CH213001A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH213001A
CH213001A CH213001DA CH213001A CH 213001 A CH213001 A CH 213001A CH 213001D A CH213001D A CH 213001DA CH 213001 A CH213001 A CH 213001A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
dye
acid
blue
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 CH213001A publication Critical patent/CH213001A/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)
  • Coloring (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung eines     Azofarbstoffes.       Gegenstand des vorliegenden     Patentes    ist  ein Verfahren zur     Herstellung        eine,,        Azo-          farbstoffes,    dadurch gekennzeichnet,     daB     man     5-Nitro-2-am#inophenol        diazotiert    und  mit     1-Ogynaph@thalin-    3     -phenylsulfon-    8     -sul-          fonsäure    kuppelt.  



  Der neue     Farbstoff,    ein dunkles     bronzie-          rendes    Pulver, löst     sich    in Wasser bleu, in  konzentrierter Schwefelsäure rot und färbt  Wolle     naehchromiert    in     grünstichig    blauen  Tönen von guter Walk- und     Pottingechtheit.            Beispiel:

       . 15,4 Teile     5-Nitro-2-aminophenol    werden  mit 7 Teilen     Natriumnitrit    nach     bekannter     Methode     diazotiert.    Die     Diazoniumlösung     vereinigt man mit einer     wässrigen    Lösung  von 36,4 Teilen     1-OgynaphthaIin-3-phenyl-          sulfon-8-sulfonsäure,    4 Teilen     Natronlauge     100%ig, 12 Teilen Soda und 100 Teilen Py-         ridin.    Die Kupplung ist in kurzer     Zeit    been  det.

   Der neue Farbstoff, ein dunkles     bronzie-          rendes    Pulver, löst sich 'in Wasser blau, in       konzentrierter    Schwefelsäure rot und färbt  Wolle     nachchromiert    in reinen     grünstichig     blauen Tönen von guter Walk- und     Potting-          echtheit.  



  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 5-nitro-2-aminophenol is diazotized and coupled with 1-ogynaph®thalin-3-phenylsulfonic-8-sulfonic acid.



  The new dye, a dark bronzing powder, dissolves in blue water and red in concentrated sulfuric acid and dyes wool after chrome-plated in greenish blue tones of good mill and potting fastness. Example:

       . 15.4 parts of 5-nitro-2-aminophenol are diazotized with 7 parts of sodium nitrite by a known method. The diazonium solution is combined with an aqueous solution of 36.4 parts of 1-ogynaphthalene-3-phenylsulfone-8-sulfonic acid, 4 parts of 100% sodium hydroxide solution, 12 parts of soda and 100 parts of pyridine. The clutch is finished in a short time.

   The new dye, a dark bronzing powder, dissolves blue in water and red in concentrated sulfuric acid and dyes wool after chrome-plated in pure greenish blue tones with good mill and potting fastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, ,dadurch gekennzeichnet, dass man 5-Nitro-2-aminophenol diazotiert und mit 1- Ogynaphthalin - 3 - phenylsulf an - 8 - sulf an - säure kuppelt. PATENT CLAIM: Process for the production of an azo dye, characterized in that 5-nitro-2-aminophenol is diazotized and coupled with 1-ogynaphthalene - 3 - phenylsulf to - 8 - sulf to - acid. Der neue Farbstoff, ein dunkles bronzie- rendes Pulver, löst sich in Wasser blau, in konzentrierter S@.ehwvefelsäure rot -,und färbt, Wolle naehehromiet in grünstichig blauen Tönen von guter Walk- und Pottingechtheit. The new dye, a dark bronzing powder, dissolves blue in water and red in concentrated sulphurous acid, and dyes wool in greenish blue shades of good mill and potting fastness.
CH213001D 1938-12-02 1938-12-02 Process for the preparation of an azo dye. CH213001A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH210343T 1938-12-02
CH213001T 1938-12-02

Publications (1)

Publication Number Publication Date
CH213001A true CH213001A (en) 1940-12-31

Family

ID=25724854

Family Applications (1)

Application Number Title Priority Date Filing Date
CH213001D CH213001A (en) 1938-12-02 1938-12-02 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH213001A (en)

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