PROCEDIMIENTO PARA OBTENCION DE ACIDO N-FOSFONO-METILIMINODIACETICO.

    公开(公告)号:ES2225764T3

    公开(公告)日:2005-03-16

    申请号:ES02708274

    申请日:2002-01-11

    Applicant: BASF AG

    Abstract: Procedimiento para la obtención de ácido N- fosfonometiliminodiacético mediante reacción de una sal metálica alcalina de ácido iminodiacético con tricloruro de fósforo en disolución acuosa, bajo formación de cloruro de ácido iminodiácetico, ácido fosforoso y del correspondiente cloruro metálico alcalino, subsiguiente reacción con una fuente de formaldehído, y en caso deseado obtención de ácido N-fosfonometildiaminodiacético a partir de la mezcla de reacción, caracterizado porque, durante la reacción de la sal metálica alcalina de ácido iminodiacético con tricloruro de fósforo, se elimina agua, que contiene, en caso dado, HCl, de la mezcla de reacción, hasta que se presenta una concentración en hidrocloruro de ácido iminodiacético en el intervalo de un 44 a un 55 % en peso, referido al peso de la mezcla de reacción menos el peso de cloruro metálico alcalino.

    62.
    发明专利
    未知

    公开(公告)号:DE50200809D1

    公开(公告)日:2004-09-16

    申请号:DE50200809

    申请日:2002-01-11

    Applicant: BASF AG

    Abstract: The present invention relates to a process for the preparation of N-phosphonomethyliminodiacetic acid by reacting an alkali metal salt of iminodiacetic acid with phosphorus trichloride in aqueous solution with formation of the hydrochloride of iminodiacetic acid, phosphorous acid and of the corresponding alkali metal chloride, followed by reaction with a formaldehyde source and, if desired, recovery of the N-phosphonomethyliminodiacetic acid from the reaction mixture, in which water, which may comprise HCl, is removed from the reaction mixture during and/or after reacting the alkali metal salt of iminodiacetic acid with phosphorus trichloride until the concentration of iminodiacetic acid hydrochloride is at least 40% by weight, based on the weight of the reaction mixture minus the weight of alkali metal chloride. The process makes possible the preparation of N-phosphonomethyliminodiacetic acid in a simple fashion and in high yield.

    Solubility of cellulose in imidazolium derived ionic liquids with the addition of amino bases

    公开(公告)号:NZ562169A

    公开(公告)日:2011-01-28

    申请号:NZ56216906

    申请日:2006-04-12

    Applicant: BASF AG

    Abstract: Disclosed is a solution comprising cellulose, an ionic liquid as a solvent and 6 - 30% by weight of a nitrogen-comprising base, based on the total weight of the solution, wherein the ionic liquid comprises at least one cation of formula (IVe), wherein; R is unbranched and unsubstituted alkyl; R1 is unbranched or branched alkyl which is unsubstituted; and the radicals R2 to R4 are each, independently of one another, hydrogen, or unbranched or branched alkyl which is unsubstituted; and wherein the nitrogen-comprising base is an imidazole compound which is derived from the quaternary compounds of the formula (IVe), with the radical R forming the quaternary compounds not being present and R1-R4 independently of one another, are as defined above.

    70.
    发明专利
    未知

    公开(公告)号:BRPI0609083A2

    公开(公告)日:2010-11-16

    申请号:BRPI0609083

    申请日:2006-04-07

    Applicant: BASF AG

    Abstract: Solution comprises cellulose and an ionic liquid containing anions and cations as solvent, where the cation exhibits at least one atom of nitrogen, oxygen, sulfur and phosphorus, which is present in protonated form. An independent claim is included for the preparation of the solution.

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