CH198055A - Process for the preparation of a polyazo dye. - Google Patents

Process for the preparation of a polyazo dye.

Info

Publication number
CH198055A
CH198055A CH198055DA CH198055A CH 198055 A CH198055 A CH 198055A CH 198055D A CH198055D A CH 198055DA CH 198055 A CH198055 A CH 198055A
Authority
CH
Switzerland
Prior art keywords
molecule
preparation
dye
combined
disulfonic 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 CH198055A publication Critical patent/CH198055A/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     Trisazo-          farbstoffes    und ist dadurch gekennzeichnet,  dass man ein Molekül     Tetrazobenzidin    in sau  rer Lösung mit einem Molekül     1,8-Amiuo-          naphtol-3;

  6-disulfonsäure    kombiniert, das Zwi  schenprodukt zuerst mit einem Molekül     Di-          azobenzol    in alkalischer Lösung kuppelt und  hierauf mit einem Molekül     N-Acetyl--1,8-          aminonaphtol-3,6-äisulfonsäure    vereinigt.  



  <I>Beispiel:</I>  18,4 Teile     Benzidin    werden ,in der übli  chen Weise     tetrazotiert    und mit 34,1 Teilen       1,8-Aminonaphtol-3,6-disulfonsäure        (Monona-          triumsalz)    mineralsauer gekuppelt. Ist die  Bildung des Zwischenproduktes     beendet,    so  wird es mit einer     Diazobenzollösung    aus 9,3  Teilen Anilin     sodaalkalisch    vereinigt.

   Nach  dem Verschwinden des     Diazobenzols    lässt  man eine     sodaalkalische    Lösung von 36,1  Teilen     N-Acetyl-1,8-aminonaphtol-3,6-disul-          fonsäure    zufliessen. Die Kupplung erfolgt rasch  und der     Farbstoff    wird durch     Aussalzen    der  neutralisierten Kupplungsflüssigkeit ausge  schieden.    Der neue Farbstoff stellt nach dem Trock  nen ein grauschwarzes, etwas bronzierendes,  in Wasser mit tiefblauer Farbe lösliches Pul  ver dar und färbt Leder verschiedenster Ger  bungsart 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 process for the preparation of a blue Trisazo dye and is characterized in that one molecule of tetrazobenzidine in acidic solution with one molecule of 1,8-Amiuonaphtol-3;

  6-disulfonic acid combined, the intermediate product first couples with a molecule of diazobenzene in an alkaline solution and then combined with a molecule of N-acetyl-1,8-aminonaphthol-3,6-aisulfonic 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-disulfonic acid (mononatrium salt) in mineral acid form. When the formation of the intermediate product has ended, it is combined with a diazobenzene solution of 9.3 parts of aniline in a soda-alkaline manner.

   After the diazobenzene has disappeared, an alkaline soda solution of 36.1 parts of N-acetyl-1,8-aminonaphthol-3,6-disulfonic acid is allowed to flow in. The coupling takes place quickly and the dye is separated out by salting out the neutralized coupling fluid. After drying, the new dye is a gray-black, somewhat bronzing powder that dissolves in water with a deep blue color and colors leather in a wide variety of tannins in beautiful blue tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines blauen Trisazofarbstoffes, dadurch gekennzeichnet, dass man ein Molekül Tetrazobenzidin in sau rer Lösung mit einem Molekül 1,8-Amino- naphtol=3,6-disulfonsäure kombiniert, das Zwi schenprodukt zuerst mit einem Molekül Di- azobenzol 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, the intermediate product first with a molecule of diazobenzene in alkaline solution and then combined with a molecule of N-acetyl-1,8-aminonaphthol-3,6-disulfonic acid. Der neue Farbstoff stellt nach dem Trock nen ein grauschwarzes, etwas bronzierendes, in Wasser mit tiefblauer Farbe lösliches Pul ver dar und färbt Leder verschiedenster Ger bungsart in schönen blauen Tönen an. After drying, the new dye is a gray-black, somewhat bronzing powder that dissolves in water with a deep blue color and colors leather in a wide variety of tannins in beautiful blue tones.
CH198055D 1937-03-13 1937-03-13 Process for the preparation of a polyazo dye. CH198055A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH198055T 1937-03-13
US1170174XA 1955-09-14 1955-09-14

Publications (1)

Publication Number Publication Date
CH198055A true CH198055A (en) 1938-05-31

Family

ID=25723054

Family Applications (1)

Application Number Title Priority Date Filing Date
CH198055D CH198055A (en) 1937-03-13 1937-03-13 Process for the preparation of a polyazo dye.

Country Status (1)

Country Link
CH (1) CH198055A (en)

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