CH198056A - Process for the preparation of a polyazo dye. - Google Patents

Process for the preparation of a polyazo dye.

Info

Publication number
CH198056A
CH198056A CH198056DA CH198056A CH 198056 A CH198056 A CH 198056A CH 198056D A CH198056D A CH 198056DA CH 198056 A CH198056 A CH 198056A
Authority
CH
Switzerland
Prior art keywords
molecule
preparation
dye
acid
combined
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 CH198056A publication Critical patent/CH198056A/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     Polyazofarbstofes.       Das vorliegende Patent     betrifft    ein Ver  fahren zur Darstellung eines blauen     Trisazo-          farbstoffes,    .und ist dadurch gekennzeichnet,  dass man ein Molekül     Tetrazobenzidin    in  saurer Lösung mit einem Molekül     1,8-Amirro-          naphtol    - 3,6 -     disulfonsäure    kombiniert,

   das  Zwischenprodukt zuerst mit einem Molekül       Diazobenzolparasulfonsäure    in alkalischer Lö  sung kuppelt und hierauf mit einem Molekül       N-Acetyl-1,8-aminonaphtol-    3,6 -     disulfonsäure     vereinigt.  



  <I>Beispiel:</I>  18;4 Teile     Benzidin    werden in der üblichen  Weise     tetrazotiert    und mit 34,1 Teilen     1,8-          Aminonaphtol-3,6-distiIfonsäure        (Mononatri-          Umsalz)    mineralsauer gekuppelt. Ist die Bil  dung des Zwischenproduktes beendet, so wird  es mit der     Diazoverbindung    aus 17,3 Teilen       Aminobenzolparasulfonsäure        sodaalkalisch    ver  einigt.

   Nach erfolgter     Kupplung    zum     Disazo-          farbstoff    lässt man eine     sodaalkalische    Lösung  von 36,1 Teilen     N-Acetyl-1,8-aniinonaphtol-          3;6-disulfonsäure    zufliessen. Die Kupplung er  folgt rasch und der Farbstoff wird durch Aus  salzen der angesäuerten Kupplungsflüssigkeit    ausgeschieden. Die nach der Filtration er  haltene saure     Farbstoffpaste    wird neutralisiert  und zur Trockne verdampft.  



  Der neue Farbstoff stellt ein grauschwarzes,  etwas bronzierendes, in Wasser mit tiefblauer  Farbe lösliches Pulver dar und färbt Leder  verschiedenster     Gerbungsart    in schönen 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 trisazo dye, and is characterized in that one molecule of tetrazobenzidine in acidic solution is combined with one molecule of 1,8-amirronaphthol-3,6-disulfonic acid,

   the intermediate is first coupled with a molecule of diazobenzenesulfonic acid in an alkaline solution and then combined with a molecule of N-acetyl-1,8-aminonaphthol-3,6 - disulfonic acid.



  <I> Example: </I> 18; 4 parts of benzidine are tetrazotized in the usual way and coupled with 34.1 parts of 1,8-aminonaphthol-3,6-distifonic acid (mononatrium salt) with mineral acid. When the formation of the intermediate product has ended, it is combined with the diazo compound of 17.3 parts of aminobenzeneparasulfonic acid in an alkaline soda form.

   After coupling to the disazo dye, a soda-alkaline solution of 36.1 parts of N-acetyl-1,8-aniinonaphthol-3; 6-disulfonic acid is allowed to flow in. The coupling he follows quickly and the dye is eliminated by salts from 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 colors leather of various types of tanning in beautiful blue tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines blauen Trisazofarbstoffes, dadurch gekennzeichnet, dass man ein Molekül Tetrazobenzidin in saurer Lösung mit einem Molekül 1,8-Amino- naphtol - 3,6 - disulfonsäure kombiniert, das Zwischenprodukt mit einem Molekül Diazo- benzolparastilfonsäure in alkalischer Lösung kuppelt und hierauf mit einem Molekül N- Acetyl -1,8 - aminonaphtol --3,6 - disulfonsäure vereinigt. PATENT CLAIM: Process for the preparation of a blue trisazo dye, characterized in that one molecule of tetrazobenzidine in acidic solution is combined with one molecule of 1,8-amino naphthol - 3,6 - disulfonic acid, and the intermediate product is coupled with a molecule of diazobenzeneparastilic acid in alkaline solution and then combined with a molecule of N-acetyl -1,8 - aminonaphtol --3,6 - disulfonic acid. Der neue Farbstoff stellt ein grauschwarzes, etwas bronzierendes, in Wasser mit tiefblauer Farbe lösliches Pulver dar und färbt Leder verschiedenster Gerbungsartin schönen blauen 'Cönen an. 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 blue shades.
CH198056D 1937-03-13 1937-03-13 Process for the preparation of a polyazo dye. CH198056A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH198056T 1937-03-13
US1170174XA 1955-09-14 1955-09-14

Publications (1)

Publication Number Publication Date
CH198056A true CH198056A (en) 1938-05-31

Family

ID=25723055

Family Applications (1)

Application Number Title Priority Date Filing Date
CH198056D CH198056A (en) 1937-03-13 1937-03-13 Process for the preparation of a polyazo dye.

Country Status (1)

Country Link
CH (1) CH198056A (en)

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