CH299599A - Process for the preparation of a chromable monoazo dye. - Google Patents

Process for the preparation of a chromable monoazo dye.

Info

Publication number
CH299599A
CH299599A CH299599DA CH299599A CH 299599 A CH299599 A CH 299599A CH 299599D A CH299599D A CH 299599DA CH 299599 A CH299599 A CH 299599A
Authority
CH
Switzerland
Prior art keywords
chromable
dye
parts
preparation
monoazo dye
Prior art date
Application number
Other languages
German (de)
Inventor
Ag J R Geigy
Original Assignee
Ag J R Geigy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ag J R Geigy filed Critical Ag J R Geigy
Publication of CH299599A publication Critical patent/CH299599A/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B45/00—Complex metal compounds of azo dyes
    • C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14—Monoazo compounds
    • C09B45/16—Monoazo compounds containing chromium
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B45/00—Complex metal compounds of azo dyes
    • C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14—Monoazo compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B62/00—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves
    • C09B62/44—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group not directly attached to a heterocyclic ring
    • C09B62/78—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group not directly attached to a heterocyclic ring with other reactive groups
    • C09B62/82—Azo dyes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

  Verfahren     zur        Herstellung        eines        ehromierbaren        MonoazofarbstofFes.       Gegenstand vorliegenden Patentes ist ein  Verfahren zur Herstellung eines     chromier-          baren        Monoazofarbstoffes.    Das Verfahren ist  dadurch gekennzeichnet, dass man     diazotiertes          2-Amino-phenol-4-n-propylsulfon    mit     1-Ace-          tylamino-7-naphthol    vereinigt.  



  Der Chromkomplex des erhaltenen neuen  Farbstoffes stellt ein blauschwarzes Pulver  dar, das Wolle aus neutralem oder schwach  saurem Bade in     grauen    Tönen von sehr guter  Wasch-,     Walk-,    Seewasser- und Lichtechtheit  färbt.    <I>Beispiel:

  </I>  21,5 Teile     2-Amino-phenol-4-n-propylsulfon     werden in 200 Teilen Wasser mit 17,5     Teilen          konz.    Salzsäure bei 0-5  mit einer Natrium  nitritlösung (entsprechend 6,9 Teilen     NaNOz          100%)        diazotiert.        Die        Diazoverbindung        wird     dann mit     Natriumbikarbonat    neutralisiert und  bei 0-5  in eine     Lösung    von 21,1 Teilen       1-Acetylamino-7-naphthol    in 200 Teilen Was  ser     und    4,

  2     Teilen        Nati@iumhydroxyd    und 15  Teilen Natriumkarbonat gegossen. Nachdem  die     Farbstoffbildung    beendet ist, wird kurz  auf 80  erwärmt, mit     Kochsalz    versetzt und  der Niederschlag     abfiltriert.     



  Der Chromkomplex des Farbstoffes kann  erhalten werden,     indem    man obigen Farbstoff    in noch feuchtem Zustand in 300 Teilen Was  ser mit -einer Lösung von     chromsalicylsaurem     Ammonium (entsprechend 4,2 Teilen     Cr203)     so lange zum Sieden erhitzt, bis die Komplex  bildung beendet ist. Nach dem Erkalten ist  der     chromhaltige        Farbstoff    weitgehend ausge  fallen. Er     wird        abfiltriert        und    getrocknet.

   Zur  Erzielung einer     einwandfreien    Löslichkeit       wird        40        %        des        Gewichtes        an        wasserfreier        Soda          und        10%        eines        Dispergiermittels        zugemischt.     Der     Farbstoff    stellt ein     blauschwarzes    Pulver  dar, das     Wolle    aus neutralem oder schwach  saurem Bade in grauen Tönen von sehr guter  Wasch-, Walk-,

   Seewasser- und Lichtechtheit  färbt.



  Process for the preparation of an honorable monoazo dye. The present patent relates to a process for the production of a chromable monoazo dye. The process is characterized in that diazotized 2-aminophenol-4-n-propylsulfone is combined with 1-acetylamino-7-naphthol.



  The chromium complex of the new dye obtained is a blue-black powder that dyes wool from a neutral or weakly acidic bath in gray shades of very good fastness to washing, fulling, seawater and light. <I> example:

  </I> 21.5 parts of 2-aminophenol-4-n-propylsulfone are concentrated in 200 parts of water with 17.5 parts. Hydrochloric acid diazotized at 0-5 with a sodium nitrite solution (corresponding to 6.9 parts of NaNOz 100%). The diazo compound is then neutralized with sodium bicarbonate and at 0-5 in a solution of 21.1 parts of 1-acetylamino-7-naphthol in 200 parts of water and 4,

  Poured 2 parts of sodium hydroxide and 15 parts of sodium carbonate. After the dye formation has ended, the mixture is briefly heated to 80, mixed with sodium chloride and the precipitate is filtered off.



  The chromium complex of the dye can be obtained by heating the above dye in 300 parts of water with a solution of chromium salicylic acid ammonium (corresponding to 4.2 parts of Cr203) while still moist until the complex formation is complete. After cooling, the chromium-containing dye has largely fallen out. It is filtered off and dried.

   To achieve perfect solubility, 40% by weight of anhydrous soda and 10% of a dispersant are added. The dye is a blue-black powder, the wool from neutral or weakly acidic bath in gray tones of very good washing, fulling,

   Color fastness to seawater and light.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines chromier- baren Monoazofarbstoffes, dadurch gekenn zeichnet, dass man diazotiertes 2-Amino-phe- nol-4-n-propylsiüfon mit 1-Acetylamino-7- naphthol vereinigt. . PATENT CLAIM: Process for the production of a chromable monoazo dye, characterized in that diazotized 2-amino-phenol-4-n-propylsulfone is combined with 1-acetylamino-7-naphthol. . Der Chromkomplex des erhaltenen neuen Farbstoffes stellt ein blauschwarzes Pulver dar, das Wolle aus neutralem oder schwach saurem Bade in grauen Tönen von sehr guter Wasch-, Walk-, _Seewasser- und Lichtechtheit färbt. The chromium complex of the new dye obtained is a blue-black powder that dyes wool from a neutral or weakly acidic bath in gray shades of very good fastness to washing, fulling, seawater and light.
CH299599D 1951-08-08 1951-08-08 Process for the preparation of a chromable monoazo dye. CH299599A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH299599T 1951-08-08
CH261126T 1952-07-16

Publications (1)

Publication Number Publication Date
CH299599A true CH299599A (en) 1954-06-15

Family

ID=25730398

Family Applications (1)

Application Number Title Priority Date Filing Date
CH299599D CH299599A (en) 1951-08-08 1951-08-08 Process for the preparation of a chromable monoazo dye.

Country Status (1)

Country Link
CH (1) CH299599A (en)

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