公开(公告)号：AT299133T

公开(公告)日：2005-07-15

申请号：AT02000129

申请日：2002-01-04

Applicant: BASF AG

Inventor： PFEFFINGER JOACHIM ,  HUELLMANN MICHAEL DR ,  HOEHN ARTHUR DR ,  FUNKE FRANK DR ,  OHLBACH FRANK DR ,  GERLACH TILL DR

IPC: C07B61/00 ,  C07C209/48 ,  C07C211/11 ,  C07C211/14 ,  C07C213/02 ,  C07C215/08

Abstract: Mixtures of primary amines of the formula (I)and secondary amines of the formula (II)whereX is C1-20-alkyl, C2-20-alkenyl or C3-8-cycloalkyl which may be unsubstituted or substituted by C1-20-alkyl, C3-8-cycloalkyl, C4-20-alkylcycloalkyl, C4-20-cycloalkylalkyl, C2-20-alkoxyalkyl, C6-14-aryl, C7-20-alkylaryl, C7-20-aralkyl, C1-20-alkoxy, hydroxy, C1-20-hydroxyalkyl, amino, C1-20-alkylamino, C2-20-dialkylamino, C2-12-alkenylamino. C3-8-cycloalkylamino, arylamino, diarylamino, aryl-C1-8-alkylamino, halogen, mercapto, C2-20-alkenyloxy, C3-8-cycloalkoxy, aryloxy and/or C2-8-alkoxycarbonylare prepared by reacting nitriles of the formula (III)with hydrogen at from 50 to 250° C. and pressures of from 5 to 350 bar in the presence of a Pd-containing catalyst comprising, based on the total weight of the catalyst, from 0.1 to 10% by weight of Pd on a support.

公开(公告)号：DE50009707D1

公开(公告)日：2005-04-14

申请号：DE50009707

申请日：2000-07-21

Applicant: BASF AG

Inventor： PFEFFINGER JOACHIM ,  WAHL DR ,  NOUWEN DR ,  ELLER DR ,  HOEHN DR ,  HUNGER DR

IPC: B01J23/88 ,  B01J23/755 ,  C07B61/00 ,  C07C29/10 ,  C07C29/132 ,  C07C29/141 ,  C07C31/20

公开(公告)号：DE10238995A1

公开(公告)日：2004-02-26

申请号：DE10238995

申请日：2002-08-20

Applicant: BASF AG

Inventor： WOELFERT ANDREAS ,  MUELLER CHRISTIAN ,  STROEFER ECKHARD ,  WEBER MARKUS ,  PFEFFINGER JOACHIM ,  KNOESCHE CARSTEN

IPC: C07B43/10 ,  C07C263/10 ,  C07C265/12 ,  C07C265/14 ,  C08G73/00

Abstract: A method for the production of aromatic di-isocyanates (I) by gas-phase reaction of phosgene with diamines involves carrying out the reaction in a reaction zone under a pressure of more than 3 bar and less than 20 bar. An Independent claim is also included for a production unit for this process, in which the ratio of production capacity to phosgene hold-up is more than 3200 tonnes di-isocyanate per annum/kg phosgene.

公开(公告)号：AU2002360937A1

公开(公告)日：2003-06-10

申请号：AU2002360937

申请日：2002-11-19

Applicant: BASF AG

Inventor： STROFER ECKHARD ,  PFEFFINGER JOACHIM ,  WEBER MARKUS ,  KNOSCHE CARSTEN ,  WOLFERT ANDREAS ,  MULLER CHRISTIAN

IPC: C07C263/10 ,  B01J12/00 ,  C07C265/14

Abstract: The invention relates to a method for producing isocyanates by reacting primary amines with phosgene in the gaseous phase. Said method is characterized in that the reaction of amine and phosgene occurs in a reaction channel, the internal dimensions of which have a width/height ratio of at least 2/1.

公开(公告)号：DE19907648A1

公开(公告)日：2000-08-24

申请号：DE19907648

申请日：1999-02-23

Applicant: BASF AG

Inventor： DERNBACH MATTHIAS ,  DITTLINGER WOLFGANG ,  SCHOENFELDER HENDRIK ,  HENNINGSEN MICHAEL ,  PFEFFINGER JOACHIM

IPC: C07C263/04 ,  C07C265/14

公开(公告)号：DE19855959A1

公开(公告)日：2000-06-08

申请号：DE19855959

申请日：1998-12-04

Applicant: BASF AG

Inventor： PFEFFINGER JOACHIM ,  STROEFER ECKHARD

IPC: C08G18/02 ,  C07C263/04 ,  C07C265/04 ,  C07C263/18

Abstract: Preparation of isocyanate by thermal cleavage of the corresponding urethane in the steps: (a) preparation of urethane by reaction of the corresponding amine with urea and alcohol, (b) purification of the urethane by removal of the side products and impurities, (c) thermal cleavage of the urethane into isocyanate and alcohol, and (d) working up of the isocyanate is new. In purification of the urethane, components of the reaction mixture which are lower boiling than the urethane are distilled off, part of the urethane is removed from the reaction mixture by distillation under reduced pressure, the urethane is cleaved, the remaining sump fraction is heat treated in a rotary reactor, with cleavage of the urethane remaining in the sump fraction, and the isocyanate and alcohol cleavage products are drawn off as vapors.

公开(公告)号：DE19820114A1

公开(公告)日：1999-11-11

申请号：DE19820114

申请日：1998-05-06

Applicant: BASF AG

Inventor： PFEFFINGER JOACHIM ,  PFAB PETER ,  STROEFER ECKHARD

IPC: C07C263/04 ,  C07C263/20 ,  C07C265/14 ,  C08G18/72 ,  C07C265/04 ,  C07C265/10 ,  C07C269/04

Abstract: A process for the simultaneous production of (cyclo)aliphatic polyisocyanates comprises mixing the starting materials for isocyanate production via a phosgene free process to form the corresponding isocyanate and the resulting mixture is separated to form the pure isocyanate fraction.

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.