公开(公告)号：AU673458B2

公开(公告)日：1996-11-07

申请号：AU7432294

申请日：1994-09-30

Applicant: HOECHST AG

Inventor： DIEKHAUS GERHARD ,  KAMPMANN DETLEF ,  KNIEP CLAUS ,  MULLER THOMAS ,  WALTER JUTTA ,  WEBER JURGEN

IPC: B01J31/24 ,  C07B61/00 ,  C07C209/60 ,  C07C211/03 ,  C07C209/26 ,  C07C211/08

公开(公告)号：CA1336839C

公开(公告)日：1995-08-29

申请号：CA570783

申请日：1988-06-29

Applicant: HOECHST AG

Inventor： WEBER JUERGEN ,  KAMPMANN DETLEF ,  THOENNESSEN FRANZ ,  KNIEP CLAUS

IPC: C07C213/02 ,  B01J23/44 ,  C07B61/00 ,  C07C67/00 ,  C07C213/00 ,  C07C213/08 ,  C07C217/08 ,  C07C217/42

Abstract: A process for the preparation of 2,2'-oxybis¢N,N-dimethylethanamine! by reaction of 2,2'oxybisethanamine, hydrogen and formaldehyde having a reduced percentage of water on conventional fixed-bed hydrogenation catalysts. The reactants, especially the amine and formaldehyde, are heated to a predetermined temperature separate from each other, and then mixed with each other in the presence of the fixed-bed catalyst.

公开(公告)号：CA2017762A1

公开(公告)日：1990-11-30

申请号：CA2017762

申请日：1990-05-29

Applicant: HOECHST AG

Inventor： KAMPMANN DETLEF ,  WEBER JURGEN ,  KNIEP CLAUS

IPC: B01J23/755 ,  C07B61/00 ,  C07C209/26 ,  C07C211/09 ,  C07C211/19

Abstract: The present invention relates to a process for the preparation of alpha , omega -diamines from alpha , omega -dialdehydes. An alpha , omega -dialdehyde is reacted with a primary amine in the presence of water, and the reaction mixture formed is treated with excess ammonia and hydrogen in the presence of a hydrogenation catalyst.

公开(公告)号：HU214749B

公开(公告)日：1998-05-28

申请号：HU9401233

申请日：1994-04-29

Applicant: HOECHST AG

Inventor： BAYER KARL ,  FREYER WALTER ,  KAMPMANN DETLEF

IPC: B01J19/12 ,  B01J19/24 ,  C07C51/58 ,  C07C53/48 ,  B01J31/02 ,  C07C21/10 ,  C07C211/03

Abstract: The invention relates to a process for the preparation of dichloroacetyl chloride by oxidation of trichloroethylene under pressure and at elevated temperature in the presence of a specific secondary aliphatic or cycloaliphatic amine of the formula HNR R , in which R and R are identical or different and are an alkyl radical having 1 to 10 C atoms, at least one of the radicals R and R having a tertiary structure, or R and R , together with the nitrogen atom, form a 5- to 10-membered ring, at least one of the C atoms adjacent to the nitrogen being a tertiary C atom. Good yields of the acid chloride and low contents of trichloroethylene oxide are obtained in one process step.

公开(公告)号：CA2192536A1

公开(公告)日：1997-06-12

申请号：CA2192536

申请日：1996-12-10

Applicant: HOECHST AG

Inventor： EBMEYER FRANK ,  KAMPMANN DETLEF ,  PAULUS-VON RUSSDORF ULF OTTO ,  ROSSMEISSL RUDOLF

IPC: C07C51/377 ,  C07C51/43 ,  C07C51/487 ,  C07C53/16

Abstract: The present invention relates to a process for the preparation of a particularly pure monochloroacetic acid, in which, in a first step, a hydrogenation of a mixture of mono- and dichloroacetic acid is carried out to a residual content of dichloroacetic acid of 400 to 600 ppm and, in a second step, this mixture is subjected to melt crystallization. The hydrogenation is carried out with a heterogeneous catalyst which comprises 0.1 - 5.0% by weight of palladium and in which active charcoal or silicon dioxide is used as the support.

