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CH267867A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH267867A
CH267867A CH267867DA CH267867A CH 267867 A CH267867 A CH 267867A CH 267867D A CH267867D A CH 267867DA CH 267867 A CH267867 A CH 267867A
Authority
CH
Switzerland
Prior art keywords
dye
azo dye
production
new azo
new
Prior art date
Application number
Other languages
German (de)
Inventor
Ag Sandoz
Original Assignee
Ag 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 Ag Sandoz filed Critical Ag Sandoz
Publication of CH267867A publication Critical patent/CH267867A/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

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 264602.    Verfahren zur Herstellung eines neuen     Azofarbstoffes.       Das vorliegende Patent betrifft ein Ver  fahren zur Herstellung eines neuen     Azofarb-          stoffes    und ist dadurch gekennzeichnet,     da.ss          inan    die     Zwischenverbindung    aus     4,4'-Tetrazo-          diphenyl    und 1 --Hol     Salicylsäure    mit dem     Di-          acetyidiaminoazofarbstoff,

      den man durch  saure Kupplung von     diazotiert.er        5-Acetyl-          amino-2-aminobenzol-l-suifonsäure    mit     2,8-          Aminonaphthol-6-stulfoilsätire    und nachfol  gende     Acetylierung    erhält, vereinigt und das  erhaltene Kupplungsprodukt zwecks Versei  fung der im     Naphthalinkern    sitzenden     Acetyl-          aminogruppe    mit     verseifenden    Mitteln behan  delt.  



  <I>Beispiel:</I>  18,4 Teile     Benzidin    werden in bekannter       Weise        tetrazotiert    und mit 13,8 Teilen     Salicyl-          säure    in alkalischer Lösung zur Zwischenver  bindung     vereinigt.    Zu der     orangebraunen    Sus  pension derselben lässt man in Gegenwart von  20 Teilen     calc.    Soda die wässerige Lösung von  52 Teilen des     Monoazofarbstoffes,

      den man  durch Vereinigung von     diazotierter        5-Acetyl-          amino    - 2 -     aminobenzol    -1-     sulfonsäure    mit 2,8  Aminonaphthol-6-sulfonsäure in saurem Me  dium und nachfolgende     Acetylierung    erhält,  bei 5 bis 100 zufliessen. Der entstellende Farb  stoff geht mit     violettbrauner    Farbe in Lösung.    Nach beendeter     Kupplung    wird     ausgesalzen,     filtriert und getrocknet.

   Der so erhaltene     Tris-          azofarbstoff,    ein dunkles Pulver, färbt Baum  wolle in lichtechten     violettbraunen    Tönen.  



  Durch Verseifen in 10     o/oiger        Sodalösung     bei<B>900</B> erhält man den entsprechenden     Amino-          azofarbstoff,    der Baumwolle in     gelbstichig     braunen, sehweiss- und säureechten Nuancen  von guter     Liehtechtheit    färbt.



  <B> Additional patent </B> to main patent No. 264602. Process for the production of a new azo dye. The present patent relates to a process for the production of a new azo dye and is characterized in that the intermediate compound of 4,4'-tetrazodiphenyl and 1 -hol salicylic acid with the diacetyidiaminoazo dye,

      which is obtained by acid coupling of diazotiert.er 5-acetyl-amino-2-aminobenzene-l-suifonic acid with 2,8-aminonaphthol-6-stulfoilsätire and subsequent acetylation, and the coupling product obtained is combined for the purpose of hydrolysis of those in the naphthalene core Acetyl amino group treated with saponifying agents.



  <I> Example: </I> 18.4 parts of benzidine are tetrazotized in a known manner and combined with 13.8 parts of salicylic acid in an alkaline solution to form the intermediate compound. To the orange-brown Sus pension the same can be calc in the presence of 20 parts. Soda the aqueous solution of 52 parts of the monoazo dye,

      which is obtained by combining diazotized 5-acetylamino-2-aminobenzene-1-sulfonic acid with 2.8 aminonaphthol-6-sulfonic acid in acidic Me and subsequent acetylation, at 5 to 100 flow. The disfiguring dye goes into solution with a purple-brown color. After the coupling has ended, it is salted out, filtered and dried.

   The tris azo dye thus obtained, a dark powder, dyes cotton in lightfast violet-brown shades.



  By saponifying in 10% soda solution at <B> 900 </B> the corresponding amino azo dye is obtained, which dyes cotton in yellowish brown, whitish-white and acid-fast shades of good lightfastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Azofarbstoffes, dadurch gekennzeichnet, dass man die Zwischenverbindung aus 4,4'-Tetrazo- diphenyl und 1 Mol Salicylsäure mit dem Di- acetyldiaminoazofarbstoff, den man durch saure Kupplung von diazotierter 5-Acetyl- amiilo-2-aminobenzol-l-sulfonsäure mit 2,8- Amilionaphthol - 6 - sulfonsäure und nachfol gende Acetylierung erhält, PATENT CLAIM: Process for the preparation of a new azo dye, characterized in that the intermediate compound of 4,4'-tetrazodiphenyl and 1 mole of salicylic acid with the di-acetyldiaminoazo dye, which is obtained by acidic coupling of diazotized 5-acetyl-amiilo-2- aminobenzene-l-sulfonic acid with 2,8-amilionaphthol - 6 - sulfonic acid and subsequent acetylation, vereinigt und das erhaltene Kupplungsprodukt zwecks Versei fung der im Naphthalinkern sitzenden Acetyl- aminogruppe mit verseifenden Mitteln behan delt. Der neue Farbstoff, ein schwarzes Pulver, färbt Baumwolle in gelbstichig braunen Tö nen von guter Licht-, Schweiss- und Säureecht heit. combined and the coupling product obtained for the purpose of saponifying the acetylamino group in the naphthalene nucleus treated with saponifying agents. The new dye, a black powder, dyes cotton in yellowish brown tones that are fast to light, perspiration and acids.
CH267867D 1947-01-17 1947-01-17 Process for the production of a new azo dye. CH267867A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH267869T 1947-01-17
CH267867T 1947-01-17
CH264602T 1947-01-17

Publications (1)

Publication Number Publication Date
CH267867A true CH267867A (en) 1950-04-15

Family

ID=27178089

Family Applications (1)

Application Number Title Priority Date Filing Date
CH267867D CH267867A (en) 1947-01-17 1947-01-17 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH267867A (en)

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