CH211845A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211845A
CH211845A CH211845DA CH211845A CH 211845 A CH211845 A CH 211845A CH 211845D A CH211845D A CH 211845DA CH 211845 A CH211845 A CH 211845A
Authority
CH
Switzerland
Prior art keywords
azo dye
blue
preparation
acid
sulfonic acid
Prior art date
Application number
Other languages
German (de)
Inventor
A-G J R Geigy
Original Assignee
Geigy Ag J R
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 Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH211845A publication Critical patent/CH211845A/en

Links

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Coloring (AREA)

Description

  

  Verfahren zur Herstellung eines     Azofarbstofes.       Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines     Azo-          farbstoffes,    dadurch gekennzeichnet, dass  man     4-Chlor-2-aminophenol-6-sulfonsäure          diazotiert    und mit     1-Oxynaphthalin-3-sul-          fonsäurediäthylamid-8-sulfonsäure    kuppelt.  



  Der neue Farbstoff, ein     dunkles        Pulver,     löst sich in Wasser blau und in     konz.    Schwe  felsäure blaurot und färbt Wolle     nachchro-          miert    in marineblauen Tönen von guter  Walk- und     Pottingechtheit.     



       Beispiel:     22,4 Teile     4-Chlor-2-aminophenol-6-sul-          fonsäure-werden    nach bekannter Methode     di-          azotiert;    die     Diazoniumlösung    wird mit einer       wässrigen    Lösung von 36 Teilen     1-Oxynaph-          thaIin    - 3     -sulfonsäure-"diäthylamid-        8-sulfon-          säure,    die 4 Teile Natronlauge 100 %     ig,    über  schüssiges Ammoniak und 100 Teile     Pyridin       enthält, gekuppelt.

   Nach beendeter Kombina  tion wird der Farbstoff durch     Salzsäurezu-          satz    gefällt, filtriert und getrocknet. Er  stellt ein dunkles Pulver dar, das sich in  Wasser blau, in     konz.    Schwefelsäure blaurot  löst und Wolle     nachchromiert    in marine  blauen Tönen färbt.



  Process for the preparation of an azo dye. The present patent relates to a process for the preparation of an azo dye, characterized in that 4-chloro-2-aminophenol-6-sulfonic acid is diazotized and coupled with 1-oxynaphthalene-3-sulfonic acid diethylamide-8-sulfonic acid.



  The new dye, a dark powder, dissolves in water blue and in conc. Sulfur acid blue-red and dyes wool after-chromating in navy blue tones with good mill and potting fastness.



       Example: 22.4 parts of 4-chloro-2-aminophenol-6-sulphonic acid are azotized by a known method; the diazonium solution is coupled with an aqueous solution of 36 parts of 1-oxynaphthalene-3-sulfonic acid "diethylamide-8-sulfonic acid, which contains 4 parts of 100% sodium hydroxide solution, excess ammonia and 100 parts of pyridine.

   When the combination is complete, the dye is precipitated by adding hydrochloric acid, filtered and dried. It is a dark powder that turns blue in water, and in conc. Sulfuric acid dissolves bluish-red and, after chroming, dyes wool in navy blue tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azo- farbstoffes, dadurch gekennzeichnet, dass man 4-Chlor-2-aminophenol-6-sulfonsäure di- azotiert und mit 1-Oxynaphthalin-3-sulf on- säurediäthylamid-8-sulfonsäure kuppelt. Claim: Process for the production of an azo dye, characterized in that 4-chloro-2-aminophenol-6-sulfonic acid is azotized and coupled with 1-oxynaphthalene-3-sulfon acid diethylamide-8-sulfonic acid. Der neue Farbstoff, ein dunkles Pulver, löst sich in Wasser blau und in konz. Schwe felsäure blaurot und färbt Wolle nachchro- miert in marineblauen Tönen von guter Walk- und Pottingechtheit. The new dye, a dark powder, dissolves in water blue and in conc. Sulfur acid blue-red and dyes wool after-chromating in navy blue tones with good mill and potting fastness.
CH211845D 1938-12-02 1938-12-02 Process for the preparation of an azo dye. CH211845A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH210343T 1938-12-02
CH211845T 1938-12-02

Publications (1)

Publication Number Publication Date
CH211845A true CH211845A (en) 1940-10-15

Family

ID=25724851

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211845D CH211845A (en) 1938-12-02 1938-12-02 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211845A (en)

Similar Documents

Publication Publication Date Title
CH242504A (en) Process for the preparation of a copper-compatible polyazo dye.
CH211845A (en) Process for the preparation of an azo dye.
CH211844A (en) Process for the preparation of an azo dye.
CH211847A (en) Process for the preparation of an azo dye.
CH211842A (en) Process for the preparation of an azo dye.
CH270832A (en) Process for the preparation of a trisazo dye.
CH192985A (en) Process for the production of a new azo dye.
CH213001A (en) Process for the preparation of an azo dye.
CH251583A (en) Process for the preparation of an azo dye.
CH211846A (en) Process for the preparation of an azo dye.
CH222699A (en) Process for the preparation of a monoazo dye.
CH192984A (en) Process for the production of a new azo dye.
CH200370A (en) Process for the preparation of a chromable o-oxydisazo dye.
CH205807A (en) Process for the preparation of a monoazo dye.
CH194359A (en) Process for the preparation of an azo dye.
CH232035A (en) Process for the preparation of a trisazo dye.
CH205800A (en) Process for the preparation of a monoazo dye.
CH189036A (en) Process for the preparation of a water-soluble monoazo dye.
CH205804A (en) Process for the preparation of a monoazo dye.
CH179677A (en) Process for the preparation of a monoazo dye.
CH210995A (en) Process for the preparation of a disazo dye.
CH292294A (en) Process for the preparation of a copper-containing disazo dye.
CH187332A (en) Process for the preparation of an o-oxyazo dye.
CH305335A (en) Process for the production of a copper-containing trisazo dye.
CH222696A (en) Process for the preparation of a monoazo dye.