CH265418A - Process for the preparation of a stilbene dye. - Google Patents

Process for the preparation of a stilbene dye.

Info

Publication number
CH265418A
CH265418A CH265418DA CH265418A CH 265418 A CH265418 A CH 265418A CH 265418D A CH265418D A CH 265418DA CH 265418 A CH265418 A CH 265418A
Authority
CH
Switzerland
Prior art keywords
dye
azo
preparation
stilbene
stilbene dye
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 CH265418A publication Critical patent/CH265418A/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
    • C09B56/00—Azo dyes containing other chromophoric systems
    • C09B56/04—Stilbene-azo dyes

Landscapes

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

Description

  

  Verfahren zur Herstellung eines     Stilbenfarbstoffes.       Gegenstand vorliegenden Patentes ist ein  Verfahren zur Herstellung eines     Stilbenfarb-          stoffes.    Das Verfahren ist dadurch gekenn-    zeichnet, dass ein     Nitrostilben-bis-triazol    der  Formel  
EMI0001.0005     
    mit dem     Azofarbstoff        5'-Amino-benzoesäure-          (2'-azo-4)-1-phenyl-3-methyl-5-pyrazolon    in al  kalischem Medium kondensiert wird. Der neue  Farbstoff stellt ein gelbes Pulver dar und  färbt     Cellulosefasern    in gelben Tönen.

   Durch       Naehbehandlung    mit Kupfer- oder Chromsal  zen kann die gute Wasch- und Wasserechtheit  noch weiter verbessert werden.         Beispiel:     Man kuppelt 40 Teile     diazotierte        4,4'-Ni-          troamino-stilben-2,2'-disulfosäure    mit 35,0 Tei  len 5 -     Amino    - 2 -     (4'-oxy-3        =carboxy-phenyl)    -     6-          sulfo-1,

  3-benztriazol    und oxydiert den     Azo-          farbstoff    in bekannter Weise zum     Nitrostilben-          bis-triazol.    Die Nitroverbindung ist ein gelbes    Pulver, das sich in Wasser mit gelber Farbe  löst.  



  Kondensiert man 75,9 Teile diese Nitrostil- ,       ben-bis-triazols    mit 33,6 Teilen des verseiften,  bzw. mit     Natriumsulfid    reduzierten,     Azofarb-          stoffes    aus     1-Amino-4-acetylamino-,    bzw. -4  nitro-benzol-2-earbonsäure     -.->.        1-Phenyl-3-          znethy        1-5-pyrazolon    in 1700 Teilen Wasser und ,  300 Teilen Natronlauge von 36      B6    in üblicher  Weise, so erhält man nach dem Isolieren einen  gelben Farbstoff.



  Process for the preparation of a stilbene dye. The subject of the present patent is a process for the production of a stilbene dye. The process is characterized in that a nitrostilbene-bis-triazole of the formula
EMI0001.0005
    with the azo dye 5'-amino-benzoic acid- (2'-azo-4) -1-phenyl-3-methyl-5-pyrazolone is condensed in alkaline medium. The new dye is a yellow powder and dyes cellulose fibers in yellow tones.

   The good fastness to washing and water can be further improved by sewing on with copper or chromium salts. Example: 40 parts of diazotized 4,4'-nitroamino-stilbene-2,2'-disulfonic acid are coupled with 35.0 parts of 5 - amino - 2 - (4'-oxy-3 = carboxy-phenyl) - 6 - sulfo-1,

  3-benzotriazole and oxidizes the azo dye in a known manner to nitrostilbene-bis-triazole. The nitro compound is a yellow powder that dissolves in water with a yellow color.



  If 75.9 parts of this nitrostil-, ben-bis-triazole are condensed with 33.6 parts of the saponified or sodium sulfide-reduced azo dyes from 1-amino-4-acetylamino or -4 nitro-benzene 2-carboxylic acid -.->. 1-Phenyl-3-methylene 1-5-pyrazolone in 1700 parts of water and 300 parts of sodium hydroxide solution of 36 B6 in the customary manner, a yellow dye is obtained after isolation.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Stilben- farbstoffes, dadurch gekennzeichnet, dass ein Nitrostilben-bis-triazol der Formel EMI0002.0001 mit dem Azofarbstoff 5'-Arnino-benzoesäure- (2'-azo-4)-1-phenyl-3-methyl-5-pyrazolon in al kalischem Medium kondensiert wird. Der neue Farbstoff stellt ein gelbes Pulver dar und färbt Celh-dosefasern in gelben Tönen. Durch Nachbehandlung mit Kupfer- oder Chromsal zen kann die gute Wasch- und Wasserechtheit noch weiter verbessert werden. PATENT CLAIM: Process for the production of a stilbene dye, characterized in that a nitrostilbene-bis-triazole of the formula EMI0002.0001 is condensed with the azo dye 5'-amino-benzoic acid- (2'-azo-4) -1-phenyl-3-methyl-5-pyrazolone in alkaline medium. The new dye is a yellow powder and dyes Celhdose fibers in yellow tones. The good fastness to washing and water can be further improved by subsequent treatment with copper or chromium salts.
CH265418D 1944-11-24 1944-11-24 Process for the preparation of a stilbene dye. CH265418A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH265418T 1944-11-24
CH260575T 1944-11-24

Publications (1)

Publication Number Publication Date
CH265418A true CH265418A (en) 1949-11-30

Family

ID=25730317

Family Applications (1)

Application Number Title Priority Date Filing Date
CH265418D CH265418A (en) 1944-11-24 1944-11-24 Process for the preparation of a stilbene dye.

Country Status (1)

Country Link
CH (1) CH265418A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10858585B2 (en) 2018-01-03 2020-12-08 Ecolab Usa Inc. Benzotriazole derivatives as corrosion inhibitors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10858585B2 (en) 2018-01-03 2020-12-08 Ecolab Usa Inc. Benzotriazole derivatives as corrosion inhibitors

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