公开(公告)号：DE10260084A1

公开(公告)日：2004-07-01

申请号：DE10260084

申请日：2002-12-19

Applicant: BASF AG

Inventor： SOHN MARTIN ,  STROEFER ECKHARD ,  NEVEJANS FILIP ,  PENZEL ULRICH ,  PALLASCH HANS-JUERGEN ,  ABEEL PETER VAN DEN ,  DEBERDT FILIP ,  JACOBS JAN D ,  MACKENROTH WOLFGANG

IPC: C01B7/07 ,  C01B32/80 ,  C07C263/10 ,  C07C263/20 ,  C01B31/28

Abstract: The invention relates to a process for the partial or complete separation of a mixture comprising hydrogen chloride and phosgene, possibly solvents and possibly low boilers and inerts as are typically obtained in the preparation of isocyanates by reaction of amines with phosgene, which comprises firstly carrying out a partial or complete condensation of phosgene, then a distillation or stripping step in a column to remove the hydrogen chloride from the bottom product phosgene and subsequently a scrub of the top product hydrogen chloride by means of the process solvent to absorb the phosgene in the process solvent. An after-purification by means of adsorption on activated carbon or by another suitable method can subsequently be carried out to remove solvent residues.

公开(公告)号：DE59907200D1

公开(公告)日：2003-11-06

申请号：DE59907200

申请日：1999-04-12

Applicant: BASF AG

Inventor： PENZEL ULRICH ,  SCHARR VOLKER ,  STAROSTA DIETER ,  BOESEL HILMAR ,  STROEFER ECKHARD ,  PFEFFINGER JOACHIM ,  POPLOW FRANK ,  DOSCH JUERGEN ,  SCHWARZ VOLKMAR ,  NAEUMANN FRITZ ,  VAN DEN ABEEL PETER ,  JACOBS JAN ,  NEVEJANS FILIP ,  VAN PEE WILLY

IPC: C07C263/10 ,  C07C263/20 ,  C07C265/14

Abstract: In a process for preparing mixtures of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates having a reduced content of chlorinated by-products and a reduced iodine color number by two-stage reaction of the corresponding mixtures of diphenylmethanediamines and polyphenylpolymethylenepolyamines with phosgene in the presence of at least one inert organic solvent at elevated temperature, separation of the excess phosgene and solvent after the phosgenation is complete and thermal treatment of the reaction product, the mass ratios of phosgene to hydrogen chloride in the residence time apparatus of the second stage of the phosgenation are at the same time 10-30:1 in the liquid phase and 1-10:1 in the gas phase.

公开(公告)号：DE50003380D1

公开(公告)日：2003-09-25

申请号：DE50003380

申请日：2000-06-16

Applicant: BASF AG

Inventor： REIF MARTIN ,  VAN DEN ABEEL PETER ,  NEVEJANS FILIP ,  SCHWARZ VOLKMAR ,  PENZEL ULRICH ,  SCHARR VOLKER

IPC: C07C263/10 ,  C07C265/14 ,  C08G18/76

Abstract: A process is provided for preparing light-colored isocyanates which can be used for preparing urethane compounds, in particular polyurethanes, for example polyurethane foams.

公开(公告)号：DE19736975A1

公开(公告)日：1999-03-04

申请号：DE19736975

申请日：1997-08-25

Applicant: BASF AG

Inventor： REIF MARTIN DR ,  KRAUS RUPERT DR ,  FLICK KLEMENS DR ,  SCHWAB EKKEHARD DR ,  TESCH HELMUT DR ,  BRUCHMANN BERND DR ,  SEYFERT WILFRIED DR ,  NEVEJANS FILIP ,  ABEEL PETER VAN DEN

IPC: C07C263/10 ,  C07C263/20 ,  C07C265/14 ,  C08G18/76 ,  C07C263/18 ,  C08G18/79

Abstract: Solutions containing at least an isocyanate (I) are prepared by treatment with hydrogen, without the formation of an over pressure after the phosgenation step and prior to separation of the solvent.

公开(公告)号：DE50304616D1

公开(公告)日：2006-09-21

申请号：DE50304616

申请日：2003-12-13

Applicant: BASF AG

Inventor： SOHN MARTIN ,  STROEFER ECKHARD ,  NEVEJANS FILIP ,  PENZEL ULRICH ,  PALLASCH HANS-JUERGEN ,  VAN DEN ABEEL PETER ,  DEBERDT FILIP ,  JACOBS JAN D ,  MACKENROTH WOLFGANG

IPC: C07C263/20

Abstract: The invention relates to a process for preparing isocyanates by reaction of amines with phosgene in the presence of inert organic solvents in a reactor and subsequent work-up of the reaction mixture leaving the reactor, wherein the solvent is separated off in a two-stage or multistage, preferably two-stage, distillation process in which the solvent is separated off at a pressure of 0.1-15 bar in a first apparatus and at 1-900 mbar in a second apparatus or further apparatuses, with the heat of condensation of the solvent vapor from the first apparatus being used for partial or complete vaporization of solvent in the second apparatus.

