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CH106702A - Process for the production of an azo dye particularly suitable for chrome printing on cotton. - Google Patents

Process for the production of an azo dye particularly suitable for chrome printing on cotton.

Info

Publication number
CH106702A
CH106702A CH106702DA CH106702A CH 106702 A CH106702 A CH 106702A CH 106702D A CH106702D A CH 106702DA CH 106702 A CH106702 A CH 106702A
Authority
CH
Switzerland
Prior art keywords
cotton
brown
production
particularly suitable
azo 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 CH106702A publication Critical patent/CH106702A/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
    • C09B45/24—Disazo or polyazo compounds
    • C09B45/26—Disazo or polyazo compounds containing chromium
    • 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
    • C09B33/04—Disazo dyes in which the coupling component is a dihydroxy or polyhydroxy compound
    • 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
    • C09B45/38—Preparation from compounds with —OH and —COOH adjacent in the same ring or in peri position
    • C09B45/40—Chromium compounds

Landscapes

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 94229.    Verfahren zur Herstellung eines für den     ühromdruck    auf Baumwolle     besonders     geeigneten     Azofarbstoffes.       Es wurde gefunden, dass man durch Kup  peln von zwei     Mol.        diazotierter        1-Oxy-2-          amino-4-nitrobenzol-6-karbonsäure    mit einem       Mol.        Resorcylsäure    einen     Azofarbstoff    er  hält, welcher bei dem Chromdruck auf Baum  wolle braunstickig gelbe Töne von guten  Echtheitseigenschaften erzeugt.

      <I>Beispiel:</I>    Die     Diazoverbindung    aus 19,8 Teilen 1  Oxy-2-amino-4-nitrobenzol-6-karbonsäure, 15  Teilen     Salzsäure    und 6,9 Teilen Natrium  nitrit lässt man in eine konzentrierte Lösung  von 7,7 Teilen     Resorcylsäure    einfliessen. Nach  mehrstündigem Rühren ist keine     Diazover-          bindung    mehr nachweisbar. Der gebildete  Farbstoff wird aus der Lösung durch Sätti  gen     derselben    mit     Kochsalz    ausgefällt.  



  Der neue Farbstoff löst sich in Wasser  mit gelbbrauner Farbe, welche Lösung auf  Zusatz von Natronlauge rotbraun wird. In  konzentrierter Schwefelsäure ist er mit braun-    roter Farbe löslich. Mit Chromacetat auf  Baumwolle gedruckt, erzeugt er ein braun  stickiges Gelb von guten Echtheitseigen  schaften.



      Additional patent to main patent no. 94229. Process for the production of an azo dye particularly suitable for chromium printing on cotton. It has been found that by coupling two moles of diazotized 1-oxy-2-amino-4-nitrobenzene-6-carboxylic acid with one mole of resorcylic acid, an azo dye is obtained which, when printed on chrome, is brownish-yellow in color good fastness properties.

      <I> Example: </I> The diazo compound from 19.8 parts of 1-oxy-2-amino-4-nitrobenzene-6-carboxylic acid, 15 parts of hydrochloric acid and 6.9 parts of sodium nitrite is left in a concentrated solution of 7 7 parts of resorcylic acid are poured in. After several hours of stirring, no more diazo compound can be detected. The dye formed is precipitated from the solution by saturating the same with common salt.



  The new dye dissolves in water with a yellow-brown color, which solution turns red-brown when sodium hydroxide is added. It is soluble in concentrated sulfuric acid with a brownish-red color. Printed on cotton with chrome acetate, it produces a brown, stuffy yellow with good fastness properties.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines für den Chromdruck äuf Baumwolle besonders geeig neten Azofarbstoffes, dadurch gekennzeich net, dass zwei Mol. diazotierte 1-Oxy-2-amino- 4-nitrobenzol-6-karbonsäure mit einem Mol. Resorcylsäure gekuppelt werden. Der neue Farbstoff löst sich in Wasser mit gelbbrauner Farbe, welehe Lösung auf Zusatz von Natronlauge rotbraun wird. In konzentrierter Schwefelsäure ist er mit braun roter Farbe löslich. PATENT CLAIM: Process for the production of an azo dye particularly suitable for chrome printing on cotton, characterized in that two moles of diazotized 1-oxy-2-amino-4-nitrobenzene-6-carboxylic acid are coupled with one mole of resorcylic acid. The new dye dissolves in water with a yellow-brown color, which solution turns red-brown when sodium hydroxide is added. It is soluble in concentrated sulfuric acid with a brown-red color. Mit Chromacetat auf Baumwolle gedruckt, erzeugt er ein braun stickiges Gelb von guten Echtheitseigen schaften. Printed on cotton with chrome acetate, it produces a brown, stuffy yellow with good fastness properties.
CH106702D 1921-03-15 1923-06-07 Process for the production of an azo dye particularly suitable for chrome printing on cotton. CH106702A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH94229T 1921-03-15
CH106702T 1923-06-07

Publications (1)

Publication Number Publication Date
CH106702A true CH106702A (en) 1924-09-01

Family

ID=25704795

Family Applications (1)

Application Number Title Priority Date Filing Date
CH106702D CH106702A (en) 1921-03-15 1923-06-07 Process for the production of an azo dye particularly suitable for chrome printing on cotton.

Country Status (1)

Country Link
CH (1) CH106702A (en)

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