CH299601A - Process for the preparation of a chromable monoazo dye. - Google Patents

Process for the preparation of a chromable monoazo dye.

Info

Publication number
CH299601A
CH299601A CH299601DA CH299601A CH 299601 A CH299601 A CH 299601A CH 299601D A CH299601D A CH 299601DA CH 299601 A CH299601 A CH 299601A
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 CH299601A publication Critical patent/CH299601A/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

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

Description

  

  Verfahren     zur    Herstellung eines     ehromierbaren        Monoazofarbstoffes.            CTegenstand    vorliegenden Patentes ist ein  Verfahren zur Herstellung eines     chromier-          baren        Monoazofarbstoffes.    Das Verfahren ist  dadurch gekennzeichnet, dass man     diazotiertes          2-Amino-phenol-4-äthylsulfon    mit     1-Carbo-          methoxj7amino-7-naphthol    vereinigt.  



  Der Chromkomplex des erhaltenen neuen  Farbstoffes stellt ein blauschwarzes Pulver  dar, das Wolle aus neutralem Bade in grauen  Tönen von sehr guten     Nassechtheiten    und sehr  guter     Liehteehtheit    färbt.  



       Beispiel:     20,1 Teile     2-Aminophenol-4-äthylsulfon     werden in 150 Teilen Wasser und 17,5 Teilen       konz.        >Salzsäure        verrührt    und bei 0-5  mit  einer     Natriumnitritlösung    (entsprechend 6,9       Teilen        Natriumnitrit        100%)

          diazotiert.        Die          Ansehlämmung    der     Diazov        erbindung    wird mit  N     atriumbikarbonat    neutralisiert und bei 0 bis       5^    in eine Lösung von 24,3 Teilen     1-Carbo-          methoxyamino-7-naphthol    in 200 Teilen Was  ser und 4,2 Teilen     Natriumhydroxyd    und 15  Teilen Natriumkarbonat gegossen.

   Nachdem  die     Farbstoffbildung    beendet ist, wird kurz  auf 80  erwärmt und der Farbstoff nach Zu  gabe von     Natriumehlorid        abfiltriert.       Der Chromkomplex des Farbstoffes kann  erhalten werden, indem man obigen Farbstoff  in 1000 Teilen Wasser mit einer Lösung aus       clrromsalicylsaurem    Ammonium (entsprechend  4,2 Teilen     Cr2O3)    so lange zum Sieden er  hitzt, bis die Komplexbildung beendet ist, was  nach ungefähr einer Stunde der Fall ist. Man  isoliert den Farbstoff nach Zugabe von Na  triumchlorid durch     Abfiltrieren.     



  Nach dem Trocknen stellt er ein blau  schwarzes Pulver dar, das Wolle aus neutra  lem Bade in grauen Tönen von sehr guten       Nasseehtheiten    und sehr     guter    Lichtechtheit  färbt. Zur Erzielung einwandfreier Wasser  löslichkeit wird mit Natriumkarbonat ver  mischt.



  Process for the preparation of an honorable monoazo dye. The subject matter of the present patent is a process for the production of a chromable monoazo dye. The process is characterized in that diazotized 2-aminophenol-4-ethylsulfone is combined with 1-carbomethoxj7amino-7-naphthol.



  The chromium complex of the new dye obtained is a blue-black powder which dyes wool from a neutral bath in gray tones with very good wet fastness properties and very good light fastness.



       Example: 20.1 parts of 2-aminophenol-4-ethylsulfone are concentrated in 150 parts of water and 17.5 parts. > Stir hydrochloric acid and at 0-5 with a sodium nitrite solution (corresponding to 6.9 parts sodium nitrite 100%)

          diazotized. The Ansehlämmung the Diazov connection is neutralized with sodium bicarbonate and poured at 0 to 5 ^ in a solution of 24.3 parts of 1-carbomethoxyamino-7-naphthol in 200 parts of water and 4.2 parts of sodium hydroxide and 15 parts of sodium carbonate.

   After the dye formation has ended, the mixture is briefly heated to 80 and the dye is filtered off after sodium chloride has been added. The chromium complex of the dye can be obtained by boiling the above dye in 1000 parts of water with a solution of chromosalicylic acid ammonium (corresponding to 4.2 parts of Cr2O3) until the complex formation has ended, which is the case after about an hour is. After adding sodium chloride, the dye is isolated by filtering off.



  After drying, it is a blue-black powder that dyes wool from neutral bath in gray tones with very good wetness properties and very good lightfastness. To achieve perfect water solubility, it is mixed with sodium carbonate.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines chromier- baren Honoazofarbstoffes, dadurch gekenn zeichnet., dass man diazotiertes 2-Amino-phe- nol-4-äthyIsulfon mit 1.-Carbomet.hoxyamino-7- naphthol vereinigt. Der Chromkomplex des erhaltenen neuen Farbstoffes stellt ein blauschwarzes Pulver dar, das Wolle aus neutralem Bade in grauen Tönen von sehr guten Nassechtheiten und sehr guter Lichtechtheit färbt. PATENT CLAIM: Process for the production of a chromable honoazo dye, characterized in that diazotized 2-amino-phenol-4-ethyisulphone is combined with 1.-carbomet.hoxyamino-7-naphthol. The chromium complex of the new dye obtained is a blue-black powder which dyes wool from a neutral bath in gray shades of very good wet fastness and very good light fastness.
CH299601D 1951-08-08 1951-08-08 Process for the preparation of a chromable monoazo dye. CH299601A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH299601T 1951-08-08
CH261126T 1952-07-16

Publications (1)

Publication Number Publication Date
CH299601A true CH299601A (en) 1954-06-15

Family

ID=25730400

Family Applications (1)

Application Number Title Priority Date Filing Date
CH299601D CH299601A (en) 1951-08-08 1951-08-08 Process for the preparation of a chromable monoazo dye.

Country Status (1)

Country Link
CH (1) CH299601A (en)

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