公开(公告)号：ES2167018T3

公开(公告)日：2002-05-01

申请号：ES97938925

申请日：1997-08-18

Applicant: BASF AG

Inventor： BRUCHMANN BERND ,  REIF MARTIN ,  HOFSCHEUER WERNER ,  JAHME JOACHIM ,  LANGER WERNER ,  RENZ HANS

IPC: C07C273/18 ,  C07C275/62 ,  C08G18/08 ,  C08G18/30 ,  C08G18/32 ,  C08G18/78

Abstract: A process for preparing biuret-functional polyisocyanates from at least one aliphatic or cycloaliphatic diisocyanate and from at least one amine or water or a mixture thereof as reactants involves mixing the reactants with one another in a mixing unit having a high shear action.

公开(公告)号：CA2211025A1

公开(公告)日：1996-08-22

申请号：CA2211025

申请日：1996-02-01

Applicant: BASF AG

Inventor： RENZ HANS ,  WOLFF STEFAN ,  BRUCHMANN BERND ,  LANGER WERNER ,  J HME JOACHIM ,  HEIDER WOLFGANG

IPC: C08G18/02 ,  C07C265/14 ,  C07C273/18 ,  C07C275/62 ,  C08G18/30 ,  C08G18/78

Abstract: A process for producing polyisocyanates containing one or more biuret groups, by reacting a) an aliphatic or cycloaliphatic isocyanate with several isocyanate groups (isocyanate a) with b) a tertiary alcohol or a mixture of water and a tertiary alcohol (biuretting agent b) at reaction temperature of 100 to 250~C, said process being characterized in that the reaction is conducted in the presence of c) a stabiliser (c) in which there are catalytic quantities of urea, ammonia, biuret, a urea derivative of the formula (I), in which R1, R2, R3 and R4 are hydrogen, C1-C10 alkyl or C5-C10 aryl, or a carbonic acid amide of formula (II) in which R5 is C1-C12 alkyl group, in which 1, 2 or 3 hydrogen atoms may be replaced by a (III) radical.

公开(公告)号：CA2268775C

公开(公告)日：2006-11-28

申请号：CA2268775

申请日：1997-10-16

Applicant: BASF AG

Inventor： CLOUDSDALE IAN S ,  SCHNEIDER HERMANN ,  HOKAMA TAKEO ,  LANGER WERNER

IPC: C07D405/04 ,  C07D239/52

Abstract: A process for preparation of substituted phthalides, heterocyclic phthalides and derivatives thereof of the formula I wherein A is phenyl or pyridyl; R is a carboxyl group; X and Y taken together represent = O; or X and R taken together may form a bridge, which process comprises reacting an aromatic carboxylic acid mono- or di-ani on with a reactive derivative of a pyrimidine carboxylic acid.

公开(公告)号：DE59705295D1

公开(公告)日：2001-12-13

申请号：DE59705295

申请日：1997-08-18

Applicant: BASF AG

Inventor： BRUCHMANN BERND ,  REIF MARTIN ,  HOFSCHEUER WERNER ,  JAEHME JOACHIM ,  LANGER WERNER ,  RENZ HANS ,  MOHRHARDT GUENTER ,  SCHIESSL MICHAEL

IPC: C07C273/18 ,  C07C275/62 ,  C08G18/08 ,  C08G18/30 ,  C08G18/32 ,  C08G18/78

Abstract: A process for preparing biuret-functional polyisocyanates from at least one aliphatic or cycloaliphatic diisocyanate and from at least one amine or water or a mixture thereof as reactants involves mixing the reactants with one another in a mixing unit having a high shear action.

公开(公告)号：CA2036538C

公开(公告)日：1996-04-16

申请号：CA2036538

申请日：1991-02-18

Applicant: BASF AG

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

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

Abstract: Mixtures of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates (crude MDI) having a reduced iodine color number are prepared by reacting the corresponding mixtures of diphenylmethanediamines and polyphenylpolymethylene-polyamines with phosgene in the presence of one or more inert organic solvents at elevated temperatures by a process in which low molecular weight alkanols, polyhydric alcohols, preferably dihydric to octahydric alcohols having a molecular weight of from 60 to 350, or mixtures thereof are incorporated in an effective amount, advantageously in an amount of from 0.01 to 5% by weight, based on the weight of crude MDI, into the reaction mixture after the end of the phosgenation, the phosgene and the inert organic solvent are then separated off, from 0 to 5% by weight, based on the weight of crude MDI, of one or more phenol-based antioxidants 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：ZA977399B

