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    72.
    发明专利
    未知

    公开(公告)号：AT366725T

    公开(公告)日：2007-08-15

    申请号：AT04740458

    申请日：2004-06-30

    Applicant: BASF AG

    Inventor： MAASE MATTHIAS ,  MASSONNE KLEMENS

    IPC: C07D233/54 ,  C07D521/00

    Abstract: Process for preparing purified 1,3-substituted imidazolium salts of the formula (I) by reacting a 1,3-substituted imidazolium salt of the formula (II), with a strong base at from 20 to 250° C. while distilling off the 1,3-substituted imidazol-2-ylidene formed, in which the 1,3-substituted imidazol-2-ylidene which has been distilled off is brought into contact in the gaseous state with the protic acid HaA (III) and/or the 1,3-substituted imidazol-2-ylidene which has been distilled off is passed in the gaseous or condensed state into a receiver comprising the protic acid HaA (III).

    SOLVENT SYSTEM BASED ON MOLTEN IONIC LIQUIDS, ITS PRODUCTION AND USE FOR PRODUCING REGENERATED CARBOHYDRATES
    73.
    发明专利
    SOLVENT SYSTEM BASED ON MOLTEN IONIC LIQUIDS, ITS PRODUCTION AND USE FOR PRODUCING REGENERATED CARBOHYDRATES 未知

    公开(公告)号：CA2633623A1

    公开(公告)日：2007-07-12

    申请号：CA2633623

    申请日：2006-12-22

    Applicant: BASF AG

    Inventor： MASSONNE KLEMENS ,  MAASE MATTHIAS ,  HERMANUTZ FRANK ,  STEGMANN VEIT ,  GAEHR FRANK ,  LUTZ MICHAEL ,  UERDINGEN ERIC

    IPC: C08J3/09 ,  C08B1/00 ,  D01F2/02

    Abstract: A solution system for biopolymers in the form of carbohydrates based on a molten ionic liquid, additives optionally being contained in the solution system, is described. This solution system contains a protic solvent or a mixture of several protic solvents, and in the case where the protic solvent is solely water, this is present in the solution system in an amount of more than about 5 wt. %. Carbohydrates can be incorporated into the solution system, in particular in the form of starch, cellulose and derivatives thereof, and it can then be used for regeneration of the carbohydrates contained therein. A particularly advantageous process for the preparation of the solution system containing the carbohydrates and for the preparation of regenerated carbohydrates, in particular in the form of regenerated cellulose fibers, is moreover described. The invention accordingly also provides such spun fibers as are distinguished in that they are non-fibrillating. The invention offers in particular economic advantages over the systems of the prior art.

    74.
    发明专利
    未知

    公开(公告)号：DE102005017733A1

    公开(公告)日：2006-10-19

    申请号：DE102005017733

    申请日：2005-04-15

    Applicant: BASF AG

    Inventor： MAASE MATTHIAS ,  STEGMANN VEIT

    IPC: C08L1/02

    Abstract: The present invention relates to a solution comprising cellulose, an ionic liquid comprising anions and cations as solvent and 6-30% by weight of a nitrogen-comprising base, based on the total weight of the solution, its preparation and also its use for the physical or chemical treatment of cellulose.

    METHOD FOR PRODUCING N-PHOSPHONOMETHYL IMINODIACETIC ACID
    76.
    发明专利
    METHOD FOR PRODUCING N-PHOSPHONOMETHYL IMINODIACETIC ACID 未知

    公开(公告)号：SI1353930T1

    公开(公告)日：2005-02-28

    申请号：SI200230026

    申请日：2002-01-11

    Applicant: BASF AG

    Inventor： MAASE MATTHIAS ,  DROEGEMUELLER MICHAEL

    IPC: C07F9/38

    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.

    77.
    发明专利
    未知

    公开(公告)号：DK1353930T3

    公开(公告)日：2004-12-06

    申请号：DK02708274

    申请日：2002-01-11

    Applicant: BASF AG

    Inventor： DROEGEMUELLER MICHAEL ,  MAASE MATTHIAS

    IPC: C07F9/38

    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.

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