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公开(公告)号:ES2272706T3
公开(公告)日:2007-05-01
申请号:ES02726142
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: Procedimiento para la obtención de MDI, que comprende los siguientes pasos: A) reacción de anilina y formaldehído en presencia de un ácido para dar metilen(difenildiaminas) y polimetilen-polifenilen-poliaminas, siendo la proporción molar de ácido respecto a amina como máximo 0, 2, B) reacción de la mezcla obtenida en el paso A) con fosgeno para dar metilen- (difenildiisocianatos) y polimetilen-polifenilen-poliisocianatos, C) separación de la mezcla obtenida a partir del paso B) en MDI monómero y MDI polímero, ascendiéndose la cantidad separada de MDI monómero a un 10 hasta un 70 % en peso, referido a la cantidad de MDI crudo, y D) separación del MDI monómero obtenido en el paso C) bajo separación de 2, 4''-MDI, separándose un 10 a un 80 % en peso de 2, 4''-MDI, referido a la cantidad total de 2, 4''-MDI, que está contenido en el MDI monómero obtenido a partir del paso C).
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公开(公告)号:HU0303442A2
公开(公告)日:2004-01-28
申请号:HU0303442
申请日:2002-03-06
Applicant: BASF AG
Inventor: BETTENDORF CARL , BRUCHMANN BERND , PLAUMANN HEINZ , POHL SIEGMUND , REIF MARTIN , 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.
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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.
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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.
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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.
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公开(公告)号:HU229637B1
公开(公告)日:2014-03-28
申请号:HU0303442
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
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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
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公开(公告)号:DE50100255D1
公开(公告)日:2003-06-26
申请号:DE50100255
申请日:2001-06-08
Applicant: BASF AG
Inventor: MUELLER CHRISTIAN , SOHN DR , BETTENDORF CARL , VAN DEN ABEEL PETER , PENZEL DR , KRAUS DR , THIELE DR , STROEFER DR
IPC: C07C209/78 , C07C211/50
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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
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