公开(公告)号：ZA9605880B

公开(公告)日：1998-01-12

申请号：ZA9605880

申请日：1996-07-11

Applicant: BASF AG

Inventor： HEIDER WOLFGANG ,  WOLFF STEFAN ,  BRUCHMANN BERND ,  BITTINS KLAUS

IPC: C07C273/00 ,  B01J10/00 ,  B01J19/00 ,  B01J19/18 ,  C07B61/00 ,  C07C273/16 ,  C07C273/18 ,  C07C275/62 ,  C08G18/78 ,  C07C ,  C08G

CPC classification number: C08G18/7831 ,  B01J19/0013 ,  B01J19/006 ,  B01J19/0066 ,  B01J19/18 ,  B01J2219/00094 ,  B01J2219/00768 ,  B01J2219/00777 ,  B01J2219/00779 ,  B01J2219/185 ,  C07C273/1863 ,  C07C273/1872 ,  C07C275/62

公开(公告)号：ES2145471T3

公开(公告)日：2000-07-01

申请号：ES96925694

申请日：1996-07-09

Applicant: BASF AG

Inventor： HEIDER WOLFGANG ,  WOLFF STEFAN ,  BRUCHMANN BERND ,  BITTINS KLAUS

IPC: C07C273/00 ,  B01J10/00 ,  B01J19/00 ,  B01J19/18 ,  C07B61/00 ,  C07C273/16 ,  C07C273/18 ,  C07C275/62 ,  C08G18/78

Abstract: PCT No. PCT/EP96/03003 Sec. 371 Date Mar. 9, 1998 Sec. 102(e) Date Mar. 9, 1998 PCT Filed Jul. 9, 1996 PCT Pub. No. WO97/03044 PCT Pub. Date Jan. 30, 1997In a process and an apparatus for preparing (cyclo)aliphatic polyisocyanates containing biuret groups from (cyclo)aliphatic diisocyanates and steam or a substance capable of splitting off water as reactants which are mixed with one another in a stirred reactor, the reactants are passes in countercurrent through a cascade-type stirred reactor comprising at least two stages. The dispersion of the gaseous reactant in the liquid reactant is reinforced by baffles installed in the stirred reactor. As baffles, use is made of discs provided with central openings and arranged at a distance from one another and/or strip baffles running in the longitudinal direction of the stirred reactor.

公开(公告)号：DE59604897D1

公开(公告)日：2000-05-11

申请号：DE59604897

申请日：1996-07-09

Applicant: BASF AG

Inventor： HEIDER WOLFGANG ,  WOLFF STEFAN ,  BRUCHMANN BERND ,  BITTINS KLAUS

IPC: C07C273/00 ,  B01J10/00 ,  B01J19/00 ,  B01J19/18 ,  C07B61/00 ,  C07C273/16 ,  C07C273/18 ,  C07C275/62 ,  C08G18/78

Abstract: PCT No. PCT/EP96/03003 Sec. 371 Date Mar. 9, 1998 Sec. 102(e) Date Mar. 9, 1998 PCT Filed Jul. 9, 1996 PCT Pub. No. WO97/03044 PCT Pub. Date Jan. 30, 1997In a process and an apparatus for preparing (cyclo)aliphatic polyisocyanates containing biuret groups from (cyclo)aliphatic diisocyanates and steam or a substance capable of splitting off water as reactants which are mixed with one another in a stirred reactor, the reactants are passes in countercurrent through a cascade-type stirred reactor comprising at least two stages. The dispersion of the gaseous reactant in the liquid reactant is reinforced by baffles installed in the stirred reactor. As baffles, use is made of discs provided with central openings and arranged at a distance from one another and/or strip baffles running in the longitudinal direction of the stirred reactor.

