公开(公告)号：AT159714T

公开(公告)日：1997-11-15

申请号：AT92112212

申请日：1992-07-17

Applicant: BASF AG

Inventor： SCHWARZ HANS VOLKMAR DR ,  OTTERBACH ANDREAS DR ,  MATTNER OTTO ,  MERGER FRANZ DR ,  SCHWARZ WOLFGANG DR ,  BRANDT ECKHARDT DR ,  MAGNUSSEN PETER DR ,  MINGES ROLAND DR

IPC: B01J6/00 ,  C07C263/04 ,  C07C265/00 ,  C07C271/06

Abstract: A reactor for thermal cleavage of monofunctional and polyfunctional carbamic acid esters to the corresponding isocyanates and the hydroxyl components in the liquid phase, in which the geometry of the reactor, characterised by the degassing surface in proportion to the volume and the arrangement of the heating surfaces, makes possible the cleavage in a two-phase mixture which contains over 50% volumetric gas content.

公开(公告)号：CA2094484C

公开(公告)日：1997-10-07

申请号：CA2094484

申请日：1993-04-20

Applicant: BASF AG

Inventor： OTTERBACH ANDREAS ,  SCHWARZ HANS VOLKMAR ,  MERGER FRANZ ,  MAGNUSSEN PETER ,  SCHWARZ WOLFGANG ,  BRANDT ECKHARDT ,  MATTNER OTTO

IPC: C08G18/72 ,  C07C263/00 ,  C07C263/04 ,  C07C263/20 ,  C07C265/00 ,  C07C265/04 ,  C07C265/10 ,  C07C265/14 ,  C08G71/00 ,  C08G71/04

Abstract: A multistep process for the continuous preparation of organic polyisocyanates, preferably aliphatic or cycloaliphatic diisocyanates, by reacting the corresponding organic polyamines with carbonic acid derivatives and alcohols to give monomeric polyurethanes and pyrolyzing the latter involves separating the resultant polyisocyanates and worthless residues in certain reaction steps and recycling the reusable by-products into earlier steps.

公开(公告)号：AT139994T

公开(公告)日：1996-07-15

申请号：AT93105635

申请日：1993-04-06

Applicant: BASF AG

Inventor： OTTERBACH ANDREAS DR ,  SCHWARZ HANS VOLKMAR DR ,  MERGER FRANZ DR ,  SCHWARZ WOLFGANG DR ,  BRANDT ECKHARDT DR ,  MAGNUSSEN PETER DR ,  MATTNER OTTO

IPC: C08G18/72 ,  C07C263/00 ,  C07C263/04 ,  C07C263/20 ,  C07C265/00 ,  C07C265/04 ,  C07C265/10 ,  C07C265/14 ,  C08G71/00 ,  C08G71/04

Abstract: The invention relates to a multi-step method for the continuous preparation of organic polyisocyanates, preferably aliphatic or cycloaliphatic diisocyanates, by conversion of the corresponding organic polyamines with carbonic acid derivatives and alcohols into monomeric polyurethanes and thermal cleavage thereof, in which the prepared polyiisocyanates and unutilizable residues are separated off in specific reaction steps and the reutilizable by-products are fed back into preliminary steps.

公开(公告)号：AT32060T

公开(公告)日：1988-02-15

申请号：AT84112671

申请日：1984-10-19

Applicant: BASF AG

Inventor： MATTNER OTTO ,  MERGER FRANZ DR ,  TOWAE FRIEDRICH DR

IPC: C07B43/10 ,  C07B31/00 ,  C07C67/00 ,  C07C69/00 ,  C07C241/00 ,  C07C263/04 ,  C07C265/00 ,  C07C265/04 ,  C07C265/12 ,  C07C118/00 ,  C07C119/042

公开(公告)号：DK0524554T3

公开(公告)日：1997-12-15

申请号：DK92112212

申请日：1992-07-17

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  OTTERBACH ANDREAS DR ,  SCHWARZ WOLFGANG DR ,  SCHWARZ HANS VOLKMAR DR ,  MATTNER OTTO ,  BRANDT ECKHARDT DR ,  MAGNUSSEN PETER DR ,  MINGES ROLAND DR

IPC: B01J6/00 ,  C07C263/04 ,  C07C265/00 ,  C07C271/06

Abstract: A reactor for thermal cleavage of monofunctional and polyfunctional carbamic acid esters to the corresponding isocyanates and the hydroxyl components in the liquid phase, in which the geometry of the reactor, characterised by the degassing surface in proportion to the volume and the arrangement of the heating surfaces, makes possible the cleavage in a two-phase mixture which contains over 50% volumetric gas content.

