CH265728A - 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
CH265728A
CH265728A CH265728DA CH265728A CH 265728 A CH265728 A CH 265728A CH 265728D A CH265728D A CH 265728DA CH 265728 A CH265728 A CH 265728A
Authority
CH
Switzerland
Prior art keywords
copper
yellow
preparation
compatible
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 CH265728A publication Critical patent/CH265728A/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
    • 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—

Landscapes

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

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 261125.    <B>Verfahren zur Herstellung eines kupferbaren</B>     Polyazofarbatoffes.       Gegenstand vorliegenden Patentes ist ein  Verfahren zur Herstellung eines kupferbaren       Polyazofarbstoffes.    Das Verfahren ist da  durch gekennzeichnet, dass man 1     Mol    der       Tetrazoverbindung    von     1-(4'-Amino-3'-oxy-          benzoylamino)    - 4 -     amino        -benzol-3-carbonsäure     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     Celhilose    nach  gekupfert in gelbbraunen Tönen anfärbt,  welche     vorzügliche        Echtheiten    aufweisen.

      <I>Beispiel:</I>    28,7 Teile     1-(4'-Amino-3'-oxy-benzoyl-          amino)-4-aminobenzol-3-carbonsäure    werden  in 400 Teilen Wasser mit 8 Teilen Natron  lauge kalt gelöst, mit 13,8 Teilen Natrium  nitrit vermischt 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     Tetrazoverbindung    mit  einer alkalischen Lösung von 37,8 Teilen       1-(4'-Amino-phenyl)-3-methyl-5-pyrazolon    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 der Formel  
EMI0001.0027     
    wird mit Kochsalz abgeschieden,     abfiltriert    und getrocknet.



  <B> Additional patent </B> to main patent no. 261125. <B> Process for the production of a copperable </B> polyazo-carbate. The present patent relates to a process for the preparation of a copperable polyazo dye. The process is characterized in that 1 mol of the tetrazo compound of 1- (4'-amino-3'-oxybenzoylamino) -4-amino-benzene-3-carboxylic acid is mixed with 2 mol 1- (4'-amino phenyl) -3-methyl-5-pyrazolone.

      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 from natural or regenerated Celhilose in yellow-brown tones, which have excellent fastness properties.

      <I> Example: </I> 28.7 parts of 1- (4'-amino-3'-oxy-benzoyl-amino) -4-aminobenzene-3-carboxylic acid are dissolved cold in 400 parts of water with 8 parts of sodium hydroxide solution , mixed with 13.8 parts of sodium nitrite and concentrated in the cold with stirring to 40 parts. 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-pyrazolone in 800 parts of water and 20 parts of 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
    is precipitated with common salt, filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines kupfer baren Polyazofarbstoffes, dadurch gekenn zeichnet, dass man 1 Mol der Tetrazoverbin- dung von 1-(4'-Amino-3'-oxy-benzoylamino)- 4-amino-benzol-3-carbonsäure mit 2 Mol 1-(4' Amino-phenyl)-3-methyl-5-pyrazolon kuppelt. PATENT CLAIM: Process for the production of a copper-free polyazo dye, characterized in that 1 mol of the tetrazo compound of 1- (4'-amino-3'-oxy-benzoylamino) -4-aminobenzene-3-carboxylic acid is mixed with 2 Moles 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- gek,ipfert in gelbbraunen 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 fibers made of natural or regenerated cellulose are re-colored, ipfert dyed in yellow-brown tones, which have excellent fastness properties.
CH265728D 1947-09-15 1947-09-15 Process for the preparation of a copper-compatible polyazo dye. CH265728A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH265728T 1947-09-15
CH261125T 1948-08-06

Publications (1)

Publication Number Publication Date
CH265728A true CH265728A (en) 1949-12-15

Family

ID=25730372

Family Applications (1)

Application Number Title Priority Date Filing Date
CH265728D CH265728A (en) 1947-09-15 1947-09-15 Process for the preparation of a copper-compatible polyazo dye.

Country Status (1)

Country Link
CH (1) CH265728A (en)

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