公开(公告)号：DE10260082A1

公开(公告)日：2004-07-01

申请号：DE10260082

申请日：2002-12-19

Applicant: BASF AG

Inventor： SOHN MARTIN ,  STROEFER ECKHARD ,  NEVEJANS FILIP ,  PENZEL ULRICH ,  PALLASCH HANS-JUERGEN ,  LEUTHOLD RENE ,  BRODHAGEN ANDREAS ,  WOELFERT ANDREAS ,  MACKENROTH WOLFGANG ,  MAURER MARKUS

IPC: C07C263/10 ,  C07C265/14

Abstract: The invention relates to a process for preparing polyisocyanates by reacting organic amines with phosgene, wherein the reaction is carried out in at least three stages, with the first stage being carried out in a mixing apparatus, the second stage in at least one residence apparatus and the third stage in at least one separation apparatus and the pressure in each successive stage being lower than that in the previous stage.

公开(公告)号：AT247635T

公开(公告)日：2003-09-15

申请号：AT00943828

申请日：2000-06-16

Applicant: BASF AG

Inventor： REIF MARTIN ,  VAN DEN ABEEL PETER ,  NEVEJANS FILIP ,  SCHWARZ HANS VOLKMAR ,  PENZEL ULRICH ,  SCHARR VOLKER

IPC: C07C263/10 ,  C07C265/14 ,  C08G18/76

Abstract: A process is provided for preparing light-colored isocyanates which can be used for preparing urethane compounds, in particular polyurethanes, for example polyurethane foams.

公开(公告)号：DE19817691A1

公开(公告)日：1999-10-28

申请号：DE19817691

申请日：1998-04-21

Applicant: BASF AG

Inventor： PENZEL ULRICH ,  SCHARR VOLKER ,  STAROSTA DIETER ,  BOESEL HILMAR ,  STROEFER ECKHARD ,  PFEFFINGER JOACHIM ,  ABEEL PETER VAN DEN ,  JACOBS JAN ,  NEVEJANS FILIP ,  POPLOW FRANK ,  DOSCH JUERGEN ,  SCHWARZ HANS VOLKMAR ,  NAEUMANN FRITZ ,  PEE WILLY VAN

IPC: C07C263/10 ,  C07C263/20 ,  C07C265/14

Abstract: Surprisingly, the drawbacks of previous processes for the preparation of mixtures containing diphenylmethanediisocyanate and polyphenylene-polymethylene-polyisocyanate, e.g. high cost, excessive HCl stripping time, can be avoided by a two-stage reaction of corresponding mixtures containing diphenylmethane-diamine and polyphenylene-polymethylene-polyamine with phosgene in the presence of inert organic solvent. Mixtures containing diphenylmethanediisocyanate and polyphenylene-polymethylene-polyisocyanate (PMDI) having a decreased content of chlorinated side product and decreased iodine colour index are obtained by two-stage reaction of corresponding mixtures containing diphenylmethanediamine and polyphenylene-polymethylene-polyamine (PMDA) with phosgene in the presence of at least one inert organic solvent. The weight ratio of phosgene to HCl in the dwell time apparatus of the second phosgenation stage is (10-30):1 in the liquid phase and (1-10):1 in the gas phase. An Independent claim is included for mixtures containing diphenylmethanediisocyanate and PMDI obtainable by the above process.

公开(公告)号：MX9704810A

公开(公告)日：1998-07-31

申请号：MX9704810

申请日：1997-06-26

Applicant: BASF AG

Inventor： KRAUS RUPERT ,  TESCH HELMUT ,  BRUCHMANN BERND ,  SEYFERT WILFRIED ,  NEVEJANS FILIP ,  ABEEL PETER VAN DEN

IPC: C07C263/10 ,  C07C263/18 ,  C07C263/20 ,  C07C265/00 ,  C08G18/70 ,  C08G101/00 ,  C08G18/02

Abstract: Es un proceso para la preparacion de soluciones que contienen al menos isocianato, la solucion escribe definida se somete a un tratamiento con hidrogeno después de la fosgenacion y antes de la remocion completa del solvente y del fosgeno residual. Se ofrece un proceso para la preparacion de isocianatos o bien mezclas de isocianatos y los isocianatos preparados de esta forma pueden emplearse para la preparacion de poliuretanos, particularmente espumas de poliuretano.

公开(公告)号：PT1575908E

公开(公告)日：2006-12-29

申请号：PT03785813

申请日：2003-12-13

Applicant: BASF AG

Inventor： PENZEL ULRICH ,  MARTIN SOHN DR ,  ABEEL PETER VAN DEN ,  JACOBS JAN D ,  STROEFER ECKHARD ,  NEVEJANS FILIP ,  PALLASCH HANS-JUERGEN ,  DEBERDT FILIP ,  MACKENROTH WOLFGANG

IPC: C07C263/20