CH266278A - Process for the preparation of an o, o'-dioxyazo dye. - Google Patents

Process for the preparation of an o, o'-dioxyazo dye.

Info

Publication number
CH266278A
CH266278A CH266278DA CH266278A CH 266278 A CH266278 A CH 266278A CH 266278D A CH266278D A CH 266278DA CH 266278 A CH266278 A CH 266278A
Authority
CH
Switzerland
Prior art keywords
dye
dioxyazo
preparation
propyloxyamino
diazotized
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 CH266278A publication Critical patent/CH266278A/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)

Description

  

  <B>Verfahren</B>     zur   <B>Herstellung eines</B>     o,o'-Dioxyazofarbstoffes.       Gegenstand vorliegenden Patentes ist ein  Verfahren zur Herstellung eines     o,o'-Dioxy-          azofarbstoffes.    Das Verfahren ist dadurch ge  kennzeichnet, dass man     diazotierte        4-Chlor-2-          amino-phenol-6-sulfonsäure    in     alkalischem    Me  dium mit     1-Carbo-propyloxyamino-7-napht-hol     kuppelt.  



  Der so erhaltene neue Farbstoff     ist    ein     vio-          lettschwarzes    Pulver, das sich in Wasser mit.  marineblauer, in konzentrierter Schwefelsäure  mit     fuchsinroter    Farbe löst. Er färbt. nach  dem     Einbadehromierverfahren    auf Wolle       blaustichig    graue Töne von hervorragender       Lichtechtheit.     



       Beispiel:     44,7 Teile     4-Chlor-2-amino-phenol-6-sulfon-          säure    werden wie üblich     diazotiert    und die       Diazoverbindung    in eine Lösung von 49     Tei-          IPn        1-Carbo-propyloxyamino-7-naphthol    in 500    Teile Wasser, 22 Teile Natronlauge 40     %        ig     und 30 Teile     calc.    Soda einlaufen gelassen.  Der gebildete Farbstoff fällt als dunkles Pul  ver aus     und    wird     abfiltriert.  



  <B> Process </B> for <B> producing </B> an o, o'-dioxyazo dye. The subject of the present patent is a process for the production of an o, o'-dioxy azo dye. The process is characterized in that diazotized 4-chloro-2-aminophenol-6-sulfonic acid is coupled with 1-carbo-propyloxyamino-7-naphthol in an alkaline medium.



  The new dye obtained in this way is a violet-black powder that dissolves in water with. marine blue, dissolves in concentrated sulfuric acid with a fuchsin red color. He colors. blue-tinged gray tones of excellent lightfastness after the incorporation process on wool.



       Example: 44.7 parts of 4-chloro-2-aminophenol-6-sulfonic acid are diazotized as usual and the diazo compound is dissolved in a solution of 49 parts of 1-carbo-propyloxyamino-7-naphthol in 500 parts of water, 22 parts of 40% sodium hydroxide solution and 30 parts of calc. Soda poured in. The dye formed precipitates out as a dark powder and is filtered off.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines o,o'-Di- oxyazofarbstoffes, dadurch gekennzeichnet, dass man diazotierte 4-Chlor-2-amino-phenol- 6-sulfonsäure in alkalischem Medium mit 1- Carbo-propyloxyamino-7-naphtholkuppelt. Der so erhaltene neue Farbstoff ist ein vio- lettschwarzes Pulver, das sieh in Wasser mit marineblauer, in konzentrierter Schwefelsäure mit fuchsinroter Farbe löst. Claim: Process for the production of an o, o'-dioxyazo dye, characterized in that diazotized 4-chloro-2-aminophenol-6-sulfonic acid is coupled with 1-carbo-propyloxyamino-7-naphthol in an alkaline medium. The new dye obtained in this way is a violet-black powder that dissolves in water with a navy blue color and in concentrated sulfuric acid with a fuchsine red color. Er färbt nach dem Einbadchromierverfahren auf Wolle blaustichig graue Töne von hervorragender Lichtechtheit. Using the one-bath chrome plating process, it dyes blue-tinged gray shades of excellent lightfastness on wool.
CH266278D 1944-02-21 1944-02-21 Process for the preparation of an o, o'-dioxyazo dye. CH266278A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH241414T 1944-02-21
CH266278T 1944-02-21

Publications (1)

Publication Number Publication Date
CH266278A true CH266278A (en) 1950-01-15

Family

ID=25728590

Family Applications (1)

Application Number Title Priority Date Filing Date
CH266278D CH266278A (en) 1944-02-21 1944-02-21 Process for the preparation of an o, o'-dioxyazo dye.

Country Status (1)

Country Link
CH (1) CH266278A (en)

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