CH198059A - Process for the preparation of a polyazo dye. - Google Patents

Process for the preparation of a polyazo dye.

Info

Publication number
CH198059A
CH198059A CH198059DA CH198059A CH 198059 A CH198059 A CH 198059A CH 198059D A CH198059D A CH 198059DA CH 198059 A CH198059 A CH 198059A
Authority
CH
Switzerland
Prior art keywords
molecule
preparation
dye
blue
acid
Prior art date
Application number
Other languages
German (de)
Inventor
Sandoz Chemische Fabri Vormals
Original Assignee
Chem Fab Vormals Sandoz
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 Chem Fab Vormals Sandoz filed Critical Chem Fab Vormals Sandoz
Publication of CH198059A publication Critical patent/CH198059A/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
    • C09B35/38—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
    • C09B35/463—D being derived from diaminodiphenyl

Landscapes

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

Description

  

  Zusatzpatent zum Hauptpatent     Nr.    194457.    Verfahren zur Darstellung eines     Polyazofarbstoffes.       Das vorliegende Patent betrifft ein Ver  fahren zur Darstellung eines blauen     Polyazo-          larbstoffes    und- ist dadurch gekennzeichnet,       dass    man ein Molekül     Tetrazobenzidin    in  saurer Lösung mit einem Molekül     1,8-Amino-          naphtol   <B>- 3,6 -</B>     disulfonsäure    kombiniert,

   das       Zwischeaprodukt    zuerst mit einem Molekül       Diazobenzolparasulfonsäure    in alkalischer Lö  sung kuppelt und hierauf mit einem Molekül  des primären Kondensationsproduktes aus  einem Molekül     1,8-Amiiionaphtol-3,6-disul-          fonsäure    und einem Molekül     Cyanurchlorid,     
EMI0001.0015     
  
     <I>Beispiel:

  </I>  18,4 Teile     Benzidin    werden in der     übli-          chenWeise        tetrazotiert    und mit 34,1 Teilen       1,8-Aminonaphtol-3,6-disulfonsäure        (Mono-          natriumsalz)    mineralsauer gekuppelt. Ist die    Bildung des Zwischenproduktes beendet, so  wird es mit der     Diazoverbindung    aus<B>17,3</B>       Teilen'AminobenzolparasulfonsäLlre        sodaalka-          Lisch    vereinigt.

   Nach erfolgter Kupplung zum       Digazofarbstoff        lässt    man eine alkalische Lö  sung von 46,6 Teilen des primären Konden  sationsproduktes, hergestellt durch Konden  sation von<B>18,5</B> Teilen     Cyanurchlorid    mit  <B>31,9</B> Teilen     1,8-Aminonaphtol-3,6-disulfon-          säure,    zufliessen. Die Kupplung erfolgt rasch  und der Farbstoff wird durch     Aussalzen    der  angesäuerten Kupplungsflüssigkeit ausgeschie  den. Die nach der Filtration erhaltene saure       Farbstoffpaste    wird neutralisiert und zur  Trockne, verdampft.  



  Der neue Farbstoff stellt     ei#    grauschwar  zes, etwas bronzierendes, in Wasser mit tief  blauer Farbe lösliches Pulver dar und färbt  Leder verschiedenster     Gerbungsart    in schönen,  neutral blauen Tönen- an.



  Additional patent to main patent No. 194457. Process for the preparation of a polyazo dye. The present patent relates to a method for the preparation of a blue polyazolar material and is characterized in that one molecule of tetrazobenzidine in acidic solution is mixed with one molecule of 1,8-aminonaphtol <B> - 3,6 - </B> disulfonic acid combined,

   the intermediate product first couples with a molecule of diazobenzenesulfonic acid in alkaline solution and then with a molecule of the primary condensation product of one molecule of 1,8-amino-naphthol-3,6-disulfonic acid and a molecule of cyanuric chloride,
EMI0001.0015
  
     <I> example:

  18.4 parts of benzidine are tetrazotized in the usual way and coupled with 34.1 parts of 1,8-aminonaphthol-3,6-disulfonic acid (monosodium salt) in mineral acid form. When the formation of the intermediate product has ended, it is combined in a soda-alkali form with the diazo compound composed of 17.3 parts of aminobenzene-parasulfonic acid.

   After coupling to the digazo dye, an alkaline solution of 46.6 parts of the primary condensation product, produced by condensation of 18.5 parts of cyanuric chloride with 31.9 parts, is left 1,8-aminonaphthol-3,6-disulfonic acid, flow in. The coupling takes place quickly and the dye is eliminated by salting out the acidified coupling fluid. The acidic dye paste obtained after filtration is neutralized and evaporated to dryness.



  The new dye is a gray-black, somewhat bronzing powder that is soluble in water with a deep blue color and dyes leather of various types of tanning in beautiful, neutral blue tones.

Claims (1)

PATENTANSPRUCIEI: Verfahren zur Darstellung eines blauen Polyazofarbstoffes, dadurch gekennzeichnet, dass man ein Molekül Tetrazobenzidin in saurer Lösung mit einem Mollekül 1,8-Amino- naphtol <B>- 3,6 -</B> diSU1f0Dsäure kombiniert, das Zwischenprodukt zuerst mit einem Molekül Diazobenzolparasulfonsäure in alkalischer Lö- sung kuppelt und hierauf mit einem Molekül des primären Kondensationsproduktes aus einem Molekül 1,8-Aminonaphtol-3, PATENT CLAIM: Process for the preparation of a blue polyazo dye, characterized in that one molecule of tetrazobenzidine in acidic solution is combined with a Mollekül 1,8-amino naphthol <B> - 3,6 - </B> diSU1f0Däure, the intermediate product first with one Molecule of diazobenzenesulfonic acid in alkaline solution couples and then with a molecule of the primary condensation product from a molecule of 1,8-aminonaphthol-3, 6-disulfon- säure und einem Molekül Cyanurchlorid der Formel EMI0002.0012 vereinigt. Der neue Farbstoff stellt ein grausehwar- zes, etwas bronzierendes, in Wasser mit tief blauer Farbe, lösliches Pulver dar und färbt Leder verschiedenster Gerbungsart in schönen, neutral blauen Tönen an. 6-disulfonic acid and one molecule of cyanuric chloride of the formula EMI0002.0012 united. The new dye is a blackish-gray, somewhat bronzing powder that is soluble in water with a deep blue color and colors leather of various types of tanning in beautiful, neutral blue tones.
CH198059D 1937-03-13 1937-03-13 Process for the preparation of a polyazo dye. CH198059A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH198059T 1937-03-13
US1170174XA 1955-09-14 1955-09-14

Publications (1)

Publication Number Publication Date
CH198059A true CH198059A (en) 1938-05-31

Family

ID=25723058

Family Applications (1)

Application Number Title Priority Date Filing Date
CH198059D CH198059A (en) 1937-03-13 1937-03-13 Process for the preparation of a polyazo dye.

Country Status (1)

Country Link
CH (1) CH198059A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2993885A (en) * 1956-06-29 1961-07-25 Ciba Ltd 2-naphthylazo phenylamine-4, 6-dichlorotriazines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2993885A (en) * 1956-06-29 1961-07-25 Ciba Ltd 2-naphthylazo phenylamine-4, 6-dichlorotriazines

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