate solution at temperatures above the melting point of cyclohexanone oxime by the countercurrent process, the improvement consisting in that the reaction is carried out in the absence of solvents and neutralizing and/or buffer salts at pHs of up to 0.5 until equilibrium is reached, the oximes resulting during the reaction being separated from the aqueous phase and the aqueous phase being extracted with cyclohexanone and then subjected to steam distillation.

Abstract translation: 通过逆流法在环己酮肟的熔点以上的温度下使环己酮与羟基铵 - 硫酸铵水溶液反应制备环己酮肟的改进方法，其改进在于反应在不存在溶剂的情况下进行， 中和和/或缓冲盐的pH值高达0.5，直到达到平衡，反应中产生的肟与水相分离，水相用环己酮萃取，然后进行蒸汽蒸馏。

公开(公告)号：US3954736A

公开(公告)日：1976-05-04

申请号：US84546

申请日：1970-10-27

Applicant: Norbert Petri

Inventor： Norbert Petri

IPC: B01J8/24 ,  C07B61/00 ,  C07D201/04

CPC classification number: C07D201/04

Abstract: Continuous production of lactams by rearrangement of cycloalkanone oximes at from 210.degree. to 450.degree.C in contact with a supported catalyst in a fluidized bed wherein from 0.01 to 1 kg of steam is introduced above the fluidized bed for each kg of cycloalkanone oxime supplied. Lactams are starting materials for the production of synthetic polyamides suitable for fibers.

Abstract translation: 通过在210℃至450℃下重新排列与负载型催化剂接触的流化床中连续生产内酰胺，其中在流化床上将0.01至1kg蒸汽引入每kg供应的环烷酮肟。 内酰胺是用于生产适用于纤维的合成聚酰胺的起始原料。

公开(公告)号：US3904608A

公开(公告)日：1975-09-09

申请号：US39471473

申请日：1973-09-06

Applicant: TORAY INDUSTRIES

Inventor： TAKAYANAGI KAZUO ,  SONODA TAKESHI

IPC: C07D223/12 ,  B01J27/00 ,  C07B61/00 ,  C07D201/04

CPC classification number: C07D201/04 ,  Y02P20/52

Abstract: A process for producing lactam by Beckmann rearrangement of cycloalkanone oxime. A cycloalkanone oxime is contacted at an elevated temperature, with sulfate or phosphate of metal ions selected from manganese, ferrous, ferric, cobalt, nickel, zinc and cadmium in the presence of at least one mole of hydrogen chloride per mole of the cycloalkanone oxime. Lactam can be recovered from the reaction mixture without producing ammonium sulfate as a by-product.

公开(公告)号：US3850910A

公开(公告)日：1974-11-26

申请号：US30172672

申请日：1972-10-30

Applicant: STAMICARBON

Inventor： GOETTSCH R ,  VOS H

IPC: C07D201/04 ,  C07D201/16 ,  C07D41/06

CPC classification number: C07D201/04 ,  C07D201/16

Abstract: 1. IN A PROCESS FOR THE RECOVERY PURE E-CAPROLACTAM CONTAINING LESS THAN 5 MEQ. OF IONOGENIC SUBSTANCES PER KG. OF LACTAM, OBTAINED BY INTRAMOLECULAR CONVERSION OF CYCLOHEXANONE OXIME WITH THE AID OF AN ACID CATALYST FROM THE GROUP CONSISTING OF SULFURIC ACID, OLEUM AND SULPHUR TRIOXIDE, AND EXTRACTION OF THE REACTION MIXTURE AFTER DILUTION WITH WATER AND, OPTIONALLY AFTER PARTIAL NEUTRALIZATION OF THE SULPHURIC ACID, WITH A WATER-IMMISCIBLE ORGANIC SOLVENT FOR THE LACTAM, THE IMPROVEMENT COMPRISING NEUTRALIZING THE RESULTING SOLVENT OF LACTAM IN THE ORGANIC SOLVENT WITH AQUEOUS AMMONIA TO A PH OF AT LEAST 4.5 (MEASURED AT 20* C.), THEREBY FORMING AN EMULSION OF AN AQUEOUS 15-40% WT. AMMONIUM SULPHATE SOLUTION EMULSIFIED IN THE ORGANIC SOLVENT, WASHING THE EMULSION WITH A COUNTERFLOW OF DEMINERALIZED WATER IN A WEIGHT RATIO OF 4-20 PARTS THEREBY REESTRACTING THE LACTAM FROM THE ORGANIC SOLVENT TO PRODUCE AN ECAPROLACTAM SOLUTION WITH LESS THAN 5 MEQ. OF IONOGENIC SUBSTANCES PER KG. OF LACTAM, WHILE THE RESULTING AQUEOUS LACTAM SOLUTION IS EVAPORATED, OPTIONALLY AFTER HAVING BEEN FREED OF ORGANIC IONGENIC COMPOUNDS ON CATION AND ANION EXCHANGERS.

