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    Disperse water-insoluble benzeneazo-3-acetyl-or 3-propionyl-aminodiphenyl-amine dyestuffs
    4.
    发明授权
    Disperse water-insoluble benzeneazo-3-acetyl-or 3-propionyl-aminodiphenyl-amine dyestuffs 失效
    分散水不溶性苯甲腈-3-乙酰基或3-丙酸 - 氨基二苯胺试剂

    公开(公告)号：US3640996A

    公开(公告)日：1972-02-08

    申请号：US3640996D

    申请日：1969-02-17

    Applicant: BASF AG

    Inventor： STURM HANS-JUERGEN ,  MAYER KURT

    IPC: C09B29/08 ,  C09B49/00 ,  D06P1/08 ,  D06P3/52

    CPC classification number: C09B29/08

    Abstract: DISPERSE WATER-INSOLUBLE AZO DYES IN WHICH A DIAZO COMPONENT, E.G. OF THE BENEZENE SERIES, IS COUPLED TO 3ACETYLAMINO OR 3-PROPIONYLAMINO-DIPHENYLAMINE AS THE COUPLING COMPONENT; THESE DYES WHEREIN THE NITROGEN ATOM OF THE DIPHENYLAMINE IS SUBSTITUTED BY METHYL, ETHYL, B-HYDROXY-ETHYL OR -PROPYL, B-HYDROXY-$-PROPYL, OR BACETOXY-ETHYL OR -PROPYL, WHEN USED ALONE OR IN MIXTURES WITH THE CORRESPONDING COMPOUNDS HAVING THE UNSUBSTITUTED NITROGEN ATOM ARE ESPECIALLY USEFUL FOR THE DISPERSION DYEING OF SYNTHETIC LINAR POLYESTER FIBROUS MATERIALS.

    CONTINUOUS PRODUCTION OF ANTHRANILIC ACID
    9.
    发明专利
    CONTINUOUS PRODUCTION OF ANTHRANILIC ACID 未知

    公开(公告)号：CA995238A

    公开(公告)日：1976-08-17

    申请号：CA94956

    申请日：1970-10-06

    Applicant: BASF AG

    Inventor： STURM HANS-JUERGEN ,  KEMPTER FRITZ E ,  ARMBRUST HERBERT

    IPC: C07C67/00 ,  C07C227/00 ,  C07C227/04 ,  C07C227/22 ,  C07C229/56 ,  C07D265/26

    Abstract: 1316332 Production of anthranilic acid and isatoic anhydride BADISCHE ANILIN- & SODA-FABRIK AG 5 Oct 1970 [6 Oct 1969 8 Jan 1970] 47200/70 Heading C2C Anthranilic acid and/or isatoic anhydride alkali metal salts are continuously produced by reacting alkali metal salts of phthalamic acid and/or phthalimide with a hypohalite in an aqueous medium, wherein the first reaction stage, i.e. the reaction of the starting material to form the alkali metal salt of phenyl isocyanate- 2-carboxylic acid, is effected under substantially adiabatic conditions while substantially avoiding the occurrence of back mixing and the reaction mixture formed is immediately withdrawn from the reaction zone of the first stage and supplied substantially without back mixing to the reaction zone of the following stage, i.e. the reaction to form the end product. The first stage of the reaction is suitably carried out at 10-50‹ C. and the second stage at 60-80‹ C. under atmospheric or elevated pressure, and a reducing agent, e.g. a 10-40% by wt. sodium bisulphite solution, may be added to the reaction mixture after it has left the reaction zone of the first stage and before the reaction has been completed. The alkali metal salts produced may be acidified to give the free anthranilic acid or isatoic anhydride. The starting materials may be aqueous solutions of 10-50 wt. per cent of phthalimide and/or phthalamide which contain from 1 to 1À1 mole of alkali metal hydroxide per mole of phthalimide/phthalamide, and the aqueous hypohalite solutions suitably contain 8-15% by wt. of hypohalite and 0À02 to 2À1 moles of alkali metal hydroxide per mole of phthalimic/phthalamic acid.

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