CH300791A - Process for the preparation of a disazo dye. - Google Patents

Process for the preparation of a disazo dye.

Info

Publication number
CH300791A
CH300791A CH300791DA CH300791A CH 300791 A CH300791 A CH 300791A CH 300791D A CH300791D A CH 300791DA CH 300791 A CH300791 A CH 300791A
Authority
CH
Switzerland
Prior art keywords
dye
parts
preparation
disazo dye
water
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Ciba
Original Assignee
Ciba 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 Ciba Geigy filed Critical Ciba Geigy
Publication of CH300791A publication Critical patent/CH300791A/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
    • C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
    • C09B31/02—Disazo dyes
    • C09B31/12—Disazo dyes from other coupling components "C"
    • C09B31/14—Heterocyclic components

Landscapes

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr.     298@509.       Verfahren zur     Herstellung    eines     Disazofarbstoffes.       Es wurde gefunden, dass man zu     einem          wertwollen        Disazofarbstoff    gelangt, wenn man  
EMI0001.0008     
    mit     8-Oxychinolin    kuppelt.  



  Der neue Farbstoff bildet     ein,    dunkel  braunes Pulver, das sich in Wasser mit roter  Farbe löst und     Baumwolle    nach dem     ein-          oder        zweibadigen        Nachkupferungsverfahren     in lichtechten,     gelbstichig    roten Tönen färbt.  



  Den     Aminomonoazofarbstoff    der obigen  Formel erhält man durch Kupplung von       diazotiertem        2-Amino    -1-     oxybenzol-4-carbon-          säureamid    mit     2-(4'-Aminobenzoyl)-amino-5-          oxynaphthalin-7-sulfonsäure.    Die     Kupplung     der     Diazoverbindung    dieses     Aminoazofarb-          stoffes    mit dem     8-Oxychinolin    erfolgt vorteil  haft in     alkalischem    Medium.  



       Beispiel:     <B>1512</B> Teile     1-Oxy=2-amino'benzo14-carbon-          säureamid    werden in üblicher Weise mit     iSalz-          säure    und,     Natriumnztrit    in die     Diazoverbin-          dung    übergeführt.

       Diese    wird mit der Lö  sung von 35,8 Teilen     2,(4'Amino!benzoyl)-          amin.o-5-oxynaphthalin-7-sulfonsäure    und 30    eine     Dazoverbindung    des     Aminomonoazofarb-          stoffes    der Formel    Teilen     Natriumcarbonat    in 500 Teilen Wasser  vereinigt.  



  Der mit     Natriumchlorid        a!fgeschiedene,     filtrierte und     abgepresste        Aminomonoazofarb-          stoff    wird in 400 'Teilen     Wasser    mit Salz  säure und     Natriumnitrit    in bekannter Weise       diazotiert.    Die erhaltene     Diazoverbindung    ver  setzt man nun mit einer Lösung aus 14,

  5 'Tei  len     8-Oxychinolin    und     1'2    Teilen     310prozenti-          ger    Salzsäure in 50 Teilen     Wasser.    Anschlie  ssend gibt man 50 Teile     30prozentige        Na-          triumhydroxydIösung    dazu und     rührt,    einige       Otunden,        erwärmt    dann auf 6'5 , fügt  100 Teile     Natriumchlorid    zu, um     eine    gut     fil-          trier'bare    Form zu erhalten,

       filtriert    und trock  net den Niederschlag.



      Additional patent to main patent No. 298 @ 509. Process for the preparation of a disazo dye. It has been found that a valuable disazo dye can be obtained by
EMI0001.0008
    couples with 8-oxyquinoline.



  The new dye forms a dark brown powder that dissolves in water with a red color and colors cotton in lightfast, yellowish red tones using the one or two-bath copper plating process.



  The amino monoazo dye of the above formula is obtained by coupling diazotized 2-amino-1-oxybenzene-4-carboxylic acid amide with 2- (4'-aminobenzoyl) -amino-5-oxynaphthalene-7-sulfonic acid. The coupling of the diazo compound of this aminoazo dye with the 8-oxyquinoline is advantageously carried out in an alkaline medium.



       Example: Parts of 1-oxy = 2-amino'benzo14-carboxylic acid amide are converted into the diazo compound in the usual way with hydrochloric acid and sodium chloride.

       This is combined with the solution of 35.8 parts of 2, (4'Amino! Benzoyl) - amin.o-5-oxynaphthalene-7-sulfonic acid and a dazo compound of the aminomonoazo dye of the formula parts of sodium carbonate in 500 parts of water.



  The aminomonoazo dye separated with sodium chloride, filtered and pressed off is diazotized in 400 parts of water with hydrochloric acid and sodium nitrite in a known manner. The obtained diazo compound is now set with a solution of 14,

  5 parts of 8-oxyquinoline and 12 parts of 310 percent hydrochloric acid in 50 parts of water. Then 50 parts of 30 percent sodium hydroxide solution are added and the mixture is stirred for a few hours, then heated to 6.5, 100 parts of sodium chloride are added in order to obtain a form that can be easily filtered.

       filtered and dry net the precipitate.

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung eines Disazo- farbstoffes, dadurch gekennzeichnet, dass man eine Diazoverbindung des: PATENT CLAIM Process for the production of a disazo dye, characterized in that a diazo compound of: Aminomono- azofarbstoffes der Formel EMI0002.0001 mit. S-Oxyehinolin kuppelt. Der neue Farbstoff bildet ein dunkel braunes Pulver, das sich in Wasser mit roter Farbe löst und Baumwolle nach, dem ein- oder zweibadigen Nachkupfierungsverfahren in lichtechten, gelbstichig roten Tönen färbt. Amino mono azo dye of the formula EMI0002.0001 With. S-oxyehinoline couples. The new dye forms a dark brown powder that dissolves in water with a red color and colors cotton in lightfast, yellowish red tones after the one- or two-bath replenishment process. UNTERANSPRUCH Verfahren gemäss Patentanspruch, dadurch gekennzeichnet, dass man die Kupplung in alkalischem Medium durchführt. SUB-CLAIM Process according to claim, characterized in that the coupling is carried out in an alkaline medium.
CH300791D 1952-01-25 1952-01-25 Process for the preparation of a disazo dye. CH300791A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH300791T 1952-01-25
CH298509T 1952-01-25

Publications (1)

Publication Number Publication Date
CH300791A true CH300791A (en) 1954-08-15

Family

ID=25733961

Family Applications (1)

Application Number Title Priority Date Filing Date
CH300791D CH300791A (en) 1952-01-25 1952-01-25 Process for the preparation of a disazo dye.

Country Status (1)

Country Link
CH (1) CH300791A (en)

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