CH192042A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH192042A
CH192042A CH192042DA CH192042A CH 192042 A CH192042 A CH 192042A CH 192042D A CH192042D A CH 192042DA CH 192042 A CH192042 A CH 192042A
Authority
CH
Switzerland
Prior art keywords
new azo
production
azo dye
combined
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 CH192042A publication Critical patent/CH192042A/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-2-methylsulfons     in saurem Medium mit     1-Amino-8-oxynaph-          thalin-3,

  6-disulfonsäure    vereinigt und diesen  so erhältlichen     Farbstoff    in alkalischem Me  dium 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.  



       Beispiel:     17,1 Teile     1-Aminobenzol-2-methylsulfon     werden fein pulverisiert, mit 30 Teilen Salz  säure und 30 Teilen Wasser gut angeschwemmt  und bei 50  in Lösung gebracht. Beim Ab  kühlen fällt das Chlorhydrat 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 etwa 20 Minuten ist die     Diazotierung     fertig.

   Diese     Diazolösung    giesst man nun unter  Rühren zu 31,9 Teilen fein gefällter     1-Amino-          8-oxynaphthalin-3,6-disulfonsäure    und rührt  etwa 3 Stunden bei gewöhnlicher Temperatur.  Dann trägt man 35 Teile Natriumkarbonat  ein und vereinigt     sodaalkalisch    mit einer       Diazolösung    aus 22,1 Teilen     4-Chlor-2-amino-          diphenyläther,    die auf bekannte Weise her  gestellt wird. Der Farbstoff fällt aus und  wird     abfiltriert.    Durch     Umlösen    und Aus  salzen 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-2-methylsulfone is mixed in an acidic medium with 1-amino-8-oxynaphthalene-3,

  6-disulfonic acid combined and this dye thus obtainable in alkaline Me with the diazo compound of 4-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.



       Example: 17.1 parts of 1-aminobenzene-2-methylsulfone are finely pulverized, washed thoroughly with 30 parts of hydrochloric acid and 30 parts of water and dissolved at 50. When cooling down, the chlorohydrate 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. Diazotization is finished after about 20 minutes.

   This diazo solution is then poured into 31.9 parts of finely precipitated 1-amino-8-oxynaphthalene-3,6-disulfonic acid with stirring and stirred for about 3 hours at normal temperature. 35 parts of sodium carbonate are then introduced and combined with a soda-alkaline solution with a diazo solution of 22.1 parts of 4-chloro-2-aminodiphenyl ether, which is made 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 Azofarbatoffes, dadurch gekennzeichnet, dass man die Diazoverbindung des. 1-Aminobenzol- 2-methylsulfons in saurem Medium mit 1.Amino.8.oxynaphthalin.3,6.disulfonsäure ver. einigt und diesen so erhältlichen Farbstoff in alkalischem Medium mit der Diazoverbindung von 4-Chlor-2-aminodiphenyläther umsetzt. PATENT CLAIM: Process for the production of a new azo carbate, characterized in that the diazo compound of 1-aminobenzene-2-methylsulfone is combined in an acidic medium with 1.amino.8.oxynaphthalene.3,6.disulfonic acid and this dye obtainable in this way is combined reacts 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.
CH192042D 1936-01-30 1936-01-30 Process for the production of a new azo dye. CH192042A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH190424T 1936-01-30
CH192042T 1936-01-30

Publications (1)

Publication Number Publication Date
CH192042A true CH192042A (en) 1937-07-15

Family

ID=25721982

Family Applications (1)

Application Number Title Priority Date Filing Date
CH192042D CH192042A (en) 1936-01-30 1936-01-30 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH192042A (en)

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