公开(公告)号：DE4127110A1

公开(公告)日：1993-02-18

申请号：DE4127110

申请日：1991-08-16

Applicant: BASF AG

Inventor： BORHO KLAUS DR ,  GRAMMATIS ZAFIRIOS DR ,  HENNICKE KARL-HEINZ ,  MACH WOLFGANG DR ,  MAYER KARL ,  SARTOR KARL-HEINZ ,  STEGE WOLF DIETER ,  THOMA PETER DR ,  VOLLMERHAUS EWALD

IPC: C09B3/02 ,  C09B67/06 ,  C09B67/54

Abstract: In a continuous process for environment-friendly drying and purification of benzanthrone, the following process steps are applied: - charging a pumpable paste containing benzanthrone to a melt present in a stirred kettle, - dehydrating and melting the paste by means of steam, - condensing the water vapours emanating from the stirred kettle, - flaking off the melt present in the stirred kettle by means of a roll and - filling the flakes produced during flaking-off into a container.

公开(公告)号：DE3938528A1

公开(公告)日：1991-05-23

申请号：DE3938528

申请日：1989-11-21

Applicant: BASF AG

Inventor： DIETRICH GERHARD DR ,  BORHO KLAUS DR ,  SARTOR KARL-HEINZ ,  SCHLINDWEIN HEINZ ,  ASCHERL HERMANN ,  GRAMMATIS ZAFIRIOS DR ,  NIESSNER MANFRED DR

IPC: B01J19/00 ,  B01J19/18 ,  C07C213/00 ,  C07C213/02 ,  C07C219/08 ,  C07C231/12 ,  C07C233/38

公开(公告)号：DE3801455A1

公开(公告)日：1989-08-03

申请号：DE3801455

申请日：1988-01-20

Applicant: BASF AG

Inventor： STOCKBURGER DIETER DR ,  FESER RAINER DR ,  GRAMMATIS ZAFIRIOS DR ,  MUELLER NORBERT DR ,  OHLINGER MANFRED DR ,  REINICKE HELMUT DR ,  SARTOR KARL-HEINZ ,  SCHLINDWEIN HEINZ ,  STECK WERNER DR

IPC: C01G37/02 ,  C01G37/027

公开(公告)号：ES2062264T3

公开(公告)日：1994-12-16

申请号：ES90121604

申请日：1990-11-12

Applicant: BASF AG

Inventor： ASCHERL HERMANN DIPL-ING ,  BORHO KLAUS DR ,  DIETRICH GERHARD DR ,  GRAMMATIS ZAFIRIOS DR ,  NIESSNER MANFRED DR ,  SARTOR KARL-HEINZ DIPL-ING ,  SCHLINDWEIN HEINZ

IPC: B01J19/00 ,  B01J19/18 ,  C07C213/00 ,  C07C213/02 ,  C07C219/08 ,  C07C231/12 ,  C07C233/38

公开(公告)号：DE3924300A1

公开(公告)日：1991-01-31

申请号：DE3924300

申请日：1989-07-22

Applicant: BASF AG

Inventor： MAIR GUNTHER DR ,  STERZEL HANS-JOSEF DR ,  GRAMMATIS ZAFIRIOS DR

IPC: C01B21/06 ,  C01B21/064 ,  C01B21/068 ,  C01B21/076

公开(公告)号：DE59205658D1

公开(公告)日：1996-04-18

申请号：DE59205658

申请日：1992-08-01

Applicant: BASF AG

Inventor： BORHO KLAUS DR ,  GRAMMATIS ZAFIRIOS DR ,  HENNICKE KARL-HEINZ ,  MACH WOLFGANG DR ,  MAYER KARL ,  SARTOR KARL-HEINZ ,  STEGE WOLF DIETER ,  THOMA PETER DR ,  VOLLMERHAUS EWALD

IPC: C09B3/02 ,  C09B67/06 ,  C09B67/54

Abstract: In a continuous process for environment-friendly drying and purification of benzanthrone, the following process steps are applied: - charging a pumpable paste containing benzanthrone to a melt present in a stirred kettle, - dehydrating and melting the paste by means of steam, - condensing the water vapours emanating from the stirred kettle, - flaking off the melt present in the stirred kettle by means of a roll and - filling the flakes produced during flaking-off into a container.

公开(公告)号：DE59004328D1

公开(公告)日：1994-03-03

申请号：DE59004328

申请日：1990-11-12

Applicant: BASF AG

Inventor： ASCHERL HERMANN DIPL ING ,  BORHO KLAUS DR ,  DIETRICH GERHARD DR ,  GRAMMATIS ZAFIRIOS DR ,  NIESSNER MANFRED DR ,  SARTOR KARL-HEINZ DIPL ING ,  SCHLINDWEIN HEINZ

IPC: B01J19/00 ,  B01J19/18 ,  C07C213/00 ,  C07C213/02 ,  C07C219/08 ,  C07C231/12 ,  C07C233/38

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.