CH228823A - Process for the preparation of a stilbene dye. - Google Patents

Process for the preparation of a stilbene dye.

Info

Publication number
CH228823A
CH228823A CH228823DA CH228823A CH 228823 A CH228823 A CH 228823A CH 228823D A CH228823D A CH 228823DA CH 228823 A CH228823 A CH 228823A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
stilbene
acid
copper
Prior art date
Application number
Other languages
German (de)
Inventor
J R Geigy A G
Original Assignee
Geigy Ag J R
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 Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH228823A publication Critical patent/CH228823A/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

  

      Zusatzpatent    zum     Hauptpatent    Nr. 217234.    Verfahren zur Darstellung eines     Stilbenfarbstoffes.       Gegenstand des vorliegenden Zusatzpaten  tes ist     ein        Verfahren    zur Darstellung eines       Stilbenfarbstoffes,    dadurch gekennzeichnet,  dass     mau        4,4'-Dinitrostilben-2,2'-@disulf        ansäure     mit     :

  dem        Azofarbstoff        4-Chlor-2=amino-l-oxy-          benzol        ->    -     5'-Oxy-2-(3--aminophenyl)-(naph-          tho-1',2',4,5-oxazo-Ir)-7'-sulfonsäure    kondensiert  und das     Kondensationspro-dukt    anschliessend  mit     kupferabgebenden        Mitteln    behandelt.

      <I>Beispiel:</I>  53 Teile de ,     Farbstoffes,    hergestellt durch  Kuppeln von     ,dianotiertem        4-Ch#lor-2-amino-l-          oxybenzol    mit 5'-     Oxy-2-        (3-aminophenyl)        -          (n.aphtho-1',2',4,5-oxazol)-7'-sulfonsäure    in  alkalischer     Lösung    in Gegenwart von     Pyri-          din,    werden mit 47,4 Teilen     4,4'-dinitrostil-          ben-2,2'-d'Lsulfons,

  aurem    Natrium in 300 Tei  len Wasser und 60     Teilen    Natronlauge von       36'B6    4-5     Stunden    bei Siedetemperatur  unter     Rückfluss        kondensiert.    Nach dem Ab  kühlen wird mit     Salzsäure    die Natronlauge       zurückgestumpft"der    Farbstoff mit Kochsalz  vollends     ausgefällt    und     abfiltriert.       Der     Farbstoff    wird mit     kupferabgebenden          Mitteln        in,

      üblicher     Weise    in die     Kupferver-          bindung        übergeführt.    Die     Kupferverbindung     stellt     getrocknet        ein    braunschwarzes     Pulver     dar, löst sich in     Wasser    mit     brauner,        in    kon  zentrierter     Schwefelsäure    mit blauroter Farbe  und färbt     Gellulüsefasern    in sehr lichtechten       gelbbraunen    Tönen.



      Additional patent to main patent No. 217234. Process for the preparation of a stilbene dye. The subject of the present additional patent is a process for the preparation of a stilbene dye, characterized in that 4,4'-dinitrostilbene-2,2 '- @ disulfanic acid with:

  the azo dye 4-chloro-2 = amino-1-oxybenzene -> - 5'-oxy-2- (3 - aminophenyl) - (naphtho-1 ', 2', 4,5-oxazo-Ir ) -7'-sulfonic acid condenses and the condensation product is then treated with copper-releasing agents.

      <I> Example: </I> 53 parts of the dye made by coupling dianotated 4-Ch # lor-2-amino-l-oxybenzene with 5'-oxy-2- (3-aminophenyl) - (n .aphtho-1 ', 2', 4,5-oxazole) -7'-sulfonic acid in alkaline solution in the presence of pyridine, with 47.4 parts 4,4'-dinitrostilben-2,2'- d'Lsulfons,

  Acid sodium condensed in 300 parts of water and 60 parts of sodium hydroxide solution from 36'B6 for 4-5 hours at boiling temperature under reflux. After cooling, the sodium hydroxide solution is blunted with hydrochloric acid "the dye is completely precipitated with common salt and filtered off. The dye is treated with copper-releasing agents in,

      usually converted into the copper connection. The copper compound is a brownish-black powder when dried, dissolves in water with brown, in concentrated sulfuric acid with a bluish-red color and dyes gelatine fibers in very lightfast yellow-brown shades.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Stilb;en- farbstoffes, daidürch ,gehennzeichnet, dass man 4,4'-Dinitro,stilben-2,2'-,disulfousäure mit dem Azofarbstoff 4-Chlor-2-amino-l-oxybenzo#l -> 5'- Oxy-2-(3-aminophonyl) - (n@aphtha-1', 2',4,5-oxazol)-7'-s: Claim: Process for the preparation of a stilbene dye, daidürch, is characterized in that 4,4'-dinitro, stilbene-2,2 '-, disulfous acid is mixed with the azo dye 4-chloro-2-amino-1-oxybenzo # l -> 5'- Oxy-2- (3-aminophonyl) - (n @ aphtha-1 ', 2', 4,5-oxazole) -7'-s: ulfonsäure kondensiert und ,das Kondensationsprodukt anschliessend mit kupferabgebenden Mitteln behandelt. Der neue Farbstoff ,stellt ein braunschwar zes Pulver dar, das sich in Wasser mit brau ner, in konzentrierter Schwefelsäure mit blau roter Farbe löst und Gellulosefasern in gelb braunen Tönen von sehr guter Lichechtheit färbt. Sulphonic acid condenses and the condensation product is then treated with copper-releasing agents. The new dye is a brownish-black powder that dissolves in water with a brown color and in concentrated sulfuric acid with a blue-red color and colors gelulose fibers in yellow-brown shades of very good lightfastness.
CH228823D 1939-07-03 1939-07-03 Process for the preparation of a stilbene dye. CH228823A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH228823T 1939-07-03
CH217234T 1940-11-20

Publications (1)

Publication Number Publication Date
CH228823A true CH228823A (en) 1943-09-15

Family

ID=25725951

Family Applications (1)

Application Number Title Priority Date Filing Date
CH228823D CH228823A (en) 1939-07-03 1939-07-03 Process for the preparation of a stilbene dye.

Country Status (1)

Country Link
CH (1) CH228823A (en)

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