公开(公告)号：DE19523851A1

公开(公告)日：1997-01-02

申请号：DE19523851

申请日：1995-06-30

Applicant: BASF AG

Inventor： SCHERZER DIETRICH DR ,  BRUCHMANN BERND DR ,  MINGES ROLAND DR ,  KELLER PETER DR ,  PEE WILLY VAN DR ,  HEIDER WOLFGANG ,  POHL SIEGMUND DR ,  OTTO BERNHARD DR ,  JACOBS PAUL DR ,  SEYFERT WILFRIED DR

IPC: C07C263/10 ,  C07C263/20 ,  C07C265/12 ,  C07C265/14 ,  C07C263/18 ,  C08G18/76

Abstract: Prodn. of mixts. of diphenylmethanedi-isocyanates and polyphenyl-polymethylene-polyisocyanates (i.e. crude MDI) with a low iodine number and a low chlorine content comprises (a) reacting the corresp. mixts. of diamines and polyamines (MDA) with phosgene in presence of inert solvent(s) at elevated temp., (b) removing excess phosgene and solvent and (c) thermal treatment of the prod.. After phosgenation (a), an effective amt. of a mixt. (I) of water and mono- or polyhydric polyoxyalkylene alcohol(s) (II) is added to the reaction mixt. in the presence or absence of phosgene.

公开(公告)号：DK0597382T3

公开(公告)日：1996-08-12

申请号：DK93117851

申请日：1993-11-04

Applicant: BASF AG

Inventor： LEHRICH FRIEDHELM DR ,  POHL SIEGMUND ,  BRUCHMANN BERND DR ,  TESCH HELMUT DR ,  MINGES ROLAND DR ,  SWOBODA JOHANN DR ,  GENZ MANFRED DR ,  SCHOLZ GUENTER DR ,  STREU JOACHIM DR

IPC: C07C265/10 ,  C07C265/12 ,  C07C267/00 ,  C08G18/00 ,  C08G18/02 ,  C08G18/71 ,  C08K5/29

Abstract: The invention relates to novel 4,4'-disubstituted bis(2,6-diisopropylphenyl)carbodiimides of the formula (I) in which R is a 1-methyl-1-phenylethyl, phenoxy or tert-butyl radical, to a process for their preparation and to their use as stabilisers with respect to the hydrolytic degradation of ester group-containing products of addition and condensation polymerisation, and to the novel compounds which can be used to prepare them, namely 4-(1-methyl-1-phenylethyl)-2,6-diisopropylphenyl, 4-phenoxy-2,6-diisopropylphenyl and 4-tert-butyl-2,6-diisopropylphenyl isocyanates.

公开(公告)号：DE59301439D1

公开(公告)日：1996-02-29

申请号：DE59301439

申请日：1993-06-02

Applicant: BASF AG

Inventor： BRUCHMANN BERND DR ,  MINGES ROLAND DR ,  SCHADE CHRISTIAN DR

IPC: B01J31/06 ,  C07B61/00 ,  C07C263/16 ,  C07C265/14 ,  C07D229/00 ,  C08F222/08 ,  C08F226/06 ,  C08G18/79

Abstract: The invention relates to a process for the preparation of polyisocyanates containing uretdione groups by catalytic dimerisation of monomeric isocyanates, polymers bearing imidazole groups being employed as catalysts.

公开(公告)号：AT122034T

公开(公告)日：1995-05-15

申请号：AT91102593

申请日：1991-02-22

Applicant: BASF AG

Inventor： SCHERZER DIETRICH DR ,  MINGES ROLAND DR ,  LANGER WERNER DR ,  BRUCHMANN BERND DR ,  HEIDER WOLFGANG ,  KELLER PETER DR ,  SCHMITT ARNOLD ,  VAN PEE WILLY DR

IPC: C07C263/18 ,  C07C263/20 ,  C07C265/14

Abstract: The invention relates to a process for the preparation of mixtures of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates (crude MDI) having a reduced iodine colour value by reaction of corresponding mixtures of diphenylmethanediamines and polyphenylpolymethylenepolyamines with phosgene in the presence of at least one inert organic solvent at elevated temperature, in which, after phosgenation of the reaction mixture is complete, low-molecular-weight alkanols, polyhydric alcohols, preferably di- to octahydric alcohols having a molecular weight of 60 to 350, or mixtures thereof are incorporated in an effective amount, advantageously in an amount of 0.01 to 5% by weight, relative to the crude MDI weight, the phosgene and the inert organic solvent are then separated off, 0 to 5% by weight, relative to the crude MDI weight, of at least one phenol-based antioxidant and/or aryl phosphite are added to the reaction product, and the reaction mixture is subjected to a heat treatment.

公开(公告)号：DE4318979A1

公开(公告)日：1994-12-15

申请号：DE4318979

申请日：1993-06-08

Applicant: BASF AG

Inventor： POHL SIEGMUND ,  LEHRICH FRIEDHELM DR ,  GENZ MANFRED DR ,  BRUCHMANN BERND DR ,  TESCH HELMUT DR ,  MINGES ROLAND DR ,  STREU JOACHIM DR

IPC: C07B61/00 ,  C07C267/00 ,  C07C271/20 ,  C07C273/18 ,  C07C275/14 ,  C07C275/24 ,  C07C275/26 ,  C07C275/40 ,  C08G18/02 ,  C08G18/28 ,  C08G18/66 ,  C08G18/79 ,  C08K5/29 ,  C08L75/04 ,  C08G73/00 ,  C09K15/22 ,  C08L67/00 ,  C08L75/00 ,  C08L77/12

Abstract: The subjects of the invention are novel carbodiimides and/or oligomeric polycarbodiimides having terminal isocyanate, urethane and/or urea groups, obtainable e.g. by condensation with elimination of carbon dioxide of 1,3-bis(1-methyl-1-isocyanatoethyl)benzene and thereafter optionally partial or complete reaction of the free isocyanate groups of the resulting (poly)carbodiimides with aliphatic, cycloaliphatic or araliphatic amines, alcohols and/or alkoxypolyoxyalkylene alcohols, a process for their preparation and their use as a stabiliser against the hydrolytic degradation of polyaddition and polycondensation products containing ester groups.

