METHOD FOR PRODUCING METHYLGLYCINE-N,N-DIETHANOIC ACID-TRIALKALI METAL SALTS WITH A LOW BY-PRODUCT CONTENT

    公开(公告)号:CA2607232A1

    公开(公告)日:2006-11-16

    申请号:CA2607232

    申请日:2006-05-02

    Applicant: BASF AG

    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.

    Method for producing methylglycine-N,N-diethanoic acid-trialkali metal salts with a low by-product content

    公开(公告)号:AU2006245816A1

    公开(公告)日:2006-11-16

    申请号:AU2006245816

    申请日:2006-05-02

    Applicant: BASF AG

    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 LOS ACIDOS CLOROCARBOXILICOS.

    公开(公告)号:ES2250371T3

    公开(公告)日:2006-04-16

    申请号:ES01919355

    申请日:2001-02-28

    Applicant: BASF AG

    Abstract: Procedimiento para la obtención de cloruros de los ácidos clorocarboxílicos de la fórmula (I) en la que R1 y R2 significan, independientemente entre sí, un átomo de hidrógeno, un resto alifático, aromático o aralifático insubstituido o substituido, con 1 hasta 20 átomos de carbono, un halógeno, un grupo nitro o un grupo ciano, e Y significa una cadena alquileno con 1 hasta 10 átomos de carbono en la cadena, que está insubstituida o que está substituida por restos alifáticos, aromáticos o aralifáticos, insubstituidos o substituidos, con 1 hasta 20 átomos de carbono, por halógeno, por grupos nitros y/o por grupos ciano, pudiendo estar interrumpida la cadena alquileno por un grupo éter, por un grupo tioéter, por un grupo amino terciario o por un grupo ceto, pudiendo estar enlazados entre sí los citados restos alifáticos, aromáticos o aralifáticos, insubstituidos o substituidos, con 1 hasta 20 átomos de carbono de Y y/o de R1 y/o de R2, formando un sistema no aromático, caracterizado porquese hace reaccionar una lactona de la fórmula (II) en la que R1, R2 e Y tienen el significado precedentemente indicado, con cloruro de hidrógeno y fosgeno en presencia de un catalizador, caracterizado porque se alimenta cloruro de hidrógeno antes y/o durante la adición de fosgeno, comenzándose con la introducción de cloruro de hidrógeno solamente a partir de una temperatura de 60ºC, como mínimo, y empleándose como catalizador un compuesto de piridina.

    55.
    发明专利
    未知

    公开(公告)号:DE50205702D1

    公开(公告)日:2006-04-13

    申请号:DE50205702

    申请日:2002-04-17

    Applicant: BASF AG

    Abstract: A method is provided for the intrinsically safe handling of 3-chloropropyne in the presence of a diluent with a boiling point ranging from -50° C. (223 K) to 200° C. (473 K) under atmospheric pressure, wherein the concentration of 3-chloropropyne in the liquid phase and in the gas phase is kept below the concentrations capable of deflagration by means of the type and amount of the diluent, the temperature and the total system pressure, together with the use of a 3-chloropropyne prepared, stored or transported in this way in the synthesis of dyestuffs, pharmaceutical and agricultural active ingredients, electroplating auxiliaries, disinfectants, steroids and growth hormones.

    Safe handling 3-chloropropine
    57.
    发明专利

    公开(公告)号:CZ20032891A3

    公开(公告)日:2004-04-14

    申请号:CZ20032891

    申请日:2002-04-17

    Applicant: BASF AG

    Abstract: A method is provided for the intrinsically safe handling of 3-chloropropyne in the presence of a diluent with a boiling point ranging from -50° C. (223 K) to 200° C. (473 K) under atmospheric pressure, wherein the concentration of 3-chloropropyne in the liquid phase and in the gas phase is kept below the concentrations capable of deflagration by means of the type and amount of the diluent, the temperature and the total system pressure, together with the use of a 3-chloropropyne prepared, stored or transported in this way in the synthesis of dyestuffs, pharmaceutical and agricultural active ingredients, electroplating auxiliaries, disinfectants, steroids and growth hormones.

    58.
    发明专利
    未知

    公开(公告)号:DE50005355D1

    公开(公告)日:2004-03-25

    申请号:DE50005355

    申请日:2000-11-27

    Applicant: BASF AG

    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.

    59.
    发明专利
    未知

    公开(公告)号:ES2201685T3

    公开(公告)日:2004-03-16

    申请号:ES99911747

    申请日:1999-03-08

    Applicant: BASF AG

    Abstract: The invention relates to a continuous method for producing propargyl chloride by reacting propargyl alcohol with a chlorinating agent in the presence of a catalyst. According to the invention, the chlorinating agent, propargyl alcohol and 0.1 to 10 mol.% of the catalyst with regard to the amount of propargyl alcohol is continuously dosed in a reaction zone and is reacted at a temperature ranging from 40 to 70 DEG C.

    60.
    发明专利
    未知

    公开(公告)号:AT259770T

    公开(公告)日:2004-03-15

    申请号:AT00987303

    申请日:2000-11-27

    Applicant: BASF AG

    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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