公开(公告)号：EP0620042B1

公开(公告)日：1997-12-29

申请号：EP94104844

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 ,  B01J27/02 ,  B01J37/18 ,  B01J37/20 ,  C01B21/14 ,  B01J23/42

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

公开(公告)号：ES2135426T3

公开(公告)日：1999-11-01

申请号：ES93106681

申请日：1993-04-24

Applicant: BASF AG

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

IPC: C07D201/12 ,  C07D223/10 ,  C08G69/14

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：DE4311420A1

公开(公告)日：1994-10-13

申请号：DE4311420

申请日：1993-04-07

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 ,  B01J23/96

公开(公告)号：DE59100426D1

公开(公告)日：1993-11-04

申请号：DE59100426

申请日：1991-07-06

Applicant: BASF AG

Inventor： STEIGLEITER WERNER ,  HOELDERICH WOLFGANG DR ,  WEISS FRANZ-JOSEF DR ,  FUCHS HUGO DR ,  GUNS LUC ,  NEUBAUER GERALD DR ,  RITZ JOSEF DR

IPC: B01J21/18 ,  B01J23/42 ,  B01J27/02 ,  B01J37/20 ,  C01B21/14

Abstract: A platinum-on-graphite catalyst having a platinum content of from 0.01 to 5% w/w, wherein the graphite support has an apparent density of from 1.7 to 2.2 g/ml and the use thereof as a hydrogenation catalyst.

公开(公告)号：DE59002817D1

公开(公告)日：1993-10-28

申请号：DE59002817

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：DE4022853A1

公开(公告)日：1992-01-23

申请号：DE4022853

申请日：1990-07-18

Applicant: BASF AG

Inventor： WEISS FRANZ-JOSEF DR ,  FUCHS HUGO DR ,  STEIGLEITER WERNER ,  HOELDERICH WOLFGANG DR ,  GUNS LUC ,  NEUBAUER GERALD DR ,  RITZ JOSEF DR

IPC: B01J21/18 ,  B01J23/42 ,  B01J27/02 ,  B01J35/02 ,  B01J35/10 ,  C01B21/14

Abstract: Platinum catalysts on a graphite support, having a platinum content from 0.01 to 5 % by weight, are characterised in that the graphite support has a grain surface area of from 1 to 30 m /g. … 183 to 600 mu m 15% by volume +/- 15% absolute 68.3 to 183 mu m 30% by volume +/- 20% 31.0 to 68.3 mu m 25% by volume +/- 20% 17.1 to 31.0 mu m 15% by volume +/- 10% 5.2 to 17.1 mu m 12% by volume +/- 10% 5.2 mu m 5% by volume +/- 5% …

公开(公告)号：DE3329692A1

公开(公告)日：1985-03-07

申请号：DE3329692

申请日：1983-08-17

Applicant: BASF AG

Inventor： FRANK GERHARD DR ,  NEUBAUER GERALD DR

IPC: C07D295/02 ,  B01J23/74 ,  B01J23/745 ,  C07B61/00 ,  C07D207/06 ,  C07D211/02 ,  C07D211/12 ,  C07D223/04 ,  C07D295/023

Abstract: 5-Membered, 6-membered or 7-membered cyclic imines are prepared by hydrogenating a C2-C4-alkanedinitrile in the liquid phase, at from 180 DEG to 300 DEG C. and under superatmospheric pressure, in the presence of a catalyst, by a process in which an iron catalyst obtained by reduction of an iron oxide with hydrogen at

公开(公告)号：DE3231193A1

公开(公告)日：1984-02-23

申请号：DE3231193

申请日：1982-08-21

Applicant: BASF AG

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

IPC: C07B61/00 ,  B01J23/00 ,  B01J23/74 ,  B01J23/745 ,  C07C67/00 ,  C07C209/00 ,  C07C209/48 ,  C07C211/03 ,  C07C211/09 ,  C07C87/14 ,  C07C87/04 ,  C07C85/12

Abstract: Saturated primary amines are prepared by reacting a nitrile with hydrogen at elevated temperature under superatmospheric pressure in the presence of ammonia and a metallic iron catalyst which has been obtained by reducing anisometric iron oxide particles with hydrogen at not more than 500 DEG C.

公开(公告)号：DE4407222A1

公开(公告)日：1995-09-07

申请号：DE4407222

申请日：1994-03-04

Applicant: BASF AG

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

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

公开(公告)号：ES2048183T3

公开(公告)日：1994-03-16

申请号：ES88116802

申请日：1988-10-11

Applicant: BASF AG

Inventor： NEUBAUER GERALD DR ,  DE DECKER EMILE ,  FUCHS HUGO DR ,  HOLZKNECHT BERNHARD DR ,  RITZ JOSEF DR

IPC: 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).