公开(公告)号：US3527568A

公开(公告)日：1970-09-08

申请号：US3527568D

申请日：1967-12-11

Applicant: BAYER AG

Inventor： IMMEL OTTO ,  SCHNELL HERMANN ,  SCHWARZ HANS HELMUT ,  MANSMANN MANFRED

IPC: B01J27/02 ,  B01J27/053 ,  B01J27/18 ,  C07D201/04 ,  C07D41/06

CPC classification number: C07D201/04 ,  B01J27/02 ,  B01J27/053 ,  B01J27/1806

公开(公告)号：US3899485A

公开(公告)日：1975-08-12

申请号：US32612573

申请日：1973-01-23

Applicant: BAYER AG

Inventor： IMMEL OTTO ,  SCHWARZ HANS HELMUT

IPC: B01D11/04 ,  C07D201/16 ,  C07D1/06

CPC classification number: C07D201/16

Abstract: Object of the invention is a process for the purification of Epsilon -caprolactam prepared either by Beckmann rearrangement or by rearrangement of cyclohexanoxime in the gaseous phase or by depolymerisation of polyamide waste comprising treating the solid, finely-divided crude lactam with an organic solvent for a period of up to 60 hours at a temperature from 0* to 50*C. According to the purification process many impurities could be removed without a substantial decrease in the yield of the purified caprolactam.

Abstract translation: 本发明的目的是通过贝克曼重排或通过在气相中重新排列环己酮肟或通过聚酰胺废物的解聚来纯化ε-己内酰胺的方法，包括用有机溶剂处理固体细碎的内酰胺， 在0℃至50℃的温度下达60小时。根据纯化方法，可以除去许多杂质，而不会显着降低纯化的己内酰胺的产率。

公开(公告)号：US3579558A

公开(公告)日：1971-05-18

申请号：US3579558D

申请日：1968-09-25

Applicant: BAYER AG

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

IPC: C07B61/00 ,  B01J21/00 ,  B01J23/00 ,  B01J27/00 ,  C07C67/00 ,  C07C253/00 ,  C07C255/24 ,  C07C121/02

CPC classification number: C07C255/00

Abstract: PROCESS OF PRODUCING W-AMINOALKANE NITRILES BY HEATING CORRESPONDING LACTAMS WITH A STOICHIOMETRIC EXCESS OF AMMONIA IN THE GASEOUS PHASE IN THE PRESENCE OF A CATALYTIC AMOUNT OF A SOLID CATALYST, SAID CATALYST CONSISTING ESSENTIALLY OF MAGNESIUM SILICATE, CALCIUM SILICATE, ZINC SILICATE, ALUMINUM SILICATE, MANAGANESE SILICATE, IRON SILICATE, FLUORINATED ALUMINUM OXIDE, FLUORINATED MAGNESIUM SILICATE, FLUORINATED CALCIUM SILICATE, FLUORINATED ZINC SILICATE, FLUORINATED ALUMINUM SILICATE, FLUORINATED MANGANESE SILICATE OR FLUORINATED IRON SILICATE.

公开(公告)号：US3574193A

公开(公告)日：1971-04-06

申请号：US3574193D

申请日：1969-08-14

Applicant: BAYER AG

Inventor： IMMEL OTTO ,  SCHWARZ HANS-HEIMUT

IPC: C07D201/04 ,  C07D41/06 ,  C07D29/42

CPC classification number: C07D201/04

Abstract: PROCESS FOR THE PRODUCTION OF LACTAMS BY CATALYTIC REARRANGEMENT OF CYCLIC KETOXIMES HAVING 5-12 C-ATOMS IN THE RING IN THE GAS PHASE, USING AS A CATALYST A MIXTURE OF BORON NITRIDE AND BORIC ACID OR BORAN NITRIDE AND BORON TRIOXIDE.

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：US3882102A

公开(公告)日：1975-05-06

申请号：US40904673

申请日：1973-10-24

Applicant: BAYER AG

Inventor： IMMEL OTTO ,  SCHWARZ HANS-HELMUT

IPC: C07D201/16 ,  C07D41/06

CPC classification number: C07D201/16

Abstract: The invention relates to a process for the purification of caprolactam which is obtained by rearrangement of cyclohexanone oxime in the gas phase in the presence of solid catalysts. The purification takes place by dissolving the crude lactam in benzene or in alkyl benzene with seven to eight carbon atoms and recrystallization whilst cooling.

Abstract translation: 本发明涉及通过在固相催化剂存在下在气相中重排环己酮肟而得到的己内酰胺的纯化方法。 通过将粗内酰胺溶解在苯或具有7至8个碳原子的烷基苯中并在冷却下重结晶来进行纯化。

公开(公告)号：US3652553A

公开(公告)日：1972-03-28

申请号：US3652553D

申请日：1969-12-08

Applicant: BAYER AG

Inventor： MANSMANN MANFRED ,  IMMEL OTTO ,  ZIRNGIBL HANS

IPC: C07D201/04 ,  C07D41/06

CPC classification number: C07D201/04

Abstract: AN IMPROVEMENT FOR THE PROCESS TO PRODUCE LACTAMS BY CATALYTICALLY REARRANGING CYCLIC KETOXIMES BY PASSING A GAS MIXTURE CONSISTING OF A GASEOUS CYCLIC KETONXINE AND STEAM OR A MIXTURE OF A GASEOUS CYCLIC KETOXIME, STEAM AND AN INERT GAS OVER A BORON OXIDE CATALYST AT TEMPERATURES OF FROM 200 TO 400*C. AND RECOVERING THE LACTAM FROM THE GAS MIXTURE THUS OBTAINED. BEFORE. BEFORE PASSING THE STEAM OVER THE BORON OXIDE CATALYST THEY ARE SATURATED WITH BORON OXIDE BY PASSING OVER THE X-RAY CRYSTALLINE MODIFICATION OF BORON OXIDE AT A TEMPERATURE OF FROM 200 TO 450C.

公开(公告)号：US3586668A

公开(公告)日：1971-06-22

申请号：US3586668D

申请日：1968-02-23

Applicant: BAYER AG

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

IPC: C07D201/04 ,  C07D41/06

CPC classification number: C07D201/04

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