CH233091A - Process for the preparation of a chromable monoazo dye. - Google Patents

Process for the preparation of a chromable monoazo dye.

Info

Publication number
CH233091A
CH233091A CH233091DA CH233091A CH 233091 A CH233091 A CH 233091A CH 233091D A CH233091D A CH 233091DA CH 233091 A CH233091 A CH 233091A
Authority
CH
Switzerland
Prior art keywords
chromable
preparation
dye
monoazo dye
orange
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 CH233091A publication Critical patent/CH233091A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B45/00Complex metal compounds of azo dyes
    • C09B45/02Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14Monoazo compounds
    • C09B45/16Monoazo compounds containing chromium

Landscapes

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

Description

  

  Verfahren zur Darstellung eines     ehromierbaren        3Zonoazofarbstoffes.       Es wurde gefunden, dass man wertvolle       chromierbare        Monoazofarbstoffe    erhält, wenn  man     diazotierte        2-Aminophenol-6-sulfonsäu-          ren,    die in     4-Stellung    einen     Cycloalkylrest     oder einen     Alkylrest    von 3 .bis und mit 8       Kohlenstoffatomen    enthalten,

   mit     Pyrazolo-          nen    ohne freie     Sulfon-    und     Carbonsäuregrup-          pen    kuppelt.  



  Gegenstand vorliegenden Zusatzpatentes  ist ein Verfahren zur Herstellung eines     chro-          mierbaren        Monoazofarbstoffes,    dadurch ge  kennzeichnet, dass man     diazotierte        2-Amino-          4-cyclohexylphenol-6-sulfonsäure    mit     1-Phe-          nyl-3-methyl-5-pyrazolon    kuppelt.  



  Der neue Farbstoff stellt ein braunrotes  Pulver dar, dessen Lösung in Wasser orange,  in Schwefelsäure gelborange gefärbt ist. Er  färbt Wolle -beim Behandeln mit Chromsal  zen in     gelbstichig    roten Tönen.         Beispiel:       27,1 Teile     2-Amino-4-cyclohexylphenol-6-          sulfonsäure    (aus     4-Cyclohexylphenol    durch       Sulfonierung,        NTitrierung    und Reduktion dar  gestellt) werden in üblicher Weise indirekt       diazotiert.    Die     Diazoniumverbindung    kuppelt    man mit 17,

  9 Teilen     1-Phenyl-3-methyl-5-          pyrazolon        in_        sodaalkalischer    Lösung: Nach  Beendigung der     Farbstoffbildung    wird der  Farbstoff     ausgesalzen,        abfiltriert    und ge  trocknet. Er wird als braunrotes Pulver er  halten, das sich in Wasser mit oranger, in  konzentrierter Schwefelsäure mit     gelboranger     Farbe löst.

   Aus saurem Bade zieht er auf  Wolle beim     Nachchromieren    in     gelbstichig     roten Tönen mit guten Nass-     und        Lichtecht-          heiten.    Färbungen mit den gleichen Eigen  schaften werden auch direkt nach dem     Ein-          badchromierverfahren    erhalten.



  Process for the preparation of an honorable 3-zone azo dye. It has been found that valuable chromable monoazo dyes are obtained if diazotized 2-aminophenol-6-sulfonic acids which contain a cycloalkyl radical or an alkyl radical of 3 to and including 8 carbon atoms in the 4-position,

   couples with pyrazolones without free sulfonic and carboxylic acid groups.



  The subject of the present additional patent is a process for the production of a chromable monoazo dye, characterized in that diazotized 2-amino-4-cyclohexylphenol-6-sulfonic acid is coupled with 1-phenyl-3-methyl-5-pyrazolone.



  The new dye is a brown-red powder, the solution of which is orange in water and yellow-orange in sulfuric acid. It dyes wool in yellowish red tones when treated with chromium salts. Example: 27.1 parts of 2-amino-4-cyclohexylphenol-6-sulfonic acid (made from 4-cyclohexylphenol by sulfonation, Titration and reduction is) are diazotized indirectly in the usual manner. The diazonium compound is coupled with 17,

  9 parts of 1-phenyl-3-methyl-5-pyrazolone in soda-alkaline solution: After the dye has formed, the dye is salted out, filtered off and dried. It is obtained as a brownish-red powder that dissolves in water with an orange color and in concentrated sulfuric acid with a yellow-orange color.

   From an acidic bath, it pulls on wool when it is re-chromed in yellowish red tones with good wet and light fastness properties. Colorations with the same properties are also obtained directly after the single chrome plating process.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines chro- mierbaren Monoazofarbstoffes, dadurch ge kennzeichnet, dass man diazotierte 2-Amino- 4-cyclohexylphenol-6-sulfonsäure mit 1-Phe- nyl-3-methyl-5-pyrazolon kuppelt. Der neue Farbstoff stellt ein braunrotes Pulver dar, dessen Lösung in Wasser orange, in Schwefelsäure gelborange gefärbt ist. Er färbt Wolle beim Behandeln mit Chromsal zen in gelbstichig roten Tönen. PATENT CLAIM: Process for the preparation of a chromable monoazo dye, characterized in that diazotized 2-amino-4-cyclohexylphenol-6-sulfonic acid is coupled with 1-phenyl-3-methyl-5-pyrazolone. The new dye is a brown-red powder, the solution of which is orange in water and yellow-orange in sulfuric acid. It dyes wool in yellowish red shades when treated with chromium salts.
CH233091D 1942-05-16 1942-05-16 Process for the preparation of a chromable monoazo dye. CH233091A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH233091T 1942-05-16
CH230906T 1942-05-16

Publications (1)

Publication Number Publication Date
CH233091A true CH233091A (en) 1944-06-30

Family

ID=25727516

Family Applications (1)

Application Number Title Priority Date Filing Date
CH233091D CH233091A (en) 1942-05-16 1942-05-16 Process for the preparation of a chromable monoazo dye.

Country Status (1)

Country Link
CH (1) CH233091A (en)

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