公开(公告)号：PT1053222E

公开(公告)日：2003-09-30

申请号：PT99906202

申请日：1999-01-26

Applicant: BASF AG

Inventor： STROFER ECKHARD ,  JACOBS JAN ,  SEYFERT WILFRIED ,  SCHWARZ HANS VOLKMAR ,  SCHWEERS OLAF ,  SCHARR VOLKER ,  PENZEL ULRICH

IPC: C07B61/00 ,  C07C209/78 ,  C07C211/45 ,  C07C211/50 ,  C07C263/10 ,  C07C265/14

Abstract: The production of methylene-di-phenylamine from aniline (A) and formaldehyde (F) with an acid catalyst (C) comprises placing (A) and possibly (C) in a reactor, feeding (F) and possibly (C) through a mixer into a circulation loop containing (A), possibly (C) and possibly (F), and heating to above 75 degrees C after adding at least 50% of the total (F). Independent claims are also included for: (a) mixtures containing methylene-di-phenylamine (MDA) obtained by this process; (b) a process for the production of polyisocyanates by phosgenation of these mixtures; (c) a process for the production of methylene-diphenylisocyanate (MDI) by phosgenation of MDA (obtained as above) at 50-150 degrees C and 0.5-10 bar, optionally in presence of inert solvent; (d) a process for the production of MDI comprising: (1) the semi-continuous process described above using a mol ratio of (A):(C) = (1:0.6)-(1:0.01) and a mol ratio of (A):(total F) = (1.7:1)-(7.2:1), in which the temperature of the circulating mixture is 20-75 degrees C and the mixture is heated for at least 0.2 hour at above 75 degrees C after adding at least 50% of the (F), (2) neutralization, (3) distillation of water and aniline, (4) phosgenation of the purified MDA as in (c) above, (5) removal of phosgene, hydrogen chloride and possibly solvent at below 150 degrees C under vacuum or inert gas, (6) removal of solvent at not above 1900 degrees C and (7) isolation of 2,2'-, 2,4'- and/or 4,4'-MDI and/or mixtures of at least two of these isomers by distillation at 2-50 mbar and 150-250 degrees C and/or by crystallization; and (e) polyisocyanates obtained by these processes.

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：DE59911344D1

公开(公告)日：2005-01-27

申请号：DE59911344

申请日：1999-01-26

Applicant: BASF AG

Inventor： STROEFER DR ,  JACOBS JAN D ,  SEYFERT DR ,  SCHWARZ DR ,  SCHWEERS DR ,  SCHARR VOLKER ,  PENZEL DR

IPC: C07B61/00 ,  C07C209/78 ,  C07C211/45 ,  C07C211/50 ,  C07C263/10 ,  C07C265/14

Abstract: The production of methylene-di-phenylamine from aniline (A) and formaldehyde (F) with an acid catalyst (C) comprises placing (A) and possibly (C) in a reactor, feeding (F) and possibly (C) through a mixer into a circulation loop containing (A), possibly (C) and possibly (F), and heating to above 75 degrees C after adding at least 50% of the total (F). Independent claims are also included for: (a) mixtures containing methylene-di-phenylamine (MDA) obtained by this process; (b) a process for the production of polyisocyanates by phosgenation of these mixtures; (c) a process for the production of methylene-diphenylisocyanate (MDI) by phosgenation of MDA (obtained as above) at 50-150 degrees C and 0.5-10 bar, optionally in presence of inert solvent; (d) a process for the production of MDI comprising: (1) the semi-continuous process described above using a mol ratio of (A):(C) = (1:0.6)-(1:0.01) and a mol ratio of (A):(total F) = (1.7:1)-(7.2:1), in which the temperature of the circulating mixture is 20-75 degrees C and the mixture is heated for at least 0.2 hour at above 75 degrees C after adding at least 50% of the (F), (2) neutralization, (3) distillation of water and aniline, (4) phosgenation of the purified MDA as in (c) above, (5) removal of phosgene, hydrogen chloride and possibly solvent at below 150 degrees C under vacuum or inert gas, (6) removal of solvent at not above 1900 degrees C and (7) isolation of 2,2'-, 2,4'- and/or 4,4'-MDI and/or mixtures of at least two of these isomers by distillation at 2-50 mbar and 150-250 degrees C and/or by crystallization; and (e) polyisocyanates obtained by these processes.