公开(公告)号：US3849335A

公开(公告)日：1974-11-19

申请号：US13149671

申请日：1971-04-05

Applicant: BAYER AG

Inventor： IMMEL O ,  SCHWARZ H

IPC: B01J27/24 ,  B01J31/12 ,  C07D201/04 ,  C07D41/04

CPC classification number: C07D201/04 ,  B01J27/24

Abstract: 1. ABRASION-RESISTANT CATALYST CONTAINING BORIC ACID AND BORON NITRIDE SUITABLE FOR THE PREPARATION OF LACTAMS BY THE REARRANGEMENT OF CYCLIC KETOXIMES CONTAINING 5 TO 12 CARBON ATOMS IN THE RING IN THE GASEOUS PHASE AT A TEMPERATURE OF 200*C, TO 400:C., OBTAINED BY HEATING AT A TEMPERATURE OF 250* TO 900*C. (A) A MIXTURE OF BORIC ACID AND A SUPPORTING MATERIAL OF 1:4 TO 3:2, AND (B) -030% ACID: SUPPORTING MATERIAL OF 1:4 TO 3:2, AND (B) 1-30% BY WEIGHT BASED ON (A) OF A NITROGEN-CONTAINING COMPOUND WHICH FORMS BORON NITRIDE WITH BORIC ACID OR BORON TRIOXIDE SELECTED FROM THE GROUP CONSISTING OF HN4OH, (NH4)2CO3, NH4CL, UREA, GUANIDINE AND THIOUREA.

公开(公告)号：US3632575A

公开(公告)日：1972-01-04

申请号：US3632575D

申请日：1968-07-31

Applicant: BAYER AG

Inventor： MANSMANN MANFRED ,  ZIRNGIBL HANS ,  IMMEL OTTO

IPC: C07D201/04 ,  C07D41/06

CPC classification number: C07D201/04 ,  Y02P20/584

Abstract: IMPROVEMENT IN THE PROCESS FOR THE CATALYTIC REARRANGEMENT OF CYCLIC KETOXIMES TO LACTAMS USING A BORON OXIDE CATALYST, THE CATALYST BEING REGENERATED BY ADDING AN ORTHOBORIC ACID ALKYLESTER WHILE BEING IN THE FLUIDISED STATE AT TEMPERATURES OF FROM 200-800*C.

公开(公告)号：US3592809A

公开(公告)日：1971-07-13

申请号：US3592809D

申请日：1968-04-16

Applicant: BAYER AG

Inventor： IMMEL OTTO ,  SCHNELL HERMANN ,  SCHWARZ HANS-HELMUT

IPC: C07D201/04 ,  C07D41/06

CPC classification number: C07D201/04

Abstract: THE INVENTION RELATES TO A PROCESS FOR THE PRODUCTION OF LACTAMS BY CATALYTICAL REARRANGEMENT OF KETOXIMES IN THE GASEOUS PHASE, USING AS A CATALYST SYSTEM A MIXTURE OF BORON TRIOXIDE OR BORIC ACID, HIGHLY DISPERSED CARBON, AND ONE OR MORE ADDITIONAL INORGANIC SUPPORTING MATERIAL, SAID HIGHLY DISPERSED CARBON HAVING A PARTICLE SIZE OF LESS THAN 0.1MM. IN DIAMETER.

公开(公告)号：US3583980A

公开(公告)日：1971-06-08

申请号：US3583980D

申请日：1968-07-31

Applicant: BAYER AG

Inventor： MANSMANN MANFRED ,  ZIRNGIBL HANS ,  IMMEL OTTO

IPC: C07D201/04 ,  C07F5/04 ,  C07D41/06

CPC classification number: C07D201/04 ,  C07F5/04

Abstract: IMPROVEMENT IN THE PROCESS FOR THE CATALYTIC REARRANGEMENT OF CYCLIC KETOXIMES TO LACTAMS USING A BORON OXIDE CATALYST, THE LOSS OF BORON OXIDE BEING AVOIDED BY SEPARATING FROM THE REACTION PRODUCTS A PRIMARY CONDENSATE AT TEMPERATURES OF FROM 120 TO 220*C., CONTAINING BORIC ACID AND ISLOATE THIS BORIC ACID FROM THE PRIMARY CONDENSATION PRODUCT BY ESTERIFICATION WITH A MONODYDRIC ALIPHATIC ALCOHOL TO YIELD AN ORTHOBORIC ACID TRIALKYLESTER WHICH IS HYDROLYZED TO PURE BORIC ACID.

公开(公告)号：US3553204A

公开(公告)日：1971-01-05

申请号：US3553204D

申请日：1967-01-10

Applicant: INVENTA AG

Inventor： GEHRING ALBERT ,  BERTROSSA GUISEPPE ,  SCHULTZE HANS-JOACHIM

IPC: C07D201/04 ,  C07D41/06

CPC classification number: C07D201/04

Abstract: A PROCESS FOR THE CONTINUOUS PRODUCTION OF LACTAMS WHICH ARE STARTING MATERIALS FOR NYLON-TYPE POLYAMIDES, FROM CYCLIC KETOXIMES, USING MINERAL ACIDS AS A CATALYST, CYCLING OXIME AND ACID BY WAY OF NOZZLES FROM CONTINUOUS MIXERS IN LIEU OF USING AGITATOR VESSELS. THE NOZZLE DELIVERY SPEED OF THE OXIME AND OF THE ACID IS AT LEAST TWICE THE FLOW VELOCITY OF THE CYCLE AND THE VOLUME PROPORTIONS OF THE PRODUCT PUMPED PER HOUR TO OXIME INTRODUCED IS 50:1 TO 150:1.

公开(公告)号：US3541080A

公开(公告)日：1970-11-17

申请号：US3541080D

申请日：1967-07-24

Applicant: TORAY INDUSTRIES

Inventor： WAKAMATSU SHIGERU ,  KONDO RYOZO ,  SHINOMIYA MASAYASU ,  OKAMOTO MASARU

IPC: B23K9/12 ,  C07D201/04 ,  C07D201/10 ,  C07D41/06

CPC classification number: C07D201/10 ,  B23K9/125 ,  C07D201/04