CH265729A - Process for the preparation of a copper-compatible polyazo dye. - Google Patents

Process for the preparation of a copper-compatible polyazo dye.

Info

Publication number
CH265729A
CH265729A CH265729DA CH265729A CH 265729 A CH265729 A CH 265729A CH 265729D A CH265729D A CH 265729DA CH 265729 A CH265729 A CH 265729A
Authority
CH
Switzerland
Prior art keywords
copper
yellow
compatible
preparation
brown
Prior art date
Application number
Other languages
German (de)
Inventor
Ag J R Geigy
Original Assignee
Ag J R Geigy
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 Ag J R Geigy filed Critical Ag J R Geigy
Publication of CH265729A publication Critical patent/CH265729A/en

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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
    • C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/02—Disazo dyes
    • C09B35/039—Disazo dyes characterised by the tetrazo component
    • C09B35/28—Disazo dyes characterised by the tetrazo component the tetrazo component containing two aryl nuclei linked by at least one of the groups —CON<, —SO2N<, —SO2—, or —SO2—O—

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Description

  

  Zusatzpatent zum Hauptpatent Nr. 261125.    Verfahren zur Herstellung eines kupferbaren     Polyazofarbstoffes.       Gegenstand vorliegenden Patentes ist ein  Verfahren zur Herstellung eines kupferbaren       1'olyazofarbstoffes.    Das Verfahren ist da  durch gekennzeichnet, dass man 1     Mol    der       Tetrazoverbindung    von     1-(3'-Amino-4'-oxy-          benzoylamino)-4-amino-benzol-3.sulfonsäure     mit 2     Mol        1-(4'-Amino-phenyl)-3-methyl-5-          pyrazolon    kuppelt.    Der erhaltene neue     Disazofarbstoff    stellt.

    ein dunkelbraunes Pulver dar, das sich in       Wasser    mit gelbbrauner und in     konz.    Schwe  felsäure mit gelber Farbe löst und Fasern aus  natürlicher oder regenerierter     Cellulose    nach  gekupfert in gelbbraunen Tönen anfärbt,     wel-          ehe    vorzügliche     Echtheiten    aufweisen.

      <I>Beispiel:</I>    32,3 Teile 1-     (3'-Amirro-4'    -     oxy        -benzoyl-          amino)-4-amino-benzol-3-sulfonsäure    werden  in 400 Teilen Wasser mit 8 Teilen Natron  lauge kalt gelöst., mit 13,8 Teilen Natrium  riitrit     verniiseht    und in der Kälte unter Rüh  ren auf 40 Teile     konz.    Salzsäure und 80 Teile  Wasser     aufgetropft.    Nach dem Abstumpfen  der überschüssigen Mineralsäure mit Soda    vereinigt man die     Tetrazoverbindtrng    mit  einer alkalischen Lösung von 37,8 Teilen       1-(4'-Amino-phenyl)-3-methyl-5-p.#-razolon    in  800 Teilen Wasser und 20 Teilen Soda.

   Die  Kupplung tritt sofort ein, und nach mehreren  Stunden Rühren bei Zimmertemperatur ist  keine     Diazoreaktion    mehr nachweisbar. Der  erhaltene Farbstoff von der Formel  
EMI0001.0027     
  




  Additional patent to main patent No. 261125. Process for the production of a copper-compatible polyazo dye. The subject of the present patent is a process for the production of a copperable 1'olyazo dye. The process is characterized in that 1 mol of the tetrazo compound of 1- (3'-amino-4'-oxy-benzoylamino) -4-aminobenzene-3.sulfonic acid is mixed with 2 mol of 1- (4'-amino- phenyl) -3-methyl-5-pyrazolone. The new disazo dye obtained represents.

    represents a dark brown powder, which in water with yellow-brown and in conc. Sulfur acid dissolves with a yellow color and, after copper-plated, stains fibers made from natural or regenerated cellulose in yellow-brown tones, which have excellent fastness properties.

      <I> Example: </I> 32.3 parts of 1- (3'-amirro-4'-oxy-benzoyl-amino) -4-amino-benzene-3-sulfonic acid are dissolved in 400 parts of water with 8 parts of sodium hydroxide solution dissolved in cold water, mixed with 13.8 parts of sodium ritrite and concentrated in the cold to 40 parts with stirring. Hydrochloric acid and 80 parts of water were added dropwise. After the excess mineral acid has been blunted with soda, the tetrazo compound is combined with an alkaline solution of 37.8 parts of 1- (4'-aminophenyl) -3-methyl-5-p. # - razolone in 800 parts of water and 20 parts Soda.

   The coupling occurs immediately and after several hours of stirring at room temperature no more diazo reaction can be detected. The obtained dye of the formula
EMI0001.0027
  


 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines kupfer baren Polyazofarbstoffes, dadurch gekenn zeichnet, dass man 1 Mol der Tetrazoverbin- dung von 1-(3'-Amino-4'-oxy-benzoylamino)- 4-amino-benzol-3-sulfonsäure mit 2 Mol 1-(4'- Amino-phenyl)-3-methyl-5-pyrazolon kuppelt. PATENT CLAIM: A process for the production of a copper-free polyazo dye, characterized in that 1 mol of the tetrazo compound of 1- (3'-amino-4'-oxy-benzoylamino) -4-aminobenzene-3-sulfonic acid with Mole of 1- (4'-aminophenyl) -3-methyl-5-pyrazolone couples. Der erhaltene neue Disazofarbstoff stellt ein dunkelbraunes Pulver dar, das sich in Wasser mit gelbbrauner und in konz. Schwe felsäure mit gelber Farbe löst und Fasern aus natürlicher oder regenerierter Cellulose nach gekupfert in gelbbraLmen Tönen anfärbt, wel che vorzügliche Echtheiten aufweisen. The new disazo dye obtained is a dark brown powder, which in water with yellow-brown and in conc. Sulfur acid with a yellow color dissolves and, after copper-plated, stains fibers made of natural or regenerated cellulose in yellow-brown tones, which have excellent fastness properties.
CH265729D 1947-09-15 1947-09-15 Process for the preparation of a copper-compatible polyazo dye. CH265729A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH265729T 1947-09-15
CH261125T 1948-08-06

Publications (1)

Publication Number Publication Date
CH265729A true CH265729A (en) 1949-12-15

Family

ID=25730373

Family Applications (1)

Application Number Title Priority Date Filing Date
CH265729D CH265729A (en) 1947-09-15 1947-09-15 Process for the preparation of a copper-compatible polyazo dye.

Country Status (1)

Country Link
CH (1) CH265729A (en)

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