公开(公告)号：DK0566925T3

公开(公告)日：1996-07-29

申请号：DK93105635

申请日：1993-04-06

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  OTTERBACH ANDREAS DR ,  SCHWARZ WOLFGANG DR ,  MATTNER OTTO ,  BRANDT ECKHARDT DR ,  MAGNUSSEN PETER DR ,  SCHWARZ HANS VOLKMAR DR

IPC: C08G18/72 ,  C07C263/00 ,  C07C263/04 ,  C07C263/20 ,  C07C265/00 ,  C07C265/04 ,  C07C265/10 ,  C07C265/14 ,  C08G71/00 ,  C08G71/04

Abstract: The invention relates to a multi-step method for the continuous preparation of organic polyisocyanates, preferably aliphatic or cycloaliphatic diisocyanates, by conversion of the corresponding organic polyamines with carbonic acid derivatives and alcohols into monomeric polyurethanes and thermal cleavage thereof, in which the prepared polyiisocyanates and unutilizable residues are separated off in specific reaction steps and the reutilizable by-products are fed back into preliminary steps.

公开(公告)号：DE4213099A1

公开(公告)日：1993-10-28

申请号：DE4213099

申请日：1992-04-21

Applicant: BASF AG

Inventor： OTTERBACH ANDREAS DR ,  SCHWARZ HANS VOLKMAR DR ,  MERGER FRANZ DR ,  SCHWARZ WOLFGANG DR ,  BRANDT ECKHARDT DR ,  MAGNUSSEN PETER DR ,  MATTNER OTTO

IPC: C08G18/72 ,  C07C263/00 ,  C07C263/04 ,  C07C263/20 ,  C07C265/00 ,  C07C265/04 ,  C07C265/10 ,  C07C265/14 ,  C08G71/00 ,  C08G71/04

Abstract: The invention relates to a multi-step method for the continuous preparation of organic polyisocyanates, preferably aliphatic or cycloaliphatic diisocyanates, by conversion of the corresponding organic polyamines with carbonic acid derivatives and alcohols into monomeric polyurethanes and thermal cleavage thereof, in which the prepared polyiisocyanates and unutilizable residues are separated off in specific reaction steps and the reutilizable by-products are fed back into preliminary steps.

公开(公告)号：DE4124671A1

公开(公告)日：1993-01-28

申请号：DE4124671

申请日：1991-07-25

Applicant: BASF AG

Inventor： SCHWARZ HANS VOLKMAR DR ,  OTTERBACH ANDREAS DR ,  MATTNER OTTO ,  MERGER FRANZ DR ,  SCHWARZ WOLFGANG DR ,  BRANDT ECKHARDT DR ,  MAGNUSSEN PETER DR ,  MINGES ROLAND DR

IPC: B01J6/00 ,  C07C263/04 ,  C07C265/00 ,  C07C271/06

Abstract: A reactor for thermal cleavage of monofunctional and polyfunctional carbamic acid esters to the corresponding isocyanates and the hydroxyl components in the liquid phase, in which the geometry of the reactor, characterised by the degassing surface in proportion to the volume and the arrangement of the heating surfaces, makes possible the cleavage in a two-phase mixture which contains over 50% volumetric gas content.

公开(公告)号：DE3269747D1

公开(公告)日：1986-04-10

申请号：DE3269747

申请日：1982-12-16

Applicant: BASF AG

Inventor： MATTNER OTTO ,  MERGER FRANZ DR ,  NESTLER GERHARD DR ,  TOWAE FRIEDRICH DR

IPC: C07C125/04

公开(公告)号：DE3339300A1

公开(公告)日：1985-05-09

申请号：DE3339300

申请日：1983-10-29

Applicant: BASF AG

Inventor： MATTNER OTTO ,  MERGER FRANZ DR ,  TOWAE FRIEDRICH DR

IPC: C07B43/10 ,  C07B31/00 ,  C07C67/00 ,  C07C69/00 ,  C07C241/00 ,  C07C263/04 ,  C07C265/00 ,  C07C265/04 ,  C07C265/12 ,  C07C119/042 ,  C07C119/048 ,  C07C118/00

Abstract: A process for the pyrolysis of mono-, di-, and polyurethanes to the corresponding mono-, di-, and polyisocyanates wherein the urethane to be cleaved is heated under pressure and sprayed through a nozzle into a pyrolysis chamber maintained at reduced pressure. The isocyanate and alcohol cleavage products are separated by fractional condensation.