CH192051A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH192051A
CH192051A CH192051DA CH192051A CH 192051 A CH192051 A CH 192051A CH 192051D A CH192051D A CH 192051DA CH 192051 A CH192051 A CH 192051A
Authority
CH
Switzerland
Prior art keywords
azo dye
new azo
production
blue
diazo compound
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 CH192051A publication Critical patent/CH192051A/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
    • C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
    • C09B33/02—Disazo dyes
    • C09B33/08—Disazo dyes in which the coupling component is a hydroxy-amino compound
    • C09B33/10—Disazo dyes in which the coupling component is a hydroxy-amino compound in which the coupling component is an amino naphthol

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

  <B>Zusatzpatent</B> zum     Hauptpatent    Nr. 190424.    Verfahren zur Herstellung eines neuen     Azofarustoffes.       Es wurde gefunden, dass man einen neuen       Azofarbstoff    erhält,     wenn    man die     Diazover-          bindung    des     1-Aminobenzol-4-acetylamino-2-          methylsulfons        in.    saurem Medium mit     1-          Amino    - 8 -     oxynaphthalin    - 3,

  6 -     disulfonsäure          vereinigt        und    diesen so erhältlichen Farb  stoff in     alkalischem    Medium mit     Diazoben-          zol    umsetzt. Der neue     Azofarbstoff    bildet  ein     dunkles    Pulver, das sich in Wasser mit  blauer     Farbe    löst und Wolle aus saurem  Bade in     blauschwarzen    Tönen von guten       Echtheitseigenschaften    färbt.  



  <I>Beispiel:</I>  22,8 Teile     1-Aminobenzol-4-acetylamino-          2-methylsulfon    werden fein     pulverisiert,    mit  30 Teilen Salzsäure und 30 Teilen Wasser  gut     angeschwemmt    und bei<B>50'</B> in Lösung       gebracht.        Beim        Abkühlen    fällt das Chlor  hydrat der Base in     feiner    Form aus.

   Man  gibt 100     Teile        Eis    zu und innerhalb etwa  10 Minuten lässt man die berechnete -Menge       Natriumnitrit        zutropfen.    Nach     ca.        20    Minu  ten     ist    die     Diazotierung    fertig.

   Diese     Diazo-          lösung        giesst    man     nun    unter Rühren zu<B>31,9</B>  Teilen     feingefällter        1-Amino-8-oxynaphtha-          lin.-3,        6-disulf        onsäure        und        rührt        ca.    3 Stun-    den bei     ,gewöhnlicher    Temperatur.

   Dann  trägt man 35     Teile        Natriumcarbonat    ein und  vereinigt     soloalkalisch    mit einer     Diazolösung          aus    9,3     Teilen        Anilin,

      die auf     .bekannte     Weise     hergestellt        wird.    Der Farbstoff fällt  aus und     wird        abfiltriert.    Durch     Umlösen     und     Aussalzen        wird    er     gereinigt.    Nach dem  Trocknen erhält man     ein        dunkles        Pulver,    das  sich in Wasser mit blauer     Farbe    löst und  Wolle aus saurem Bade blauschwarz färbt.



  <B> Additional patent </B> to main patent no. 190424. Process for the production of a new azo-fragrant substance. It has been found that a new azo dye is obtained if the diazo compound of 1-aminobenzene-4-acetylamino-2-methylsulfone is mixed in an acidic medium with 1-amino-8-oxynaphthalene-3,

  6 - disulphonic acid combined and this dyestuff available in this way reacts with diazobenzene in an alkaline medium. The new azo dye forms a dark powder that dissolves in water with a blue color and dyes wool from an acid bath in blue-black shades with good fastness properties.



  <I> Example: </I> 22.8 parts of 1-aminobenzene-4-acetylamino-2-methylsulfone are finely pulverized, washed well with 30 parts of hydrochloric acid and 30 parts of water and at <B> 50 '</B> in Solution brought. On cooling, the chlorine hydrate of the base precipitates in fine form.

   100 parts of ice are added and the calculated amount of sodium nitrite is added dropwise within about 10 minutes. The diazotization is finished after approx. 20 minutes.

   This diazo solution is then poured into <B> 31.9 </B> parts of finely precipitated 1-amino-8-oxynaphthalene-3,6-disulphonic acid with stirring and stirred in for about 3 hours, more usual Temperature.

   Then you enter 35 parts of sodium carbonate and combined solo alkaline with a diazo solution of 9.3 parts of aniline,

      which is manufactured in a known manner. The dye precipitates and is filtered off. It is cleaned by dissolving and salting out. After drying, a dark powder is obtained which dissolves in water with a blue color and dyes wool from an acid bath blue-black.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Azofarbstoffes, dadurch gekennzeichnet, dafl man die Diazoverbinclung des 1-Aminoben- zol-4-acetylamino-2i-methyl@sulfons in saurem Medium mit 1-Amino-8-oxynaphthalin-3, PATENT CLAIM: Process for the production of a new azo dye, characterized in that the diazo compound of 1-aminobenzene-4-acetylamino-2i-methyl sulfone is carried out in an acidic medium with 1-amino-8-oxynaphthalene-3 6- disulfonsäure vereinigt und diesen so erhält lichen Farbstoff in alkalischem Medium mit der Diazoverbindung von Anilin umsetzt. Der neue Azofarbstoff bildet eindunkles Pulver, ,das sich in *Wasser mit blauer Farbe löst und Wolle aus saurem Bade in blau schwarzen Tönen von guten Echtheitseigen schaften färbt. - 6- disulfonic acid combined and this dyestuff thus obtainable is reacted in an alkaline medium with the diazo compound of aniline. The new azo dye forms a dark powder, which dissolves in water with a blue color and dyes wool from an acid bath in blue-black shades with good fastness properties. -
CH192051D 1936-01-30 1936-01-30 Process for the production of a new azo dye. CH192051A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH192051T 1936-01-30
CH190424T 1936-01-30

Publications (1)

Publication Number Publication Date
CH192051A true CH192051A (en) 1937-07-15

Family

ID=25721991

Family Applications (1)

Application Number Title Priority Date Filing Date
CH192051D CH192051A (en) 1936-01-30 1936-01-30 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH192051A (en)

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