公开(公告)日：1999-02-18

申请号：ZA977399

申请日：1997-08-18

Applicant: BASF AG

Inventor： BRUCHMANN BERND ,  REIF MARTIN ,  HOFSCHEUER WERNER ,  JAEHME JOACHIM ,  LANGER WERNER ,  RENZ HANS ,  MOHRHARDT GUENTER ,  SCHIESSL MICHAEL

IPC: C07C273/18 ,  C07C275/62 ,  C08G18/08 ,  C08G18/30 ,  C08G18/32 ,  C08G18/78 ,  C08G ,  C09D ,  C08J

Abstract: A process for preparing biuret-functional polyisocyanates from at least one aliphatic or cycloaliphatic diisocyanate and from at least one amine or water or a mixture thereof as reactants involves mixing the reactants with one another in a mixing unit having a high shear action.

公开(公告)号：ES2119567T3

公开(公告)日：1998-10-01

申请号：ES96903959

申请日：1996-02-01

Applicant: BASF AG

Inventor： BRUCHMANN BERND ,  WOLFF STEFAN ,  HEIDER WOLFGANG ,  JAHME JOACHIM ,  LANGER WERNER ,  RENZ HANS

IPC: C08G18/02 ,  C07C265/14 ,  C07C273/18 ,  C07C275/62 ,  C08G18/30 ,  C08G18/78

Abstract: A process for the preparation of polyisocyanates which contain one or more biuret groups, by reacting a) an aliphatic or cycloaliphatic isocyanate containing two or more isocyanate groups (isocyanate a) with b) a tertiary alcohol or a mixture of water and a tertiary alcohol (biuretizing agent b) at from 100 to 250° C., which comprises carrying out the reaction in the presence c) of a stabilizer (c) which constitutes a catalytic amount of urea, ammonia, biuret, a urea derivative of the formula I in which R 1 , R 2 , R 3 and R 4 are hydrogen, C 1 to C 10 alkyl or C 5 to C 10 aryl, or a carboxamide of the formula II in which R 5 is C 1 to C 12 alkyl which is unsubstituted or in which 1, 2 or 3 hydrogen atoms are replaced by a radical

公开(公告)号：DE59600384D1

公开(公告)日：1998-09-03

申请号：DE59600384

申请日：1996-02-01

Applicant: BASF AG

Inventor： BRUCHMANN BERND ,  WOLFF STEFAN ,  HEIDER WOLFGANG ,  JAEHME JOACHIM ,  LANGER WERNER ,  RENZ HANS

IPC: C08G18/02 ,  C07C265/14 ,  C07C273/18 ,  C07C275/62 ,  C08G18/30 ,  C08G18/78

Abstract: A process for the preparation of polyisocyanates which contain one or more biuret groups, by reacting a) an aliphatic or cycloaliphatic isocyanate containing two or more isocyanate groups (isocyanate a) with b) a tertiary alcohol or a mixture of water and a tertiary alcohol (biuretizing agent b) at from 100 to 250° C., which comprises carrying out the reaction in the presence c) of a stabilizer (c) which constitutes a catalytic amount of urea, ammonia, biuret, a urea derivative of the formula I in which R 1 , R 2 , R 3 and R 4 are hydrogen, C 1 to C 10 alkyl or C 5 to C 10 aryl, or a carboxamide of the formula II in which R 5 is C 1 to C 12 alkyl which is unsubstituted or in which 1, 2 or 3 hydrogen atoms are replaced by a radical

公开(公告)号：CA2268775A1

公开(公告)日：1998-05-07

申请号：CA2268775

申请日：1997-10-16

Applicant: BASF AG

Inventor： CLOUDSDALE IAN S ,  HOKAMA TAKEO ,  LANGER WERNER ,  SCHNEIDER HERMANN

IPC: C07D405/04 ,  C07D239/52

Abstract: A process for preparation of substituted phthalides, heterocyclic phthalides and derivatives thereof by reacting an aromatic carboxylic acid mono- or dianion with a reactive derivative of a pyrimidine carboxylic acid.

公开(公告)号：ZA9601170B

公开(公告)日：1997-08-14

申请号：ZA9601170

申请日：1996-02-14

Applicant: BASF AG

Inventor： BRUCHMANN BERND ,  WOLFF STEFAN ,  HEIDER WOLFGANG ,  JAEHME JOACHIM ,  LANGER WERNER ,  RENZ HANS

IPC: C08G18/02 ,  C07C265/14 ,  C07C273/18 ,  C07C275/62 ,  C08G18/30 ,  C08G18/78 ,  C07C ,  C08G

CPC classification number: C07C273/1863 ,  C07C265/14 ,  C07C273/1872 ,  C08G18/7831 ,  C07C275/62