CH248696A - Process for the production of a metallizable polyazo dye. - Google Patents

Process for the production of a metallizable polyazo dye.

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Publication number
CH248696A
CH248696A CH248696DA CH248696A CH 248696 A CH248696 A CH 248696A CH 248696D A CH248696D A CH 248696DA CH 248696 A CH248696 A CH 248696A
Authority
CH
Switzerland
Prior art keywords
dye
metallizable
production
coupled
blue
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 CH248696A publication Critical patent/CH248696A/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
    • C09B35/50—Tetrazo dyes
    • C09B35/52—Tetrazo dyes of the type
    • 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
    • C09B35/38—Trisazo dyes ot the type
    • C09B35/44—Trisazo dyes ot the type the component K being a hydroxy amine
    • C09B35/46—Trisazo dyes ot the type the component K being a hydroxy amine the component K being an amino naphthol
    • 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
    • C09B35/50—Tetrazo dyes
    • C09B35/60—Tetrazo dyes of the type

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr.<B>243333.</B>    Verfahren zur Herstellung     eines        metallisierbaren        Polyazofarbstoffes.       Gegenstand vorliegenden Patentes ist ein  Verfahren zur Herstellung eines     metallisier-          baren        Polyazofarbstoffes.    Das.

   Verfahren ist  dadurch gekennzeichnet,     dass        1-Amino-8-o@xy-          ria.phthalin-3,6-disulfonsäure    erst in saurer  und     anschliessend    in alkalischer Lösung mit  je 1     Mol        diazotierter        5-Nitro-2-amino-benzoe-          säure    gekuppelt, nach Reduktion der     Nitro-          grippen    der     Diaminodisazofarbstoff        tetrazo-          tiert    und beidseitig     mit        ss-Naphthol    gekup  pelt wird.  



  Der neue     Tetrakisazofarbstoff    ist ein  dunkles Pulver,     :das    .sich in Wasser und in       konzentrierter    Schwefelsäure mit blaugrauer       Farbe    löst. Er färbt     Zellulosefasem    in blau  grauen Tönen. Beim Nachbehandeln mit  Kupfersalzen werden diese in der     Nuance     nur unwesentlich     verändert,    aber in den     Echt-          heiten    erheblich verbessert.  



       Beispiel:     18,2 Teile     5-Nitro-2-amino-benzoesäure     werden in üblicher Weise     diazatiert        und    in  mineralsaurem Medium mit 31,9 Teilen     1-          A.mino    - 8 -     oxy    -     naphthalin-    3,6 -     disulfonsäure     gekuppelt.

   Man macht mit überschüssiger  Soda alkalisch und vereinigt den erhaltenen       Monoazafarbstoff    mit einer aus 18,2 Teilen       5-Nitro-2-amino-benzoesäure,    6,9 Teilen Na  triumnitrit     und,der        nötigen    Menge Salzsäure  hergestellten     Diazoniumlösung.    Der fertig  gebildete     Disazofarbstoff    scheidet -sich in  bronzierenden Kristallen aus. Er wird abfil-         triert,    in der notwendigen Menge Wasser ge  löst und bei     35     mit 23,4 Teilen     Natrium-          sulfid    reduziert.

   Der mit Salzsäure     abge-          sahiedene        Diaminodisazefarbstoff    wird in       Sodalösung    gelöst, vom gebildeten     SUhwefel          abfiltriert,    mit 13,8 Teilen     Natriumnitrit    ver  mischt und in überschüssige verdünnte Salz  säure eingetropft. Nach einigen Stunden ist  die Bildung :der     Tetrazoverbindung    beendet.  Man     vereinigt    sie mit 28,8     Teilen        ss-Naph-          thol    in Gegenwart von 80 Teilen Soda.

   Nach  einiger Zeit ist die Kupplung beendet und  der     Tetrakisazofarbstoff    abgeschieden. Er  wird     abfiltriert,    mit     verdünnter    Sole ge  waschen und getrocknet.



      Additional patent to main patent no. <B> 243333. </B> Process for the production of a metallizable polyazo dye. The subject of the present patent is a process for the production of a metallizable polyazo dye. The.

   The method is characterized in that 1-amino-8-o @ xy- ria.phthalin-3,6-disulfonic acid is coupled first in acidic and then in alkaline solution with 1 mol of diazotized 5-nitro-2-aminobenzoic acid , after reduction of the nitro-fluids, the diaminodisazo dye is tetrazole and coupled with s-naphthol on both sides.



  The new tetrakisazo dye is a dark powder: that dissolves in water and in concentrated sulfuric acid with a blue-gray color. It dyes cellulose fibers in blue-gray tones. After treatment with copper salts, these are only slightly changed in shade, but their authenticity is considerably improved.



       Example: 18.2 parts of 5-nitro-2-aminobenzoic acid are diazated in the usual way and coupled with 31.9 parts of 1-amino-8-oxy-naphthalene-3,6-disulfonic acid in a mineral acid medium.

   It is made alkaline with excess soda and the monoaza dye obtained is combined with a diazonium solution prepared from 18.2 parts of 5-nitro-2-aminobenzoic acid, 6.9 parts of sodium nitrite and the necessary amount of hydrochloric acid. The finished disazo dye separates out in bronzing crystals. It is filtered off, dissolved in the necessary amount of water and reduced at 35 with 23.4 parts of sodium sulfide.

   The diaminodisaze dye separated with hydrochloric acid is dissolved in soda solution, the sulfur formed is filtered off, mixed with 13.8 parts of sodium nitrite and added dropwise to excess dilute hydrochloric acid. After a few hours the formation of the tetrazo compound is complete. They are combined with 28.8 parts of s-naphthol in the presence of 80 parts of soda.

   After some time, the coupling is complete and the tetrakisazo dye is deposited. It is filtered off, washed ge with dilute brine and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines metalli- sierbaren Bolyazofarbstoffes, dadurch ge kennzeichnet, dass 1- Amino - 8 - oxy - naph- thalin-3,6-disulfonsäure erst in saurer und anschliessend in alkalischer Lösung mit je 1 Mol diazotierter 5-Nitro-2-amino-benzoe- säure gekuppelt, PATENT CLAIM: Process for the production of a metallizable Bolyazo dye, characterized in that 1- amino - 8 - oxy - naphthalin-3,6-disulfonic acid first in acidic and then in alkaline solution with 1 mol of diazotized 5-nitro- 2-amino-benzoic acid coupled, nach Reduktion der Nitro- gruppen der Diaminodisazofarbstoff tetrazo- tiert und beidseitig mit ss-Naphthol gekup pelt wird. Der neue Tetrakisazofarbstoff ist ein dunkles Pulver, das sich in Wasser und in konzentrierter Schwefelsäure mit blaugrauer Farbe löst. Er färbt Zellulosefasern in blau grauen Tönen. after reduction of the nitro groups, the diaminodisazo dye is tetrazotized and coupled on both sides with β-naphthol. The new tetrakisazo dye is a dark powder that dissolves in water and in concentrated sulfuric acid with a blue-gray color. It dyes cellulose fibers in blue-gray tones.
CH248696D 1944-05-25 1944-05-25 Process for the production of a metallizable polyazo dye. CH248696A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH248696T 1944-05-25
CH243333T 1944-05-25

Publications (1)

Publication Number Publication Date
CH248696A true CH248696A (en) 1947-05-15

Family

ID=25728808

Family Applications (1)

Application Number Title Priority Date Filing Date
CH248696D CH248696A (en) 1944-05-25 1944-05-25 Process for the production of a metallizable polyazo dye.

Country Status (1)

Country Link
CH (1) CH248696A (en)

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