CH294245A - Process for the preparation of a trisazo dye. - Google Patents

Process for the preparation of a trisazo dye.

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Publication number
CH294245A
CH294245A CH294245DA CH294245A CH 294245 A CH294245 A CH 294245A CH 294245D A CH294245D A CH 294245DA CH 294245 A CH294245 A CH 294245A
Authority
CH
Switzerland
Prior art keywords
trisazo dye
amino
parts
oxy
methyl
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 CH294245A publication Critical patent/CH294245A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B35/00Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/36Trisazo dyes of the type
    • C09B35/366D is diphenyl

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

Description

  

      'lnsatzpatent    zum Hauptpatent Nr. 291811.    Verfahren     zur    Herstellung     eines        Trisazofarbstoffes.            Gegenstand    vorliegenden Patentes ist.

   ein  Verfahren zur Herstellung eines     Trisazofarb-          stoffes.    Das Verfahren ist dadurch gekenn  zeichnet, dass man die     Diazoverbindung    von     2-          Methy    1-4- (3"-     methyl-4"-amino-phenyl)    -4'-     oxy-          3'-carboxy-1,1'-azobenzol    mit 2     --        ("        -Amino-          ben7oylamino    )- 5     -oxy-naphthalin-7-sulfonsäure     kuppelt,

   den gebildeten     Aminodisazofarbstoff          weiterdiazotiert    und mit 1     Mol        1,3=Dioxy-ben-          zol    vereinigt.  



  Der erhaltene nette     Trisazofarbstoff    stellt  ein braunes Pulver dar, das sieh in Wasser  mit roter und in konzentrierter Schwefel  säure mit blauer Farbe löst und     Cellulose-          fasern    in     blaustiebig    roten Tönen färbt.

           Beispiel:     21,2 Teile     3,3'-Dimethyl-4,4'-diamino-di-          phenyl    werden bei 0  in einer Lösung von    58 Teilen Salzsäure 30 % und 180 Teilen Was  ser mit 13,8 Teilen     Natriumnitrit        tetrazotiert.     Die     Tetrazolösung    wird zuerst     sodaalkalisch     mit 14,3 Teilen     2-Oxy-benzol.-1-carbonsäure     und dann in     bicarbonatalkalischer    Lösung mit  35,8 Teilen     2-(3'-Amino-benzoylamino)-5-oxy-          naphthalin-7-sulfonsäure    bei 40  gekuppelt.

    Der fertig gebildete     Disazofarbstoff    wird ab  filtriert und in 1000 Teilen Nasser mit 1;6  Teilen Natronlauge 100      6    suspendiert. Man  versetzt mit. 7,6 Teilen     Natriumnitrit    und       diazotiert    bei 10  durch Zustürzen von 48 Tei  len 30 %     iger    Salzsäure. Nach 6 Stunden lässt  man die Suspension zu einer     sodaalkalischen     Lösung von 11,0 Teilen     1,3-Dioxy-benzol    zu  fliessen. Die Kupplung ist rasch beendet. Man  scheidet den     Trisazofarbstoff    mit Kochsalz ab,  filtriert und trocknet. Er hat die Formel.

    
EMI0001.0047     
    und ist ein braunes Pulver, das sich in Wasser  mit roter und in konzentrierter Schwefelsäure  mit blauer Farbe löst..     Cellulosefasern    werden  in blaustichig roten Tönen angefärbt, die     be-          son < lcrs        wa.ssercelit    und gut     ä.tzbar    sind.



      Insertion patent for main patent no. 291811. Process for the production of a trisazo dye. Subject of the present patent is.

   a process for the production of a trisazo dye. The process is characterized in that the diazo compound of 2-methy 1-4- (3 "-methyl-4" -amino-phenyl) -4'-oxy-3'-carboxy-1,1'-azobenzene with 2 - ("-Aminoben7oylamino) -5 -oxy-naphthalene-7-sulfonic acid couples,

   the aminodisazo dye formed is further diazotized and combined with 1 mol of 1,3 = dioxybenzene.



  The nice trisazo dye obtained is a brown powder which dissolves in water with red and in concentrated sulfuric acid with a blue color and dyes cellulose fibers in bluish red tones.

           Example: 21.2 parts of 3,3'-dimethyl-4,4'-diamino-diphenyl are tetrazotized at 0 in a solution of 58 parts of 30% hydrochloric acid and 180 parts of water with 13.8 parts of sodium nitrite. The tetrazo solution is first alkaline with 14.3 parts of 2-oxy-benzene-1-carboxylic acid and then in an alkaline bicarbonate solution with 35.8 parts of 2- (3'-amino-benzoylamino) -5-oxynaphthalene-7-sulfonic acid coupled at 40.

    The completely formed disazo dye is filtered off and suspended in 1000 parts of water with 1.6 parts of 100% sodium hydroxide solution. One adds. 7.6 parts of sodium nitrite and diazotized at 10 by tumbling 48 parts of 30% hydrochloric acid. After 6 hours, the suspension is allowed to flow into a soda-alkaline solution of 11.0 parts of 1,3-dioxy-benzene. The coupling ends quickly. The trisazo dye is separated off with common salt, filtered and dried. He has the formula.

    
EMI0001.0047
    and is a brown powder that dissolves in water with red and in concentrated sulfuric acid with blue color. Cellulose fibers are dyed in bluish red tones, which are particularly water-soluble and easily etchable.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Trisazo- farbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung von 2-Methyl-4-(3"-me- thyl - 4"- amino-pheny l) -4'- oxy-3'-ea rboxy-1,1'- azobenzol mit 2-(3'-Amino-benzoylamino)-5- oxy-na.phtha.lin-7-sulfonsäure kuppelt, den ge bildeten Aminodisazofarbstoff weiterdiazotiert und mit 1 Mol. 1, Claim: Process for the production of a trisazo dye, characterized in that the diazo compound of 2-methyl-4- (3 "-methyl - 4" -amino-pheny l) -4'-oxy-3'-ea rboxy-1,1'-azobenzene with 2- (3'-amino-benzoylamino) -5-oxy-na.phtha.lin-7-sulfonic acid couples, further diazotized the formed amino disazo and with 1 mol. 1, 3-Dioxy-benzol vereinigt. Der erhaltene neue Trisazofarbstoff stellt ein braunes Pulver dar, das sich in Wasser mit roter und in konzentrierter Schwefelsäure mit blauer Farbe löst und Cellulosefasern in blaustichig roten Tönen färbt. 3-Dioxy-benzene combined. The new trisazo dye obtained is a brown powder that dissolves in water with red and in concentrated sulfuric acid with blue color and dyes cellulose fibers in bluish red tones.
CH294245D 1950-12-15 1950-12-15 Process for the preparation of a trisazo dye. CH294245A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH294245T 1950-12-15
CH291811T 1954-07-09

Publications (1)

Publication Number Publication Date
CH294245A true CH294245A (en) 1953-10-31

Family

ID=25733151

Family Applications (1)

Application Number Title Priority Date Filing Date
CH294245D CH294245A (en) 1950-12-15 1950-12-15 Process for the preparation of a trisazo dye.

Country Status (1)

Country Link
CH (1) CH294245A (en)

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