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CH194345A - Process for the preparation of a polyazo dye. - Google Patents

Process for the preparation of a polyazo dye.

Info

Publication number
CH194345A
CH194345A CH194345DA CH194345A CH 194345 A CH194345 A CH 194345A CH 194345D A CH194345D A CH 194345DA CH 194345 A CH194345 A CH 194345A
Authority
CH
Switzerland
Prior art keywords
dye
diazotized
green
water
polyazo
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH194345A publication Critical patent/CH194345A/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
    • C09B35/36—Trisazo dyes of the type

Landscapes

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

Description

  

      Perfabren    zur Herstellung eines     Polyazofarbstoffes.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung eines     Polya.zo-          farbstoffes,    dadurch gekennzeichnet, dass  man     diazotierte        4-Aminostilben-4'-azo-anisol-          2.2'-,disulfonsä@ure    mit     Aminohydroehinon-          dimethyläther    kuppelt,

   den so erhaltenen       Aminodisazofarbstoff        diazotiert    und in alka  lischer Lösung mit     2-Naphthol-3.        6-disulfon-          säure    kuppelt.  



  Der so erhaltene     Polyazofarbstoff    löst  sich in Wasser grün, in     konzentrierter     Schwefelsäure     violett    und färbt Baumwolle  bei     gutem    Ziehvermögen blaustichig .grün.  Die aus diesem Farbstoff hergestellte     Kupfer-          komplexverbindung    gibt auf Baumwolle       0livfärbungen    mit wesentlich verbesserter  Lichtechtheit.

   Ihre     Lösungsfarbe    in Wasser  ist     gelbstichig    grün, in konzentrierter     Bchwe-          felsäure        blauviolett:     <I>Beispiel:</I>  <B>51,1</B> Teile     4-Aminostilben-4'-azo-anisol-          2.2'-,disulfonsäure    werden in der üblichen       Weise        diazotiert    und in sodaalkalischer Lö-         sung    mit 15,2 Teilen     A.minobydrochinon-          dimethyläther    gekuppelt und ,

  gegebenenfalls  der Farbstoff     dureh        Umlösen    von überschüs  siger Kupplungskomponente befreit. Dann  wird mit 6,9 Teilen     Natriumnitrit    und -30  Teilen Salzsäure vom spezifischen     Gewicht     1,18     diazotiert    und in     pyridinhaltiger        Lösung     mit 26     Teilen        2-naplhthol-3.        6-disulfonsaurem     Natrium     zusammengebracht.    Nach Beendi  gung der     Kupplung    wird der Farbstoff  durch     Aussalzen        abgeschieden.  



      Perfabren for the production of a polyazo dye. The present patent relates to a process for the production of a polya.zo dye, characterized in that diazotized 4-aminostilbene-4'-azo-anisole-2.2 '-, disulfonic acid is coupled with aminohydroehinone dimethyl ether,

   the aminodisazo dye thus obtained is diazotized and in alkali solution with 2-naphthol-3. 6-disulfonic acid couples.



  The polyazo dye obtained in this way dissolves green in water and violet in concentrated sulfuric acid and dyes cotton with a bluish tinge of green with good drawability. The copper complex compound produced from this dye gives olive dyeings to cotton with significantly improved lightfastness.

   Their solution color in water is yellowish green, in concentrated bulfuric acid blue-violet: <I> Example: </I> <B> 51.1 </B> parts 4-aminostilbene-4'-azo-anisole-2.2'- Disulfonic acid is diazotized in the usual way and coupled with 15.2 parts of A.minobydroquinone dimethyl ether in a soda-alkaline solution and,

  if necessary, the dye is freed from excess coupling component by dissolving. It is then diazotized with 6.9 parts of sodium nitrite and -30 parts of hydrochloric acid with a specific weight of 1.18 and in a pyridine-containing solution with 26 parts of 2-naplhthol-3. 6-disulfonic acid sodium brought together. After the coupling has ended, the dye is deposited by salting out.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Polyazo- farbstoffes, dadurch gekennzeichnet, dass man diazotierte 4-Aminos@tilben-4'-azo-anisal-2. 2'- disulfonsäure mit Aminohydroclhinondime- tyläther kuppelt, PATENT CLAIM: Process for the production of a polyazo dye, characterized in that diazotized 4-aminos @ tilbene-4'-azo-anisal-2. 2'-disulfonic acid couples with aminohydroclhinondimethyl ether, den so erhaltenen' Amino- disazofarbstoff diazotiert und in alkalischer Lösung mit 2-Naphthol-3.6-dioulfonsäure kuppelt. the amino disazo dye thus obtained is diazotized and coupled in an alkaline solution with 2-naphthol-3,6-dioulfonic acid. Der so erhaltene Polyazofarbstoff löst sich in Wasser ,grün, in konzentrierter @Schwefel- säure violett und färbt Baumwolle bei gutem Ziehvermögen blaustichig grün. Die aus die sem Farbstoff hergestellte Kupferkompleg- verbindung gibt auf Baumwolle Olivfärbun- gen mit wesentlich verbesserter Lichtechtheit. Ihre Lösungsfarbe in Wasser ist The polyazo dye obtained in this way dissolves in water, green, in concentrated sulfuric acid violet and dyes cotton with a bluish green tinge with good drawability. The copper complex made from this dye gives cotton olive dyes with significantly improved lightfastness. Your solution color is in water :gelbstichig grün, in konzentrierter Schwefelsäure blau violett. : yellowish green, in concentrated sulfuric acid blue violet.
CH194345D 1935-12-04 1935-12-04 Process for the preparation of a polyazo dye. CH194345A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH188026T 1935-12-04
CH194345T 1935-12-04

Publications (1)

Publication Number Publication Date
CH194345A true CH194345A (en) 1937-11-30

Family

ID=25721604

Family Applications (1)

Application Number Title Priority Date Filing Date
CH194345D CH194345A (en) 1935-12-04 1935-12-04 Process for the preparation of a polyazo dye.

Country Status (1)

Country Link
CH (1) CH194345A (en)

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