公开(公告)号：DE19535404A1

公开(公告)日：1997-03-27

申请号：DE19535404

申请日：1995-09-23

Applicant: BASF AG

Inventor： ROS KARL-HEINZ DR ,  WAMBACH LUDWIG DR ,  WACHE HARRO DR

IPC: C07C45/86 ,  C07C49/17 ,  C07C49/175

Abstract: Method for increasing the stability of hydroxy- and alkoxy-alkyl ketones during storage comprises adding 0.0001-1 wt.% base.

公开(公告)号：DE19525507A1

公开(公告)日：1997-01-16

申请号：DE19525507

申请日：1995-07-13

Applicant: BASF AG

Inventor： BECKER RAINER DR ,  KERSTEN SIEGFRIED DR ,  STADLER KLAUS PETER DR ,  WACHE HARRO DR ,  WAMBACH LUDWIG DR ,  WEYER HANS-JUERGEN DR ,  ROS KARL-HEINZ DR

IPC: C07C209/12 ,  C07C211/63 ,  C07C209/08

公开(公告)号：DE59104571D1

公开(公告)日：1995-03-23

申请号：DE59104571

申请日：1991-04-26

Applicant: BASF AG

Inventor： NORTHEMANN ANDREAS DR ,  FISCHER MARTIN DR ,  WAMBACH LUDWIG DR

IPC: B01J21/04 ,  B01J21/08 ,  B01J27/182 ,  C07B61/00 ,  C07F9/38 ,  C07F9/40

Abstract: Process for the preparation of vinylphosphonic acid derivatives of the general formula I in which R and R can be identical or different and represent hydrogen or a C1-C8-alkyl or C6-C10-aryl or -aralkyl radical which may be substituted by Cl or Br, it being possible for R and R also to be linked to give an alicyclic ring having 3 to 12 ring C atoms, according to which an ethanephosphonic ester of the general formula II in which R and R have the same meaning as R and R but are not a hydrogen atom, X represents a hydroxyl group, a halogen or a radical -OR , in which R is a hydrogen atom or a radical and R is a C1-C6-alkyl radical or an alicyclic ring, is reacted in the gas phase in the presence of solid catalysts.

公开(公告)号：DE4014483A1

公开(公告)日：1991-11-14

申请号：DE4014483

申请日：1990-05-07

Applicant: BASF AG

Inventor： NORTHEMANN ANDREAS DR ,  FISCHER MARTIN DR ,  WAMBACH LUDWIG DR

IPC: B01J21/04 ,  B01J21/08 ,  B01J27/182 ,  C07B61/00 ,  C07F9/38 ,  C07F9/40

Abstract: Process for the preparation of vinylphosphonic acid derivatives of the general formula I in which R and R can be identical or different and represent hydrogen or a C1-C8-alkyl or C6-C10-aryl or -aralkyl radical which may be substituted by Cl or Br, it being possible for R and R also to be linked to give an alicyclic ring having 3 to 12 ring C atoms, according to which an ethanephosphonic ester of the general formula II in which R and R have the same meaning as R and R but are not a hydrogen atom, X represents a hydroxyl group, a halogen or a radical -OR , in which R is a hydrogen atom or a radical and R is a C1-C6-alkyl radical or an alicyclic ring, is reacted in the gas phase in the presence of solid catalysts.

公开(公告)号：ES2129914T3

公开(公告)日：1999-06-16

申请号：ES96110782

申请日：1996-07-04

Applicant: BASF AG

Inventor： BECKER RAINER DR ,  KERSTEN SIEGFRIED DR ,  ROSS KARL-HEINZ DR ,  STADLER KLAUS PETER DR ,  WACHE HARRO DR ,  WAMBACH LUDWIG DR

IPC: C07C209/12 ,  C07C211/63

公开(公告)号：DE59302483D1

公开(公告)日：1996-06-13

申请号：DE59302483

申请日：1993-02-25

Applicant: BASF AG

Inventor： WAMBACH LUDWIG DR ,  IRGANG MATTHIAS DR

IPC: C07C209/72

公开(公告)号：DE4038626A1

公开(公告)日：1991-06-13

申请号：DE4038626

申请日：1990-12-04

Applicant: BASF AG

Inventor： GRAMMATIS ZAFIRIOS DR ,  SCHLINDWEIN HEINZ ,  WAMBACH LUDWIG DR

IPC: B01J8/24 ,  C07D207/26 ,  C07D207/267

Abstract: 5-Vinyl-2-pyrrolidone is prepd from 5-(2-acetoxy) ethyl-2-pyrrolidone (I) by spraying (I) as a liq into a vortex layer at raised temp, spontaneous evaporation, and thermal splitting off of acetic acid. The vortex material is abrasion-resistant and free-flowing, eg a ceramic with narrow range of particle size and vortex point not above 30 cm/sec. The temp is 300-1000 (500-800) deg C, and the vortex gas is inert, eg N2, and is heated to the operating temp in the vortex layer or in a pre-heater, and fed into the reaction zone at 5-100 cm/sec (10-40 cm/sec). ADVANTAGE - Evaporation and reaction are in the same appts, the reactor does not become encrusted or blocked, coking is avoided, temp is uniform in the whole reaction layer, yield is higher, and (I) need not be pure, but may be multi-component mixt, eg an isomeric mixt of 3- or 5-(2-acetoxy), ethyl-2-pyrrolidone and accompanying cpds.

公开(公告)号：DE3728764A1

公开(公告)日：1989-03-30

申请号：DE3728764

申请日：1987-08-28

Applicant: BASF AG

Inventor： WAMBACH LUDWIG DR ,  IRGANG MATTHIAS DR ,  FISCHER MARTIN DR

IPC: C07C47/54 ,  B01J23/745 ,  B01J31/20 ,  C07B61/00 ,  C07C45/00 ,  C07C45/41 ,  C07C47/02 ,  C07C47/542 ,  C07C67/00

公开(公告)号：DE4207314A1

公开(公告)日：1993-09-09

申请号：DE4207314

申请日：1992-03-07

Applicant: BASF AG

Inventor： WAMBACH LUDWIG DR ,  IRGANG MATTHIAS DR

IPC: C07C209/72

公开(公告)号：DE3877463D1

公开(公告)日：1993-02-25

申请号：DE3877463

申请日：1988-08-23

Applicant: BASF AG

Inventor： WAMBACH LUDWIG DR ,  IRGANG MATTHIAS DR ,  FISCHER MARTIN DR

IPC: C07C47/54 ,  B01J23/745 ,  B01J31/20 ,  C07B61/00 ,  C07C45/00 ,  C07C45/41 ,  C07C47/02 ,  C07C47/542 ,  C07C67/00

Abstract: Prepn. is claimed of aldehydes by gas-phase hydrogenation of aromatic carboxylic acids, or aliphatic carboxylic acids which possessup to one hydrogen atom alpha to the carboxyl or esters or anhydrides of these acids, at temps. of 300 to 450 deg.C and pressures of 0.1 10 bar aided by special iron as catalysts. Cpds are prepd. by burning carbonyls in air and oxygen to the required level of iron oxide, and may be impregnated into an inert carrier of suitable particle size and mixed with an appropriate lubricant for use in a fluidised bed reactor.