公开(公告)号：ES2206268T3

公开(公告)日：2004-05-16

申请号：ES00943828

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：PT1187808E

公开(公告)日：2003-12-31

申请号：PT00943828

申请日：2000-06-16

Applicant: BASF AG

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

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：DE59905323D1

公开(公告)日：2003-06-05

申请号：DE59905323

申请日：1999-01-26

Applicant: BASF AG

Inventor： STROEFER ECKHARD ,  JACOBS JAN ,  SEYFERT WILFRIED ,  SCHWARZ VOLKMAR ,  SCHWEERS OLAF ,  SCHARR VOLKER ,  PENZEL ULRICH

IPC: C07B61/00 ,  C07C209/78 ,  C07C211/45 ,  C07C211/50 ,  C07C263/10 ,  C07C265/14

Abstract: The production of methylene-di-phenylamine from aniline (A) and formaldehyde (F) with an acid catalyst (C) comprises placing (A) and possibly (C) in a reactor, feeding (F) and possibly (C) through a mixer into a circulation loop containing (A), possibly (C) and possibly (F), and heating to above 75 degrees C after adding at least 50% of the total (F). Independent claims are also included for: (a) mixtures containing methylene-di-phenylamine (MDA) obtained by this process; (b) a process for the production of polyisocyanates by phosgenation of these mixtures; (c) a process for the production of methylene-diphenylisocyanate (MDI) by phosgenation of MDA (obtained as above) at 50-150 degrees C and 0.5-10 bar, optionally in presence of inert solvent; (d) a process for the production of MDI comprising: (1) the semi-continuous process described above using a mol ratio of (A):(C) = (1:0.6)-(1:0.01) and a mol ratio of (A):(total F) = (1.7:1)-(7.2:1), in which the temperature of the circulating mixture is 20-75 degrees C and the mixture is heated for at least 0.2 hour at above 75 degrees C after adding at least 50% of the (F), (2) neutralization, (3) distillation of water and aniline, (4) phosgenation of the purified MDA as in (c) above, (5) removal of phosgene, hydrogen chloride and possibly solvent at below 150 degrees C under vacuum or inert gas, (6) removal of solvent at not above 1900 degrees C and (7) isolation of 2,2'-, 2,4'- and/or 4,4'-MDI and/or mixtures of at least two of these isomers by distillation at 2-50 mbar and 150-250 degrees C and/or by crystallization; and (e) polyisocyanates obtained by these processes.

公开(公告)号：HU0201848A2

公开(公告)日：2002-09-28

申请号：HU0201848

申请日：2000-06-16

Applicant: BASF AG

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

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：DE19928741A1

公开(公告)日：2000-12-28

申请号：DE19928741

申请日：1999-06-23

Applicant: BASF AG

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

IPC: C07C263/10 ,  C07C265/14 ,  C08G18/76 ,  C07C265/00 ,  C08G18/00 ,  C08G71/00

Abstract: Isocyanates (I) are prepared by reaction of an amine or a mixture of at least two amines with phosgene that contains less than 50 ppm bromine and/or iodine in molecular or bound form.

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：AU2621799A

公开(公告)日：1999-08-23

申请号：AU2621799

申请日：1999-01-26

Applicant: BASF AG

Inventor： STROFER ECKHARD ,  JACOBS JAN ,  SEYFERT WILFRIED ,  SCHWARZ HANS VOLKMAR ,  SCHWEERS OLAF ,  SCHARR VOLKER ,  PENZEL ULRICH

IPC: C07B61/00 ,  C07C209/78 ,  C07C211/45 ,  C07C211/50 ,  C07C263/10 ,  C07C265/14

Abstract: The production of methylene-di-phenylamine from aniline (A) and formaldehyde (F) with an acid catalyst (C) comprises placing (A) and possibly (C) in a reactor, feeding (F) and possibly (C) through a mixer into a circulation loop containing (A), possibly (C) and possibly (F), and heating to above 75 degrees C after adding at least 50% of the total (F). Independent claims are also included for: (a) mixtures containing methylene-di-phenylamine (MDA) obtained by this process; (b) a process for the production of polyisocyanates by phosgenation of these mixtures; (c) a process for the production of methylene-diphenylisocyanate (MDI) by phosgenation of MDA (obtained as above) at 50-150 degrees C and 0.5-10 bar, optionally in presence of inert solvent; (d) a process for the production of MDI comprising: (1) the semi-continuous process described above using a mol ratio of (A):(C) = (1:0.6)-(1:0.01) and a mol ratio of (A):(total F) = (1.7:1)-(7.2:1), in which the temperature of the circulating mixture is 20-75 degrees C and the mixture is heated for at least 0.2 hour at above 75 degrees C after adding at least 50% of the (F), (2) neutralization, (3) distillation of water and aniline, (4) phosgenation of the purified MDA as in (c) above, (5) removal of phosgene, hydrogen chloride and possibly solvent at below 150 degrees C under vacuum or inert gas, (6) removal of solvent at not above 1900 degrees C and (7) isolation of 2,2'-, 2,4'- and/or 4,4'-MDI and/or mixtures of at least two of these isomers by distillation at 2-50 mbar and 150-250 degrees C and/or by crystallization; and (e) polyisocyanates obtained by these processes.