CH192045A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH192045A
CH192045A CH192045DA CH192045A CH 192045 A CH192045 A CH 192045A CH 192045D A CH192045D A CH 192045DA CH 192045 A CH192045 A CH 192045A
Authority
CH
Switzerland
Prior art keywords
azo dye
new azo
production
diazo compound
dye
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 CH192045A publication Critical patent/CH192045A/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

  

      Zusatzpatent    zum     Hauptpatent    Nr. 190424.    Verfahren zur Herstellung eines neuen     Azofarbstoffes.       Es wurde gefunden, dass man einen neuen       Azofarbstoff    erhält, wenn man die     Diazover-          bindung    des     1-Aminobenzol-4-riitro-2-methyl-          siilfons    in saurem Medium mit     1-Amino-8-          oxynaphthalin-3,

  6-disulfonsäure    vereinigt und  diesen so erhältlichen     Farbstoff    in alkalischem  Medium mit der     Diazoverbindung    von     4.Chlor-          2-aminodiphenyläther    umsetzt. Der neue     Azo-          farbstoff    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>  21,6 Teile     1-Aminobenzol-4-nitro-2-methyl-          sulfon    werden fein pulverisiert und nach be  kannten Methoden in     konz.    Schwefelsäure mit  7 Teilen     Natriumnitrit        diazotiert.    Diese     Dia-          zolösung    trägt man in Eiswasser ein und  gibt unter Rühren 31,9 Teile fein gefällte       1-Amino-8-oxynaphthalin-3,6-disulfonsäure    zu  und rührt ca. 3 Stunden bei gewöhnlicher  Temperatur.

   Dann trägt man das notwendige       Natriumcarbonat    ein und     vereingt    in alkali  schem Medium     finit    einer     Diazolösung    aus  22,1 Teilen     4-Chlor-2-aminodiphenyläther,    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.



      Additional patent to main patent No. 190424. Process for the production of a new azo dye. It has been found that a new azo dye is obtained if the diazo compound of 1-aminobenzene-4-nitro-2-methyl-silfons is mixed with 1-amino-8-oxynaphthalene-3 in an acid medium,

  Combined 6-disulfonic acid and this thus obtainable dye in an alkaline medium with the diazo compound of 4th chloro-2-aminodiphenyl ether reacted. 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.



  <I> Example: </I> 21.6 parts of 1-aminobenzene-4-nitro-2-methylsulfone are finely pulverized and concentrated in conc. Sulfuric acid diazotized with 7 parts of sodium nitrite. This diazole solution is poured into ice water and 31.9 parts of finely precipitated 1-amino-8-oxynaphthalene-3,6-disulfonic acid are added with stirring and the mixture is stirred for about 3 hours at ordinary temperature.

   Then you enter the necessary sodium carbonate and united in an alkaline medium finite a diazo solution of 22.1 parts of 4-chloro-2-aminodiphenyl ether, which is prepared 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, dass man die Diazoverbindung des 1-Aminobenzol- 4-nitro-2-methylsulfons in saurem Medium mit 1-Amino - 8 - oxynaphthalin - 3,6 - dis ulfonsäure vereinigt und diesen so erhältlichen Farb stoff in alkalischem Medium mit der Diazo- verbindung von 4-Chlor-2-aminodiphenyläther umsetzt. Claim: Process for the preparation of a new azo dye, characterized in that the diazo compound of 1-aminobenzene-4-nitro-2-methylsulfone is combined in an acidic medium with 1-amino-8-oxynaphthalene-3,6-disulfonic acid and this is so available dye in an alkaline medium with the diazo compound of 4-chloro-2-aminodiphenyl ether. Der neue Azofarbstoff bildet ein dunkles Pulver, das sich in Wasser mit blauer Farbe löst und Wolle aus saurem Bade in blau schwarzen Tönen von guten Echtheitseigen schaften färbt. _ 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. _
CH192045D 1936-01-30 1936-01-30 Process for the production of a new azo dye. CH192045A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH192045T 1936-01-30
CH190424T 1936-01-30

Publications (1)

Publication Number Publication Date
CH192045A true CH192045A (en) 1937-07-15

Family

ID=25721985

Family Applications (1)

Application Number Title Priority Date Filing Date
CH192045D CH192045A (en) 1936-01-30 1936-01-30 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH192045A (en)

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