公开(公告)号：DE3200559A1

公开(公告)日：1983-07-21

申请号：DE3200559

申请日：1982-01-12

Applicant: BASF AG

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

IPC: C07C125/04

公开(公告)号：ES2109959T3

公开(公告)日：1998-02-01

申请号：ES92112212

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

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：DE59208991D1

公开(公告)日：1997-12-04

申请号：DE59208991

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：DE59303105D1

公开(公告)日：1996-08-08

申请号：DE59303105

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：DE3468862D1

公开(公告)日：1988-02-25

申请号：DE3468862

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

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.

公开(公告)号：CA1215379A

公开(公告)日：1986-12-16

申请号：CA466428

申请日：1984-10-26

Applicant: BASF AG

Inventor： MATTNER OTTO ,  MERGER FRANZ ,  TOWAE FRIEDRICH

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

Abstract: PROCESS FOR THE PREPARATION OF ISOCYANATES THROUGH THE THERMAL CLEAVAGE OF URETHANES 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.