公开(公告)号：DE3402734A1

公开(公告)日：1985-08-01

申请号：DE3402734

申请日：1984-01-27

Applicant: BASF AG

Inventor： FRANK GERHARD DR ,  NEUBAUER GERALD DR

IPC: B01J23/74 ,  B01J23/745 ,  B01J33/00 ,  B01J37/00 ,  B01J37/14 ,  B01J37/18 ,  C07B61/00 ,  C07C67/00 ,  C07C209/00 ,  C07C209/48 ,  C07C211/02 ,  B01J35/02 ,  C07C85/12

公开(公告)号：DE3231192A1

公开(公告)日：1984-02-23

申请号：DE3231192

申请日：1982-08-21

Applicant: BASF AG

Inventor： FRANK GERHARD DR ,  RUDOLF PETER DR ,  NEUBAUER GERALD DR ,  OHLINGER MANFRED DR ,  WILFINGER HANS JOERG DR ,  PFANNEBECKER EMIL ,  DUFFNER PAUL DR

IPC: B01J23/74 ,  B01J23/745 ,  B01J37/00 ,  C07B61/00 ,  C07C67/00 ,  C07C209/00 ,  C07C209/48 ,  C07C211/09 ,  C07C85/12 ,  C07C87/12 ,  C07C87/14

公开(公告)号：DE2960562D1

公开(公告)日：1981-11-05

申请号：DE2960562

申请日：1979-05-03

Applicant: BASF AG

Inventor： DECKER EMILE DE ,  NEUBAUER GERALD DR ,  PIJL PAUL ,  WAUWE GERARD VAN

IPC: B01D53/34 ,  B01D53/50 ,  B01D53/77 ,  C01B17/96 ,  C01C1/24 ,  C01D5/04 ,  C02F1/20 ,  C02F1/74

公开(公告)号：DE59404852D1

公开(公告)日：1998-02-05

申请号：DE59404852

申请日：1994-03-28

Applicant: BASF AG

Inventor： WEISS FRANZ-JOSEF DR ,  FUCHS HUGO DR ,  NEUBAUER GERALD DR ,  SCHNEIDER HEINZ-WALTER DR

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

公开(公告)号：ES2098407T3

公开(公告)日：1997-05-01

申请号：ES92115903

申请日：1992-09-17

Applicant: BASF AG

Inventor： FUCHS HUGO DR ,  NEUBAUER GERALD DR ,  RITZ JOSEF DR

IPC: C07D201/04 ,  C07D201/06 ,  C07D223/10

Abstract: Process for the production of caprolactam by Beckmann rearrangement of cyclohexanone oxime with oleum at a temperature of 85 to 125 DEG C in several successive rearrangement steps, characterised in that a part of the reaction mixture leaving the last rearrangement step is fed back to at least one of the preceding rearrangement steps.

公开(公告)号：DE59208165D1

公开(公告)日：1997-04-17

申请号：DE59208165

申请日：1992-09-17

Applicant: BASF AG

Inventor： FUCHS HUGO DR ,  NEUBAUER GERALD DR ,  RITZ JOSEF DR

IPC: C07D201/04 ,  C07D201/06 ,  C07D223/10

Abstract: Process for the production of caprolactam by Beckmann rearrangement of cyclohexanone oxime with oleum at a temperature of 85 to 125 DEG C in several successive rearrangement steps, characterised in that a part of the reaction mixture leaving the last rearrangement step is fed back to at least one of the preceding rearrangement steps.

公开(公告)号：ES2059920T3

公开(公告)日：1994-11-16

申请号：ES90114236

申请日：1990-07-25

Applicant: BASF AG

Inventor： NEUBAUER GERALD DR ,  RITZ JOSEF DR ,  AGAR DAVID DR ,  FISCHER ROLF DR ,  VAGT UWE DR ,  FUCHS HUGO DR

IPC: C07D223/10 ,  C07D201/16

Abstract: Caprolactam is purified continuously by passing a 75-95% strength by weight aqueous caprolactam solution together with hydrogen at 50 DEG -95 DEG C. and 1.5-100 bar upward through a fixed-bed supported palladium or nickel catalyst in a tubular zone while maintaining a residence time of from 10 to 100 min.

公开(公告)号：ES2044385T3

公开(公告)日：1994-01-01

申请号：ES90124028

申请日：1990-12-13

Applicant: BASF AG

Inventor： FUCHS HUGO DR ,  NEUBAUER GERALD DR ,  RITZ JOSEF DR

IPC: C01B21/14 ,  C02F1/26 ,  C07C249/08 ,  C07C249/14 ,  C07C251/44

Abstract: Process for processing aqueous mother liquors containing hydrochloric acid, sulphuric acid and their hydroxylammonium and ammonium salts, characterised in that the mother liquors are brought into intimate contact with an excess of cyclohexanone based on the content of hydroxylammonium salts, while maintaining a pH of 3 to 5.5 by adding alkali metal hydroxide solutions, and the cyclohexanone-oxime-containing cyclohexanone phase is separated off and washed with water until it is virtually free from chloride.

公开(公告)号：DE4215087A1

公开(公告)日：1993-11-11

申请号：DE4215087

申请日：1992-05-07

Applicant: BASF AG

Inventor： FUCHS HUGO DR ,  NEUBAUER GERALD DR ,  RITZ JOSEF DR ,  PRIESTER CLAUS-ULRICH DR

IPC: C07D201/12 ,  C07D223/10 ,  C08G69/14 ,  C08J11/14 ,  C08J11/16 ,  C08L77/02 ,  C08G69/46

Abstract: Process for the recovery of caprolactam from polycaprolactam by hydrolytic cleavage of polycaprolactam with 5 to 50 parts by weight of water per part by weight of polycaprolactam at a temperature from 200 to 350 DEG C at elevated pressure with the production of an aqueous solution or suspension which contains monomeric caprolactam, its oligomer and optionally polycaprolactam and subsequent removal of monomeric caprolactam from the aqueous solution or suspension by distillation or extraction, the hydrolytic cleavage being carried out at a pH from 5 to 10 with the additional use of alkali metal hydroxide.

公开(公告)号：DE4132498A1

公开(公告)日：1993-04-01

申请号：DE4132498

申请日：1991-09-30

Applicant: BASF AG

Inventor： FUCHS HUGO DR ,  NEUBAUER GERALD DR ,  RITZ JOSEF DR

IPC: C07D201/04 ,  C07D201/06 ,  C07D223/10

Abstract: Process for the production of caprolactam by Beckmann rearrangement of cyclohexanone oxime with oleum at a temperature of 85 to 125 DEG C in several successive rearrangement steps, characterised in that a part of the reaction mixture leaving the last rearrangement step is fed back to at least one of the preceding rearrangement steps.