21.
    发明专利
    未知

    公开(公告)号:AT520649T

    公开(公告)日:2011-09-15

    申请号:AT06743390

    申请日:2006-05-02

    Applicant: BASF SE

    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.

    22.
    发明专利
    未知

    公开(公告)号:AT513802T

    公开(公告)日:2011-07-15

    申请号:AT08709244

    申请日:2008-02-28

    Applicant: BASF SE

    Abstract: The invention relates to a process for preparing an ethylene amine mixture, which comprises hydrogenating an amino nitrile mixture comprising at least 30% by weight of aminoacetonitrile (AAN) and at least 5% by weight of iminodiacetonitrile (IDAN) in the presence of a catalyst. Ethylenediamine (EDA) and/or diethylenetriamine (DETA) and, if appropriate, further ethylene amines can be isolated from the ethylene amine mixtures obtained.

    METODO PARA PRODUCIR AMINOPOLICARBOXILATOS A PARTIR DE AMINOACIDOS.

    公开(公告)号:MX2013011858A

    公开(公告)日:2013-11-01

    申请号:MX2013011858

    申请日:2012-03-13

    Applicant: BASF SE

    Abstract: La presente invención se refiere a un procedimiento para producir aminopolicarboxilatos a partir de un aminoácido que - en un primer paso procedimental, es hecho reaccionar con óxido de etileno para dar una mezcla intermedia que comprende la correspondiente dialcanolamina, y luego la mezcla intermedia, en un - segundo paso procedimental es transformada por vía catalítica haciendo uso de una base para dar el correspondiente aminopolicarboxilato, en el que - el aminoácido, antes de la reacción con óxido de etileno en el primer paso procedimental, es llevado a una neutralización parcial con 0,70 a 0,99 de equivalente de base por cada grupo ácido, o bien, en el primer paso procedimental, se usa un aminoácido que ya ha sido parcialmente neutralizado con 0,70 a 0,99 de equivalente de base por cada grupo ácido.

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