CH101614A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH101614A
CH101614A CH101614DA CH101614A CH 101614 A CH101614 A CH 101614A CH 101614D A CH101614D A CH 101614DA CH 101614 A CH101614 A CH 101614A
Authority
CH
Switzerland
Prior art keywords
blue
azo dye
production
red
new azo
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH101614A publication Critical patent/CH101614A/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)

Description

  

  Verfahren zur Herstellung eines neuen     Azofarbstoffes.       Es -wurde gefunden,     idass    man einen neuen       Azofarbstoff    erhält, wenn man das     1-Oxy-          naphta,lin-8-sulia,mi,d    mit der     Diazoverbin-          dung    der     1-Amino-2-oxynaphtalin-4-sulfo-          säure    kuppelt.  



  <I>Beispiel:</I>       22,3    Teile     1-Oxynaphtalin-8-sulfa-mid,     kalt in einer überschüssigen, wässerigen     Ätz-          kalilösung    gelöst, werden mit<B>27,2</B> Teilen       Diazoverbindung    der     1-Amino-2-oxynapht-,it-          lin-4-suliosäure    als     Natronsalz    versetzt.

       Lt          ,die    sofort einsetzende Kupplung, welche  zweckmässig unter<B>10'</B> gehalten wird,<B>be-</B>  endet, so     wirddie    Masse mit verdünnter     Salz-          sä,ure    neutral gestellt, worauf der ausgeschie  dene neue     Azofarbstoff        abfiltriert    wird. Er  stellt ein dunkles Pulver dar, welches in  reinem Wasser mit rotvioletter, in konzen  trierter Schwefelsäure mit blauer, in ver  dünnter Natronlauge mit blauroter     Fa.Ae       löst. Er färbt aus saurem Bade die Wolle  rotviolett an, durch     Nacheliromieren    schlägt  ,der Farbton nach blau um.



  Process for the production of a new azo dye. It has been found that a new azo dye is obtained when 1-oxynaphta, lin-8-sulia, mi, d is coupled with the diazo compound of 1-amino-2-oxynaphthalene-4-sulfonic acid .



  <I> Example: </I> 22.3 parts of 1-oxynaphthalene-8-sulfa-mid, dissolved cold in an excess, aqueous caustic potash solution, are mixed with <B> 27.2 </B> parts of diazo compound of 1 -Amino-2-oxynapht-, it-lin-4-sulioic acid added as sodium salt.

       If the coupling, which starts immediately and which is expediently kept below <B> 10 ', <B> ends </B>, the mass is rendered neutral with dilute hydrochloric acid, whereupon the rejected new azo dye is filtered off. It is a dark powder which dissolves in pure water with red-violet, in concentrated sulfuric acid with blue, in dilute sodium hydroxide with blue-red Ae. He dyes the wool red-violet from an acidic bath; by re-eliomizing, the color changes to blue.

Claims (1)

PATENTANSPRUCH: Verfahren zur Ilers tellung eines neuen Azofarbstoffes, dadurch gekennzeichnet, -dass man das 1-Oxynaphtalin-8-sulfa-mid mit der Diazoverbindung der 1-Amino-2-oxynaphta'- 11-n-4-sulfosä,ure kuppelt. Der'neue Farbstoff stellt ein Üunkles Pulver eIar, welches sich in reinem Wasser mit rotvioletter, in konzen trierter Schwefelsäure mit blauer, in ver dünnter Natronlauge mit blauroter Farbe löst. PATENT CLAIM: Process for the production of a new azo dye, characterized in that 1-oxynaphthalene-8-sulfa-mid is coupled with the diazo compound of 1-amino-2-oxynaphta'-11-n-4-sulfoic acid. The new dye is a dark powder, which dissolves in pure water with red-violet, in concentrated sulfuric acid with blue, in dilute sodium hydroxide solution with blue-red color. Er färbt aus saurem Bade die Wolle rotviol,ett an, durch Nachchromieren schlägt .der Farbton nach blau um. He dyes the wool red-violet, or bold, from an acidic bath; after chrome-plating, the color changes to blue.
CH101614D 1922-11-18 1922-11-18 Process for the production of a new azo dye. CH101614A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH101614T 1922-11-18

Publications (1)

Publication Number Publication Date
CH101614A true CH101614A (en) 1923-12-17

Family

ID=4360037

Family Applications (1)

Application Number Title Priority Date Filing Date
CH101614D CH101614A (en) 1922-11-18 1922-11-18 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH101614A (en)

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