公开(公告)号：DE19804916A1

公开(公告)日：1999-08-12

申请号：DE19804916

申请日：1998-02-07

Applicant: BASF AG

Inventor： STROEFER ECKHARD DR ,  CAESAR FRIEDRICH DR ,  PENZEL ULRICH DR ,  SCHARR VOLKER ,  GMEREK KARL-HEINZ ,  HASSE HANS DR

IPC: C07C209/78 ,  C07C211/50

公开(公告)号：ES2199909T3

公开(公告)日：2004-03-01

申请号：ES01114057

申请日：2001-06-08

Applicant: BASF AG

Inventor： MULLER CHRISTIAN ,  SOHN MARTIN DR ,  BETTENDORF CARL ,  VAN DEN ABEEL PETER ,  PENZEL ULRICH DR ,  KRAUS RUPERT DR

IPC: C07C209/78 ,  C07C211/50

公开(公告)号：AT240935T

公开(公告)日：2003-06-15

申请号：AT01114057

申请日：2001-06-08

Applicant: BASF AG

Inventor： MUELLER CHRISTIAN ,  SOHN MARTIN DR ,  BETTENDORF CARL ,  VAN DEN ABEEL PETER ,  PENZEL ULRICH DR ,  KRAUS RUPERT DR ,  THIELE KAI DR ,  STROEFER ECKHARD DR

IPC: C07C209/78 ,  C07C211/50

公开(公告)号：ES2219832T3

公开(公告)日：2004-12-01

申请号：ES98124266

申请日：1998-12-18

Applicant: BASF AG

Inventor： STROFER ECKHARD DR ,  CAESAR FRIEDRICH DR ,  PENZEL ULRICH DR ,  SCHORR VOLKER ,  GMEREK KARL-HEINT ,  HASSE HANS DR

IPC: C07C209/78 ,  C07C211/50

Abstract: LA INVENCION TRATA DE PROCEDIMIENTOS PARA LA OBTENCION DE METILENDI(FENILAMINA) MEDIANTE LA REACCION DE ANILINA CON FORMALDEHIDO EN PRESENCIA DE CATALIZADORES ACIDOS, CARACTERIZADO PORQUE SE UTILIZA UNA MEZCLA (A), QUE CONTIENE (B) POLI(OXIMETILEN)GLICOLES Y OPCIONALMENTE (C) FORMALDEHIDO MONOMERICO Y/O METILENGLICOL, SIENDO LA RELACION MOLAR DE (B) : (C) MAYOR QUE 1 : 0,6.

公开(公告)号：DE19804915A1

公开(公告)日：1999-08-12

申请号：DE19804915

申请日：1998-02-07

Applicant: BASF AG

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

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

Abstract: The invention relates to a method for the production of methylenedi(phenylamine) by reacting aniline with formaldehyde in the presence of acid catalysts. The method is characterized in that aniline and optionally an acid catalyst are treated in a semi-continuos method; formaldehyde and optionally an acid catalyst are fed through a mixing organ in a circuit in which aniline, optionally an acid catalyst and optionally an already added formaldehyde are circulated and tempering the reaction mixture at a temperature of over 75 DEG C after feeding at least 50 % of the total amount of formaldehyde. The invention also relates to a method for the production of polyisocyanates by phosgenating the amines thus obtained and the polyisocyanates obtained according to this method.