-
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：DE10111337A1
公开(公告)日：2002-09-12
申请号：DE10111337
申请日：2001-03-08
Applicant: BASF AG
Inventor： REIF MARTIN , BRUCHMANN BERND , POHL SIEGMUND , BETTENDORF CARL , PLAUMANN HEINZ , THIELE KAI
IPC: C07C263/10 , C07B61/00 , C07C263/20 , C07C265/14 , C08G18/76
Abstract: The invention relates to a method for producing MD1, comprising the following steps: A) aniline and formaldehyde are made to react in the presence of an acid to form methylene(diphenyldiamene) and polymethylene polyphenylene polyamine, the mol ratio of acid to amine being a maximum of 0.2; b) the mixture obtained in step A) is reacted with phosgene to form methylene (diphenyldiisocyanate) and polymethylene polyphenylene polyisocyanate; C) the mixture obtained in step B) is separated into monomer MDI and polymer MDI; and D) the monomer MDI obtained in step C) is separated from 2,4'- MDI.
-
公开(公告)号：CA2229835A1
公开(公告)日：1998-09-19
申请号：CA2229835
申请日：1998-03-18
Applicant: BASF AG
Inventor： KRAUS RUPERT , TESCH HELMUT , BRUCHMANN BERND , REIF MARTIN
IPC: C07C263/10 , C07C265/14 , C08G18/76 , C07C265/00
Abstract: In a process for preparing isocyanates having a light color by reacting the corresponding amines with phosgene, the amines are treated with solid inorganic substances containing Lewis acid and/or Brönsted acid centers prior to the reaction with the phosgene.
-
公开(公告)号：DE102005036584A1
公开(公告)日：2007-02-15
申请号：DE102005036584
申请日：2005-08-01
Applicant: BASF AG
Inventor： ERHARDT RAINER , EICHFELDER ANDREAS , RUEBA EVA , SCHERR GUENTER , REIF MARTIN
-
公开(公告)号：DE102005025855A1
公开(公告)日：2006-12-14
申请号：DE102005025855
申请日：2005-06-06
Applicant: BASF AG
Inventor： SCHNEIDER JOERG , SCHERR GUENTER , ERHARDT RAINER , EICHFELDER ANDREAS , REIF MARTIN , HIRSCH STEFAN , SIEDER GEORG , HOLTMANN THOMAS , CIPRIAN JUERGEN , ASCHERL HERMANN
IPC: C07D251/18 , A61K31/53
Abstract: The invention relates to a process for preparing free-flowing, pulverulent alkoxycarbonylaminotriazine from an alkanolic reaction mixture which is obtained in the preparation of alkoxycarbonylaminotriazines and comprises at least one alkoxycarbonylaminotriazine, at least one cyclic and/or acyclic carbonic ester, at least one C1-C13-alkanol which optionally comprises one or two oxygen atoms in the form of ether bonds and is optionally substituted by C1-C4-alkyl and/or hydroxyl, and also at least one alkali metal or alkaline earth metal alkoxide, with or without melamine and with or without catalyst, by atomizing and drying the reaction mixture in a spray drier.
-
Patent Agency Ranking
公开(公告)号：DE102005025901A1
公开(公告)日：2006-12-07
申请号：DE102005025901
申请日：2005-06-06
Applicant: BASF AG
Inventor： SCHNEIDER JOERG , SCHERR GUENTER , ERHARDT RAINER , EICHFELDER ANDREAS , REIF MARTIN , HIRSCH STEFAN , SIEDER GEORG , HOLTMANN THOMAS , CIPRIAN JUERGEN , ASCHERL HERMANN
IPC: C07D251/40
-
公开(公告)号：DE50208205D1
公开(公告)日：2006-11-02
申请号：DE50208205
申请日：2002-03-06
Applicant: BASF AG
Inventor： REIF MARTIN , BRUCHMANN BERND , POHL SIEGMUND , BETTENDORF CARL , PLAUMANN HEINZ , THIELE KAI
IPC: C07C263/10 , C08G18/76 , C07B61/00 , C07C263/20 , C07C265/14
Abstract: MDI is prepared by a process comprising the following steps: A) reaction of aniline and formaldehyde in the presence of an acid to give methylene(diphenyldiamines) and polymethylenepolyphenylenepolyamines, the molar ratio of acid to amine being not more than 0.2, B) reaction of the mixture obtained in step A) with phosgene to give methylene(diphenyl diisocyanates) and polymethylenepolyphenylene polyisocyanates, C) separation of the mixture obtained in step B) into monomeric MDI and polymeric MDI and D) separation of the monomeric MDI obtained in step C) by isolating 2,4'-MDI.
-
公开(公告)号：AT340204T
公开(公告)日：2006-10-15
申请号：AT02726142
申请日：2002-03-06
Applicant: BASF AG
Inventor： REIF MARTIN , BRUCHMANN BERND , POHL SIEGMUND , BETTENDORF CARL , PLAUMANN HEINZ , THIELE KAI
IPC: C07C263/10 , C07B61/00 , C07C263/20 , C07C265/14 , C08G18/76
Abstract: MDI is prepared by a process comprising the following steps: A) reaction of aniline and formaldehyde in the presence of an acid to give methylene(diphenyldiamines) and polymethylenepolyphenylenepolyamines, the molar ratio of acid to amine being not more than 0.2, B) reaction of the mixture obtained in step A) with phosgene to give methylene(diphenyl diisocyanates) and polymethylenepolyphenylene polyisocyanates, C) separation of the mixture obtained in step B) into monomeric MDI and polymeric MDI and D) separation of the monomeric MDI obtained in step C) by isolating 2,4'-MDI.
-
公开(公告)号：BR0317303A
公开(公告)日：2005-11-08
申请号：BR0317303
申请日：2003-12-16
Applicant: BASF AG
Inventor： SCHNEIDER JOERG , SCHERR GUENTER , SCHUPP HANS , EICHFELDER ANDREAS , ROBERT ALAIN , REIF MARTIN
IPC: C07D251/54 , C07D251/70
Abstract: In a process for preparing alkoxycarbonylaminotriazines, di- or triaminotriazines are reacted with cyclic carbonic esters and optionally with minor amounts of acyclic carbonic esters in the presence of an alcohol and of an alkali metal alkoxide or alkaline earth metal alkoxide as a base.
-
公开(公告)号：HU222987B1
公开(公告)日：2004-01-28
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.
-
-
-
-
-
-
-
-
-
Search Results
56
records
(took 0.05 seconds)
