CH192049A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH192049A
CH192049A CH192049DA CH192049A CH 192049 A CH192049 A CH 192049A CH 192049D A CH192049D A CH 192049DA CH 192049 A CH192049 A CH 192049A
Authority
CH
Switzerland
Prior art keywords
azo dye
new azo
production
aminobenzene
methylsulfone
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 CH192049A publication Critical patent/CH192049A/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-methylsulfons     in saurem Medium mit     1-Amino-8-oxynaphta-          lin-3,        6-disulfonsäure    vereinigt und diesen so  erhältlichen Farbstoff in alkalischem Medium  mit der     Diazoverbindung    von     1-Aminobenzol-          3-methylsiilfon    umsetzt.

   Der neue     Azofarb-          stoff    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>  17,1 Teile     1-Aminobenzol-4-methylsulfon     werden fein pulverisiert, mit 30 Teilen Salz  säure und 30 Teilen Wasser gut ange  schwemmt und bei<B>50'</B> in Lösung gebracht.  Beim Abkühlen 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    zu-    tropfen.

   Nach zirka 20 Minuten ist die     Diazo-          tierung    fertig. Diese     Diazolösung    giesst man  nun unter Rühren zu 31,9 Teilen fein ge  fällter     1-Amirio-8-oxynaphthalin-3,        6-disulfon-          säure    und rührt zirka 3 Stunden bei gewöhn  licher Temperatur. Dann trägt man 35 Teile       Natriumcarbonat    ein und vereinigt     sodaalka-          lisch    mit einer     Diazoliisung    aus 17,1 Teilen       1-Aminobenzol-3-methylsulfon,    die auf be  kannte 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-methylsulfone is combined with 1-amino-8-oxynaphthalene-3,6-disulfonic acid in an acidic medium and this dye obtainable in this way reacts in an alkaline medium with the diazo compound of 1-aminobenzene-3-methylsiilfon.

   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> 17.1 parts of 1-aminobenzene-4-methylsulfone are finely powdered, washed well with 30 parts of hydrochloric acid and 30 parts of water and dissolved at <B> 50 '</B> . On cooling, 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-aminio-8-oxynaphthalene-3,6-disulfonic acid with stirring and stirred for about 3 hours at the usual temperature. 35 parts of sodium carbonate are then introduced and combined with a soda-alkaline solution of 17.1 parts of 1-aminobenzene-3-methylsulfone 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-methylsulfons in saurem Medium mit l.- Aminö-8-oxyriaphthalin-3, 6-disulfonsäure ver- einigt und diesen so erhältlichen Farbstoff in alkalischem Medium mit der Diazoverbin- Jung von 1-Aminobenzol-3-methylsulfon um setzt. PATENT CLAIM: A process for the production of a new azo dye, characterized in that the diazo compound of 1-aminobenzene-4-methylsulfone is combined in an acidic medium with 1.-amino-8-oxyriaphthalene-3,6-disulfonic acid and this dye which can be obtained in this way in an alkaline medium with the Diazoverbin- Jung of 1-aminobenzene-3-methylsulfone sets. Der neue Azofarbstoff bildet ein dunkles Pulver, das sich in Wasser mit blauer Farbe löst und Wolle aus saurere 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 acidic baths in blue-black shades with good fastness properties.
CH192049D 1936-01-30 1936-01-30 Process for the production of a new azo dye. CH192049A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH190424T 1936-01-30
CH192049T 1936-01-30

Publications (1)

Publication Number Publication Date
CH192049A true CH192049A (en) 1937-07-15

Family

ID=25721989

Family Applications (1)

Application Number Title Priority Date Filing Date
CH192049D CH192049A (en) 1936-01-30 1936-01-30 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH192049A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997027248A3 (en) * 1996-01-25 1997-08-28 Basf Ag Acid disazo dyes as well as sulphonamides as their intermediate product

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997027248A3 (en) * 1996-01-25 1997-08-28 Basf Ag Acid disazo dyes as well as sulphonamides as their intermediate product
US6130320A (en) * 1996-01-25 2000-10-10 Basf Aktiengesellschaft Acid disazo dyes as well as sulphonamides as their intermediate product

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