CH104913A - Process for the preparation of a new azo dye. - Google Patents

Process for the preparation of a new azo dye.

Info

Publication number
CH104913A
CH104913A CH104913DA CH104913A CH 104913 A CH104913 A CH 104913A CH 104913D A CH104913D A CH 104913DA CH 104913 A CH104913 A CH 104913A
Authority
CH
Switzerland
Prior art keywords
blue
preparation
azo dye
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 CH104913A publication Critical patent/CH104913A/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)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur     lierstellung    eines neuen     Azofarbstoffs.       Es wurde gefunden,     dass    man einen neuen       Azofarbstoff    erhält, wenn man das     1-Oxynaph-          thalin-8-sulfamid    mit der chlorierten     Diazo-          verbindung    der     1-Amino-2-oxynaphthalin-4-          sulfosäure    kuppelt.  



  <I>Beispiel:</I>  <B>22,3</B> Teile     1-Oxyriaphthalin-8-sulfamid,    halt  in einer überschüssigen, wässerigen     Aetzkali-          lösung    gelöst, werden mit<B>30,6</B> Teilen     ehlorier-          ter        Diazoverbindung    der     1-Amirio-2-oxyiiaph-          thalin-4-sulfosätire    versetzt. Ist die sofort ein  setzende Kupplung, welche zweckmässig unter  <B>10 0</B> gehalten wird, beendet, so wird die  Masse     mitverdünnterSalzsäureneutral    gestellt,  worauf der ausgeschiedene neue     Azofarbstoff          abfiltriert    wird.

   Er stellt ein dunkles Pulver  dar, welches sich in reinem Wasser mit rot  violetter, in konzentrierter Schwefelsäure mit  blauer, in verdünnter Natronlauge mit blau-    roter Farbe löst. Er färbt aus saurein Bade  die Wolle rotviolett an, durch     Nachchromieren          schlä-t    der Farbton nach blau um.  



       ZD  



  Process for the preparation of a new azo dye. It has been found that a new azo dye is obtained when 1-oxynaphthalene-8-sulfamide is coupled with the chlorinated diazo compound of 1-amino-2-oxynaphthalene-4-sulfonic acid.



  <I> Example: </I> <B> 22.3 </B> parts of 1-oxyriaphthalene-8-sulfamide, dissolved in an excess, aqueous caustic potash solution, are mixed with <B> 30.6 </ B > Part of the chlorinated diazo compound of the 1-Amirio-2-oxyiiaphthalin-4-sulfosätire added. When the coupling, which sets in immediately and which is expediently kept below 10 0, has ended, the mixture is rendered neutral with diluted hydrochloric acid, whereupon the new azo dye which has separated out is filtered off.

   It is a dark powder that dissolves in pure water with red-violet color, in concentrated sulfuric acid with blue, in dilute sodium hydroxide solution with blue-red color. He dyes the wool red-violet from acidic baths, and after chrome plating the color changes to blue.



       ZD

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Herstellung eines neuen Azofarbstoffs, dadurch gekennzeichnet, dass man das 1-Oxyiiaphthalin-8-stilfamid mitder chlorierten Diazoverbindung der 1-Ainino-2- oxyiiaphthi-tlin-4-sullosäurekuippelt. Der neue Farbstoff stellt ein dunkles Pulver dar, wel- clies sieh in reinem Wasser mit rotvioletter, in konzentrierter Schwefelsäure mit blauer, in verdünnter Natronlauge mit blauroter Farbe löst. Claim: Process for the preparation of a new azo dye, characterized in that 1-oxyiiaphthalene-8-stilfamide is mixed with the chlorinated diazo compound of 1-ainino-2-oxyiiaphthi-tlin-4-sulloic acid. The new dye is a dark powder that dissolves in pure water with red-violet, in concentrated sulfuric acid with blue, in dilute caustic soda with blue-red color. Er färbt ans saurem Bade die Wolle rotviolett an, durch Nachchromieren schlägt der Farbton nach blau um. He dyes the wool red-violet in the acidic bath; after chrome plating, the color changes to blue.
CH104913D 1922-11-18 1922-11-18 Process for the preparation of a new azo dye. CH104913A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH101614T 1922-11-18
CH104913T 1922-11-18

Publications (1)

Publication Number Publication Date
CH104913A true CH104913A (en) 1924-05-16

Family

ID=25706012

Family Applications (1)

Application Number Title Priority Date Filing Date
CH104913D CH104913A (en) 1922-11-18 1922-11-18 Process for the preparation of a new azo dye.

Country Status (1)

Country Link
CH (1) CH104913A (en)

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