公开(公告)号：DE59102818D1

公开(公告)日：1994-10-13

申请号：DE59102818

申请日：1991-06-27

Applicant: BASF AG

Inventor： SCHERZER DIETRICH DR ,  MINGES ROLAND DR ,  BRUCHMANN BERND DR ,  HEIDER WOLFGANG ,  VAN PEE WILLY DR ,  KELLER PETER DR

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

Abstract: The invention relates to a process for the preparation of mixtures of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates (crude MDI) having a reduced iodine colour value by reacting the corresponding mixtures of diphenylmethanediamines and polyphenylpolymethylenepolyamines with phosgene in the presence of at least one inert organic solvent at an elevated temperature, wherein, after the end of the phosgenation, at least one monohydric or polyhydric polyoxyalkylene alcohol, preferably having a functionality of 2 to 3, and advantageously having a hydroxyl number of 20 to 1,800, or a mixture thereof is incorporated into the reaction mixture in an effective amount, advantageously in an amount of 0.1 to 10% by weight, based on the weight of the crude MDI, the phosgene and the inert organic solvent are then separated off, optionally up to 5% by weight, based on the weight of the crude MDI, of at least one phenol-based antioxidant and/or aryl phosphite are added to the reaction product and the reaction mixture is subjected to a thermal treatment.

公开(公告)号：DE4300774A1

公开(公告)日：1994-07-21

申请号：DE4300774

申请日：1993-01-14

Applicant: BASF AG

Inventor： BRUCHMANN BERND DR ,  MINGES ROLAND DR ,  HEIDER WOLFGANG ,  OTTO BERNHARD DR ,  SCHERZER DIETRICH DR ,  SEYFERT WILFRIED DR ,  PEE WILLY VAN DR

IPC: C07C263/10 ,  C08G18/70 ,  C08G18/76 ,  C07C265/14

Abstract: In the prodn. of mixts. (crude MDI) (I) of diphenylmethane diisocyanates and polyphenyl-polymethylene polyisocyanates by reacting corresp. mixts. of diphenylmethane diamines and polyphenyl-polymethylene polyamines with COCl2 in the presence of inert organic solvent(s) (II) at elevated temp., the I2 colour no. is reduced by adding phenols (III) after phosgenation and before sepg. excess COCl2 and (II) and heat treatment of the reaction prod.Pref. (III) may be mono- or polyhydric and pref. polycyclic. They are added in amts. of 0.001-10 (wt.%) w.r.t. (I) in the reaction mixt., pref. when the mixt. contains 0.01-3% COCl2.

公开(公告)号：DE4218539A1

公开(公告)日：1993-12-09

申请号：DE4218539

申请日：1992-06-05

Applicant: BASF AG

Inventor： BRUCHMANN BERND DR ,  MINGES ROLAND DR ,  SCHADE CHRISTIAN DR ,  STIEFENHOEFER KONRAD

IPC: C07B61/00 ,  C07D229/00 ,  C08F8/30 ,  C08F8/32 ,  C08G18/20 ,  C08G18/79 ,  C08G85/00

Abstract: The invention relates to polymeric, catalytically active compounds comprising polymer chains to which imidazole groups have been adducted at the ends or in the middle, to their preparation, and to their use as catalysts for the dimerization of isocyanates.

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：DE4118914A1

公开(公告)日：1992-12-10

申请号：DE4118914

申请日：1991-06-08

Applicant: BASF AG

Inventor： SCHERZER DIETRICH DR ,  MINGES ROLAND DR ,  KELLER PETER DR ,  PEE WILLY VAN DR

IPC: C07C263/10 ,  C07C265/14 ,  C08G18/72 ,  C08G18/76

Abstract: Mixts. (I) of the diisocyanates and polyisocyanates with reduced iodine number are prepd. by (1) reacting corresp. mixt. of diphenylamethane diamines and polyphenylpolymethylene polyamines with COCl2 in presence of at least one inert organic solvent at raised temp.. (2) after phosgenation, sepg. off excess COCl2 and solvent, and (3) heating. An effective amt. of Cl-contg. agent (II) which is a carboxylic acid chloride and/or chloroformate is incorporated after phosgenation has ended. USE/ADVANTAGE - (I) for prepn. of polyisocyanate polyaddn. prods., e.g., foams contg. urethane and opt. isocyanurate gps., also for isolation of 4,4'-diphenyl-methane diisocyanate (4,4'-MDI), intermediate for polyurethane elastomers, fibres, sealing compsns., adhesives, etc.. Light coloured (I), required for prodn. of light coloured polyaddn. prods., etc., are obtd. without addn. of water which increases corrosive action of Cl2, HCl, and COCl2 on appts. and could lead to leakage of toxic COCl2 or COCl2-contg. reaction mixt..