公开(公告)号：DE50307816D1

公开(公告)日：2007-09-13

申请号：DE50307816

申请日：2003-04-09

Applicant: BASF AG

Inventor： STAROSTA DIETER ,  PFAB PETER ,  KRASE VOLKER ,  SCHMIDT ANDEAS ,  KLOETZER MATTHIAS ,  OTTERBACH ANDREAS

IPC: C07C263/04 ,  B01J6/00 ,  B01J10/00 ,  B01J19/00 ,  C07C265/14 ,  F28D9/00

公开(公告)号：CA2329655A1

公开(公告)日：1999-10-28

申请号：CA2329655

申请日：1999-04-12

Applicant: BASF AG

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

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

Abstract: The invention relates to a method for producing mixtures consisting of diphenylmethane diisocyanates and polyphenylene-polymethylene-polyisocyanates containing a reduced amount of chlorinated secondary products and with a reduced iodine colour index. According to said method, a two-stage reaction of the corresponding mixtures of diphenylmethane-diamines and polyphenylenepolymethylene polyamines with phosgene is carried out in the presence of at least one inert organic solvent at a high temperature. When the phosgenation is complete, the excess phosgene and solvent are separated off and the product of the reaction is treated with heat. The method is characterised in that the mass ratios of phosgene to hydrogen chloride in the detention apparatus in the second stage of phosgenation are simultaneously 10-30:1 in the liquid phase and 1-10:1 in the gas phase.

公开(公告)号：AT368644T

公开(公告)日：2007-08-15

申请号：AT03724984

申请日：2003-04-09

Applicant: BASF AG

Inventor： STAROSTA DIETER ,  PFAB PETER ,  KRASE VOLKER ,  SCHMIDT ANDEAS ,  KLOETZER MATTHIAS ,  OTTERBACH ANDREAS

IPC: C07C263/04 ,  B01J6/00 ,  B01J10/00 ,  B01J19/00 ,  C07C265/14 ,  F28D9/00

公开(公告)号：AU2003227583A1

公开(公告)日：2003-10-20

申请号：AU2003227583

申请日：2003-04-09

Applicant: BASF AG

Inventor： SCHMIDT ANDEAS ,  KLOTZER MATTHIAS ,  OTTERBACH ANDREAS ,  STAROSTA DIETER ,  PFAB PETER ,  KRASE VOLKER

IPC: B01J10/00 ,  B01J19/00 ,  C07C263/04 ,  C07C265/14 ,  F28D9/00 ,  B01J6/00

公开(公告)号：DE10111645A1

公开(公告)日：2002-09-19

申请号：DE10111645

申请日：2001-03-10

Applicant: BASF AG

Inventor： KLOETZER MATTHIAS ,  KRASE VOLKER ,  MORGENSCHWEIS KONRAD ,  PFAB PETER ,  SCHMIDT ANDREAS ,  STAROSTA DIETER

IPC: C07C263/04 ,  C07C265/14 ,  C08G18/08 ,  B01D3/00 ,  B01J19/24 ,  C07C263/18 ,  C08G18/22 ,  C08J11/04

公开(公告)号：DE10215778A1

公开(公告)日：2003-12-18

申请号：DE10215778

申请日：2002-04-10

Applicant: BASF AG

Inventor： STAROSTA DIETER ,  PFAB PETER ,  KRASE VOLKER ,  SCHMIDT ANDREAS ,  KLOETZER MATTHIAS ,  OTTERBACH ANDREAS

IPC: B01J10/00 ,  B01J19/00 ,  C07C263/04 ,  C07C265/14 ,  F28D9/00 ,  C07C27/00 ,  C07C29/00 ,  C07C263/12

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：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.