公开(公告)号：CA2017762C

公开(公告)日：1996-09-24

申请号：CA2017762

申请日：1990-05-29

Applicant: HOECHST AG

Inventor： KAMPMANN DETLEF ,  WEBER JUERGEN ,  KNIEP CLAUS

IPC: B01J23/755 ,  C07B61/00 ,  C07C209/26 ,  C07C211/09 ,  C07C211/19 ,  C07C209/60 ,  C07C211/38

Abstract: A process for the preparation of .alpha.,.omega.-diamines from .alpha.,.omega.-dialdehydes wherein an .alpha.,.omega.-dialdehyde is reacted with a primary amine in the presence of water and the resulting reaction mixture is treated with excess ammonia and hydrogen in the presence of a hydrogenation catalyst.

公开(公告)号：CA2054540A1

公开(公告)日：1992-05-08

申请号：CA2054540

申请日：1991-10-30

Applicant: HOECHST AG

Inventor： WEBER JUERGEN ,  KAMPMANN DETLEF ,  DEYMANN DETLEF ,  KNIEP CLAUS

IPC: B01J23/755 ,  C07B61/00 ,  C07C209/26 ,  C07C209/60 ,  C07C209/70 ,  C07C211/08

Abstract: Frankfurt, 6 November 1990 PAT bin-dan Hoe 90/Y017 Hoechst Aktiengesellschaft, 6230 Frankfurt am Main 80 of the disclosure The present invention relates to a process for the preparation of N-methylalkylamines of the formula CH3-NH-CH2-R in which R is an aliphatic radical having 1 to 3 carbon atoms, by reacting an aldehyde of the formula R-CHO with an amine of the formula R'-NH2 to give a Schiff base, removing the water of reaction and reacting the Schiff base with methylamine and hydrogen in the presence of a hydrogenation catalyst.

公开(公告)号：CA2032362A1

公开(公告)日：1991-06-24

申请号：CA2032362

申请日：1990-12-14

Applicant: HOECHST AG

Inventor： KAMPMANN DETLEF ,  LUKAS RAINER ,  KNIEP CLAUS

IPC: B01J23/40 ,  B01J23/755 ,  B01J23/78 ,  B01J23/86 ,  B01J23/889 ,  C07B61/00 ,  C07C209/26 ,  C07C209/84 ,  C07C211/08 ,  C07C209/60 ,  C07C209/86

Abstract: The present invention relates to a process for the preparation of N,N-dimethylamines by reaction of an aldehyde with dimethylamine and hydrogen under pressure and at elevated temperature in the presence of a hydrogenation catalyst containing Ni, Co, Cu, Mn, Fe, Rh, Pd and/or Pt. After unconverted dimethylamine and excess hydrogen have been separated off, formaldehyde or a formaldehyde-forming substance is added, and distillation is carried out.

公开(公告)号：CA2137747C

公开(公告)日：2005-08-30

申请号：CA2137747

申请日：1994-12-09

Applicant: HOECHST AG

Inventor： KAMPMANN DETLEF ,  STUHLMULLER GEORG

IPC: C07D211/12 ,  C07D295/023

Abstract: The reduction of triacetonamine with hydrazine also succeeds continuously by reactive distillation if the hydrazone is first formed and this is continuously transported to the distillation bottoms comprising a high-boiling solvent and an alkali at the base of a distillation column and the resulting 2,2,6,6-tetra-methylpiperidine is distilled off as an azeotrope. In this procedure a hydrazine/triacetonamine ratio of 1.5:1 to 2.0:1 is sufficient, in comparison with the conventional synthesis, the product yield being able to be considerably increased (>90 %). Moreover, the amounts of alkali and solvent used can be considerably reduced.

公开(公告)号：NO965280L

公开(公告)日：1997-06-12

申请号：NO965280

申请日：1996-12-10

Applicant: HOECHST AG

Inventor： EBMEYER FRANK ,  KAMPMANN DETLEF ,  RUSSDORF ULF OTTO PAULUS-VON ,  ROSSMEISSL RUDOLF

IPC: C07C51/377 ,  C07C51/43 ,  C07C51/487 ,  C07C53/16