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    82.
    发明专利
    未知

    公开(公告)号：BRPI0611122A2

    公开(公告)日：2010-11-09

    申请号：BRPI0611122

    申请日：2006-05-02

    Applicant: BASF AG

    Inventor： OFTRING ALFRED ,  BRAUN GEROLD ,  WIRSING FRIEDRICH ,  STAMM ARMIN ,  BALDENIUS KAI-UWE

    IPC: C07C227/26 ,  C07C229/16

    Abstract: The invention relates to a process for preparing low-by-product, light-color methylglycine-N,N-diacetic acid tri(alkali metal) salt by alkaline hydrolysis of methylglycinediacetonitrile (MGDN), comprising the steps in the sequence (a) to (f): (a) mixing of MGDN with aqueous alkali at a temperature of ≦̸30° C.; (b) allowing the aqueous alkaline MGDN suspension to react at a temperature in the range from 10 to 30° C. over a period of from 0.1 to 10 h to form a solution; (c) allowing the solution from step (b) to react at a temperature in the range from 30 to 40° C. over a period of from 0.1 to 10 h; (d) optionally allowing the solution from step (c) to react at a temperature in the range from 50 to 80° C. over a period of from 0.5 to 2 h; (e) optionally allowing the solution from step (c) or (d) to react at a temperature in the range from 110 to 200° C. over a period of from 5 to 60 min; (f) hydrolysis and removal of ammonia of the solution obtained in step (c), (d) or (e) by stripping at a temperature of from 90 to 105° C.

    PROCEDIMIENTO PARA LA OBTENCION DE CLORUROS DE ACIDO CARBOXILICO.
    87.
    发明专利
    PROCEDIMIENTO PARA LA OBTENCION DE CLORUROS DE ACIDO CARBOXILICO. 未知

    公开(公告)号：ES2223578T3

    公开(公告)日：2005-03-01

    申请号：ES00960571

    申请日：2000-08-31

    Applicant: BASF AG

    Inventor： BUSCH RALPH ,  KNEUPER HEINZ-JOSEF ,  WEBER THEODOR ,  MULLER WINFRIED ,  STAMM ARMIN ,  HENKELMANN JOCHEM

    IPC: C07B61/00 ,  C07C51/60 ,  C07C51/64 ,  C07C53/42 ,  C07C57/66

    Abstract: Procedimiento para la obtención de cloruros de ácido carboxílico mediante reacción de ácidos carboxílicos con fosgeno en presencia de un aducto catalizador a partir de una formamida N, N-disubstituida de la fórmula general (I) en la que R1 y R2, independientemente entre sí, significan alquilo con 1 a 4 átomos de carbono, o R1 y R2 significan conjuntamente una cadena de alquileno con 4 o 5 átomos de carbono, y fosgeno, a 0 hasta 100 ºC y 0, 5 a 2, 0 bar de presión absoluta, de una cantidad molar de formamida N, N-disubstituida (I) de 0, 05 a 2, 0, referido a la cantidad molar de ácido carboxílico empleado, y una cantidad molar de fosgeno de 1, 0 a 2, 0, referido a la cantidad molar de ácido carboxílico, caracterizado porque se alimenta cloruro de hidrógeno gaseoso durante y/o tras la reacción.

    88.
    发明专利
    未知

    公开(公告)号：AT288411T

    公开(公告)日：2005-02-15

    申请号：AT00972657

    申请日：2000-08-31

    Applicant: BASF AG

    Inventor： BUSCH RALPH ,  KNEUPER HEINZ-JOSEF ,  WEBER THEODOR ,  MUELLER WINFRIED ,  STAMM ARMIN ,  HENKELMANN JOCHEM

    IPC: C07B61/00 ,  C07C51/00 ,  C07C51/64 ,  C07C53/42 ,  C07C57/66

    Abstract: Process for the purification of carbonyl chlorides which have been prepared by reacting carboxylic acids with phosgene or thionyl chloride in the presence of a catalyst adduct, in which the carbonyl chlorides are treated with a hydrohalide of carboxamides of the formula (I)in which R is hydrogen or C1- to C3-alkyl; R and R independently of one another are C1- to C4-alkyl, or R and R together are a C4- or C5-alkylene chain, and the carbonyl chloride purified in this way is isolated by separation off from the carboxamide hydrohalide phase.

    89.
    发明专利
    未知

    公开(公告)号：ES2215780T3

    公开(公告)日：2004-10-16

    申请号：ES00987303

    申请日：2000-11-27

    Applicant: BASF AG

    Inventor： GITZ ROLAND ,  GITZ NORBERT ,  KEIL MICHAEL ,  WOLF BERND ,  STEINMETZ ADRIAN ,  STAMM ARMIN

    IPC: C07C51/00 ,  C07C51/60

    Abstract: A process for preparing o-chloromethylbenzoyl chlorides of the formula I,in which R to R can be identical or different and are hydrogen, C1-C4-alkyl, halogen or trifluoromethyl, by reacting benzo-fused lactones of the formula II,in which R to R are as defined above, with thionyl chloride, which comprises carrying out the reaction in the presence of catalytic amounts of boric acid, boric anhydride, borate, boronic acid or boronic acid esters and catalytic amounts of a quaternary ammonium salt is described.

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