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143 records (took 0.024 seconds)

    31.
    发明专利
    未知

    公开(公告)号：DE102005021055A1

    公开(公告)日：2006-11-09

    申请号：DE102005021055

    申请日：2005-05-06

    Applicant: BASF AG

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

    IPC: C07C227/26 ,  C07C227/20 ,  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.

    32.
    发明专利
    未知

    公开(公告)号：DE50007400D1

    公开(公告)日：2004-09-16

    申请号：DE50007400

    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 ,  C07C51/60 ,  C07C51/64 ,  C07C53/42 ,  C07C57/66

    Abstract: The invention relates to a method for producing acid chlorides by converting carboxylic acids with carbon oxychlorides or thionyl chloride in the presence of a catalyst adduct of an N,N-disubstituted formamide of general formula (I) and carbon oxychloride or thionyl chloride. In the formula, R and R , independently from one another, mean C1- to C4-alkyl or R and R together mean a C4- or C5-alkylene chain. According to the inventive method, hydrogen chloride is added during and/or after the conversion.

    33.
    发明专利
    未知

    公开(公告)号：ES2209544T3

    公开(公告)日：2004-06-16

    申请号：ES99964476

    申请日：1999-06-14

    Applicant: BASF AG

    Inventor： STAMM ARMIN ,  HENKELMANN JOCHEM

    IPC: C07D233/56 ,  C07D233/60 ,  C07D233/95 ,  C07D521/00

    Abstract: In a process for preparing carbonyldiimidazole from imidazole and phosgene in an inert solvent, the imidazole hydrochloride which results as coupled product is removed as melt from the resulting reaction mixture by phase separation.

    34.
    发明专利
    未知

    公开(公告)号：DE50006006D1

    公开(公告)日：2004-05-13

    申请号：DE50006006

    申请日：2000-08-23

    Applicant: BASF AG

    Inventor： STAMM ARMIN ,  KNEUPER HEINZ-JOSEF ,  THIL LUCIEN ,  HENKELMANN JOCHEM

    IPC: C07C263/10 ,  C07C265/08 ,  C07C265/10 ,  C07C265/12

    Abstract: The present invention relates to a process for the preparation of aliphatic, cycloaliphatic, araliphatic and aromatic mono- and oligoisocyanates by phosgenation of the corresponding primary amines at atmospheric pressure, which comprisesa) introducing a catalytic amount of a monoisocyanate (isocyanate a) into an inert solvent together with phosgene;b) adding the primary amine, andc) reacting the resulting reaction mixture with phosgene.

    35.
    发明专利
    未知

    公开(公告)号：AT263752T

    公开(公告)日：2004-04-15

    申请号：AT00951530

    申请日：2000-08-23

    Applicant: BASF AG

    Inventor： STAMM ARMIN ,  KNEUPER HEINZ-JOSEF ,  THIL LUCIEN ,  HENKELMANN JOCHEM

    IPC: C07C263/10 ,  C07C265/08 ,  C07C265/10 ,  C07C265/12

    Abstract: The present invention relates to a process for the preparation of aliphatic, cycloaliphatic, araliphatic and aromatic mono- and oligoisocyanates by phosgenation of the corresponding primary amines at atmospheric pressure, which comprisesa) introducing a catalytic amount of a monoisocyanate (isocyanate a) into an inert solvent together with phosgene;b) adding the primary amine, andc) reacting the resulting reaction mixture with phosgene.

    36.
    发明专利
    未知

    公开(公告)号：ES2200576T3

    公开(公告)日：2004-03-01

    申请号：ES99959265

    申请日：1999-10-29

    Applicant: BASF AG

    Inventor： STAMM ARMIN ,  HENKELMANN JOCHEM

    IPC: C07C51/60 ,  C07C53/42 ,  C07C53/50

    Abstract: The invention relates to a process for the preparation of acid chlorides by reaction of carboxylic acids, carboxylic anhydrides, cyclic carboxylic esters or sulfonic acids with phosgene in the presence of a catalytic amount of a compound from the group consisting of N,N,N',N'-tetrasubstituted amidinium halides (I), N,N,N'-trisubstituted amidinium hydrohalides (II) and N,N,N'-trisubstituted amidines (III).

    38.
    发明专利
    未知

    公开(公告)号：DE10152117A1

    公开(公告)日：2003-04-30

    申请号：DE10152117

    申请日：2001-10-23

    Applicant: BASF AG

    Inventor： ROHDE THORSTEN ,  STAMM ARMIN ,  HENKELMANN JOCHEM

    IPC: C07B61/00 ,  C07C263/10 ,  C07C265/10 ,  B01J31/02 ,  C07F9/53

    Abstract: The invention relates to a method for producing isocyanates by reacting the corresponding primary amines with phosgene in an inert solvent. According to said method, between 0.01 and 50 mol. % of a phosphine oxide is used, in relation to the total amount of primary amine and isocyanate formed in the reaction solution.

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