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    45.
    发明专利
    未知

    公开(公告)号：BRPI0611354A2

    公开(公告)日：2011-02-22

    申请号：BRPI0611354

    申请日：2006-05-31

    Applicant: BASF AG

    Inventor： SCHNEIDER JIRG ,  SCHERR GUENTER ,  EHRHARDT RAINER ,  EICHFELDER ANDREAS ,  REIF MARTIN ,  HIRSCH STEFAN ,  SIEDER GEORG ,  HOLTMANN THOMAS ,  CIPRIAN JUERGEN ,  ASCHERL HERMANN

    IPC: C07D251/70

    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.

    46.
    发明专利
    未知

    公开(公告)号：BRPI0611056A2

    公开(公告)日：2011-02-22

    申请号：BRPI0611056

    申请日：2006-06-02

    Applicant: BASF AG

    Inventor： SCHNEIDER J RG ,  SCHERR GUENTER ,  EHRHARDT RAINER ,  EICHFELDER ANDREAS ,  REIF MARTIN ,  HIRSCH STEFAN ,  SIEDER GEORG ,  HOLTMANN THOMAS ,  CIPRIAN JUERGEN ,  ASCHERL HERMANN

    IPC: C07D251/70

    Abstract: Processes comprising: providing an alkanolic reaction mixture, the alkanolic reaction mixture comprising: at least one alkoxycarbonylaminotriazine; at least one carbonic ester; at least one C1-C13-alkanol, which alkanol may further comprise up to two ether-bound oxygen atoms and may further comprise a substituent selected from the group consisting of C1-C4-alkyls and hydroxyls; and at least one alkali metal alkoxide or alkaline earth metal alkoxide; and subjecting the alkanolic reaction mixture to extraction with a polar extractant such that at least a portion of polar/ionic components present in the reaction mixture are removed, wherein the polar extractant is less than entirely miscible with an organic phase of the reaction mixture, to form an alkanolic phase comprising the at least one alkoxycarbonylaminotriazine and a polar phase comprising the polar extractant and the portion of polar/ionic components; and wherein the extraction is carried out with one or more selected from the group consisting of mixer/settler units, columns, centrifugal field separation extractors, and combinations thereof.

    PROCEDIMIENTO PARA LA OBTENCION DE MDI, EN ESPECIAL DE 2,4'-MDI.
    48.
    发明专利
    PROCEDIMIENTO PARA LA OBTENCION DE MDI, EN ESPECIAL DE 2,4'-MDI. 未知

    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).

    50.
    发明专利
    未知

    公开(公告)号：DE102005025899A1

    公开(公告)日：2006-12-07

    申请号：DE102005025899

    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

    Abstract: Processes comprising: providing an alkanolic reaction mixture, the alkanolic reaction mixture comprising: at least one alkoxycarbonylaminotriazine; at least one carbonic ester; at least one C1-C13-alkanol, which alkanol may further comprise up to two ether-bound oxygen atoms and may further comprise a substituent selected from the group consisting of C1-C4-alkyls and hydroxyls; and at least one alkali metal alkoxide or alkaline earth metal alkoxide; and subjecting the alkanolic reaction mixture to extraction with a polar extractant such that at least a portion of polar/ionic components present in the reaction mixture are removed, wherein the polar extractant is less than entirely miscible with an organic phase of the reaction mixture, to form an alkanolic phase comprising the at least one alkoxycarbonylaminotriazine and a polar phase comprising the polar extractant and the portion of polar/ionic components; and wherein the extraction is carried out with one or more selected from the group consisting of mixer/settler units, columns, centrifugal field separation extractors, and combinations thereof.

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