公开(公告)号：FI941397A0

公开(公告)日：1994-03-25

申请号：FI941397

申请日：1994-03-25

Applicant: BASF AG

Inventor： ZEHNER PETER ,  BITTINS KLAUS ,  HAARDE WILHELM ,  EIDEN ULRICH ,  WOLFF DIETRICH ,  HERR MANFRED ,  HUPFER LEOPOLD

IPC: C07B61/00 ,  B01J31/02 ,  C07C67/36 ,  C07C69/06 ,  C07C

Abstract: Methyl formate is prepared by reaction of carbon monoxide and methanol at elevated pressure and elevated temperature in the presence of an alkali metal methoxide by A) mixing the starting substances in a mixing zone, partially allowing them to react, saturating the reaction solution with CO and B) carrying the reaction to completion in one or more subsequent reaction zones without addition of further starting compounds.

公开(公告)号：ZA965880B

公开(公告)日：1998-01-12

申请号：ZA965880

申请日：1996-07-11

Applicant: BASF AG

Inventor： HEIDER WOLFGANG ,  WOLFF STEFAN ,  BRUCHMANN BERND ,  BITTINS KLAUS

IPC: C07C273/00 ,  B01J10/00 ,  B01J19/00 ,  B01J19/18 ,  C07B61/00 ,  C07C273/16 ,  C07C273/18 ,  C07C275/62 ,  C08G18/78 ,  C07C ,  C08G

Abstract: PCT No. PCT/EP96/03003 Sec. 371 Date Mar. 9, 1998 Sec. 102(e) Date Mar. 9, 1998 PCT Filed Jul. 9, 1996 PCT Pub. No. WO97/03044 PCT Pub. Date Jan. 30, 1997In a process and an apparatus for preparing (cyclo)aliphatic polyisocyanates containing biuret groups from (cyclo)aliphatic diisocyanates and steam or a substance capable of splitting off water as reactants which are mixed with one another in a stirred reactor, the reactants are passes in countercurrent through a cascade-type stirred reactor comprising at least two stages. The dispersion of the gaseous reactant in the liquid reactant is reinforced by baffles installed in the stirred reactor. As baffles, use is made of discs provided with central openings and arranged at a distance from one another and/or strip baffles running in the longitudinal direction of the stirred reactor.

公开(公告)号：CA2223641A1

公开(公告)日：1997-01-30

申请号：CA2223641

申请日：1996-07-09

Applicant: BASF AG

Inventor： BITTINS KLAUS ,  BRUCHMANN BERND ,  WOLFF STEFAN ,  HEIDER WOLFGANG

IPC: C07C273/00 ,  B01J10/00 ,  B01J19/00 ,  B01J19/18 ,  C07B61/00 ,  C07C273/16 ,  C07C273/18 ,  C07C275/62 ,  C08G18/78

Abstract: A process and device are disclosed for preparing (cyclo)aliphatic biuret groups-containing polyisocyanates from (cyclo)aliphatic diisocyanates and steam or a dehydrating substance as reactives that are mixed with each other in a stirring reactor. The reactives flow in opposite current through a cascade-shaped stirring reactor with at least two stages. The distribution of the gaseous reactives in the liquid reactives is intensified by turbulencegenerating means built into the stirring reactor. Mutually spaced disks provided with central openings and/or turbulence-generating strips that extend in the longitudinal direction of the stirring reactor are used as turbulencegenerating means.

公开(公告)号：FI941397A

公开(公告)日：1994-09-26

申请号：FI941397

申请日：1994-03-25

Applicant: BASF AG

Inventor： ZEHNER PETER ,  BITTINS KLAUS ,  HAARDE WILHELM ,  EIDEN ULRICH ,  WOLFF DIETRICH ,  HERR MANFRED ,  HUPFER LEOPOLD

IPC: C07B61/00 ,  C07C67/36 ,  B01J31/02 ,  C07C69/06

Abstract: Methyl formate is prepared by reaction of carbon monoxide and methanol at elevated pressure and elevated temperature in the presence of an alkali metal methoxide by A) mixing the starting substances in a mixing zone, partially allowing them to react, saturating the reaction solution with CO and B) carrying the reaction to completion in one or more subsequent reaction zones without addition of further starting compounds.