CH249550A - Process for the preparation of a polyazo dye. - Google Patents

Process for the preparation of a polyazo dye.

Info

Publication number
CH249550A
CH249550A CH249550DA CH249550A CH 249550 A CH249550 A CH 249550A CH 249550D A CH249550D A CH 249550DA CH 249550 A CH249550 A CH 249550A
Authority
CH
Switzerland
Prior art keywords
amino
dye
benzene
brown
mol
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 CH249550A publication Critical patent/CH249550A/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
    • C09B35/40—Trisazo dyes ot the type the component K being a dihydroxy or polyhydroxy compound

Landscapes

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

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 244602.    Verfahren zur Herstellung eines     Polyazofarbstoffes.       Gegenstand vorliegenden Patentes ist ein  Verfahren zur Herstellung eines     Polyazo-          farbstoffes.    Das Verfahren ist dadurch ge  kennzeichnet, dass man     tetrazotiertes        1-(4'-          Amino-benzoylamino)

  -4-amino-benzol    einer  seits mit 1     Mol    des     Monoazofarbstoffes    aus       diazotierter        2-Amino-l-oxy-benzol-4-sulfon-          säure    und     Resorcin    und anderseits mit 1     Mol          3-Methyl-5-pyrazolon        kuppelt.    Der entstan  dene neue     Trisazofarbstoff    stellt ein dunkles  Pulver dar,

   löst sich in Wasser mit brauner  und in     konzentrierter    Schwefelsäure mit  gelbbrauner Farbe und färbt Fasern aus na  türlicher oder     regenerierter        Cellulose    in gelb  stichig braunen Tönen, welche nach Behand  lung mit Kupferverbindungen nach einer der  üblichen Methoden sehr gute     Echtheiten    auf  weisen.  



       Beispiel:     22,7 Teile     1-(4'-Amino-benzoylamino)-4-          a.mino-benzol    werden wie üblich mit 13,8  Teilen     Natriumnitrit        tetrazotiert    und in  schwach essigsaurer Lösung mit einer lack  mussauren wässerigen Lösung von 31 Teilen  des     Monoazofarbstoffes    aus     diazotierter          2-Amino-l-oxy-benzol-4-sulfonsäure    und     Re-          sorcin    gekuppelt. Nach mehreren Stunden    ist die     Bildung    des Zwischenproduktes been  det.

   Man versetzt erst mit einer neutralen       Lösung    von 9,8 Teilen     3-Methyl-5-pyrazolon     und anschliessend allmählich mit 10 Teilen       Natriumbicarbonat    in 200 Teilen Wasser.  Wenn die Kupplung beendet ist,     wird    der  fertig     gebildete        Trisazofarbstoff        abfiltriert     und getrocknet.



  <B> Additional patent </B> to main patent no. 244602. Process for the production of a polyazo dye. The present patent relates to a process for the production of a polyazo dye. The process is characterized in that tetrazotized 1- (4'-amino-benzoylamino)

  -4-amino-benzene on the one hand with 1 mol of the monoazo dye from diazotized 2-amino-1-oxy-benzene-4-sulfonic acid and resorcinol and on the other hand with 1 mol of 3-methyl-5-pyrazolone. The resulting new trisazo dye is a dark powder,

   dissolves in water with brown and in concentrated sulfuric acid with a yellowish brown color and dyes fibers made of natural or regenerated cellulose in yellowish brown shades which, after treatment with copper compounds by one of the customary methods, have very good fastness properties.



       Example: 22.7 parts of 1- (4'-amino-benzoylamino) -4- a.mino-benzene are tetrazotized as usual with 13.8 parts of sodium nitrite and in weakly acetic acid solution with a lacquer acidic aqueous solution of 31 parts of the monoazo dye Coupled from diazotized 2-amino-1-oxy-benzene-4-sulfonic acid and resorcinol. The formation of the intermediate product has ended after several hours.

   A neutral solution of 9.8 parts of 3-methyl-5-pyrazolone is added first and then gradually 10 parts of sodium bicarbonate in 200 parts of water are added. When the coupling has ended, the trisazo dye that has formed is filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Poly- azofarbstoffes, dadurch gekennzeichnet, dass man tetrazotiertes 1- (4'- Amino - benzoyl- amino) PATENT CLAIM: Process for the production of a poly azo dye, characterized in that tetrazotized 1- (4'-amino-benzoyl-amino) -4-amino-benzol einerseits mit 1 Mol des Monoazofarbstoffes aus diazotierter 2-Amino-l-oxy-benzol-4-sulfonsäure und Re- sorcin und anderseits mit 1 Mol 3-Methyl-5- pyrazolon kuppelt. -4-amino-benzene on the one hand with 1 mol of the monoazo dye from diazotized 2-amino-1-oxy-benzene-4-sulfonic acid and resorcin and on the other hand with 1 mol of 3-methyl-5-pyrazolone. Der entstandene neue Trisazofarbstoff stellt ein dunkles Pulver dar, löst sich in Wasser mit brauner und in konzentrierter Schwefelsäure mit gelbbrauner Farbe und färbt Fasern aus natürlicher oder regenerierter Cellulose in gelbstichig braunen Tönen, welche nach Behandlung mit Kupfer verbindungen nach einer der üblichen Metho-, den sehr gute Echtheiten aufweisen. The resulting new trisazo dye is a dark powder, dissolves in water with brown and in concentrated sulfuric acid with a yellow-brown color and dyes fibers made of natural or regenerated cellulose in yellow-tinged brown tones, which after treatment with copper compounds according to one of the usual methods have very good fastness properties.
CH249550D 1945-05-16 1945-05-16 Process for the preparation of a polyazo dye. CH249550A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH249550T 1945-05-16
CH244602T 1945-05-16

Publications (1)

Publication Number Publication Date
CH249550A true CH249550A (en) 1947-06-30

Family

ID=25728956

Family Applications (1)

Application Number Title Priority Date Filing Date
CH249550D CH249550A (en) 1945-05-16 1945-05-16 Process for the preparation of a polyazo dye.

Country Status (1)

Country Link
CH (1) CH249550A (en)

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