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CH267868A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH267868A
CH267868A CH267868DA CH267868A CH 267868 A CH267868 A CH 267868A CH 267868D A CH267868D A CH 267868DA CH 267868 A CH267868 A CH 267868A
Authority
CH
Switzerland
Prior art keywords
dye
azo dye
production
new azo
sulfonic acid
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 CH267868A publication Critical patent/CH267868A/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
    • C09B35/467—D being derived from diaminodiaryl linked through CON<, SO2N<, CSN<

Landscapes

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

Description

  

      Zusatzpatent    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, dass  man die Zwischenverbindung aus     4,4'-Tetrazo-          benzanilid    und 1     Mol        Salicylsäure    mit dem       Diacetyldiaminoazofarbstoff,    den man durch  saure Kupplung von dianotierter     5-Acetyl-          amino-2-aminobenzol-l-sulfonsäure    mit     2,

  8-          Aminonaphthol    - 6 -     sulfonsäure    und nachfol  gende     Acetylierung    erhält,     vereinigt    und das  erhaltene Kupplungsprodukt zwecks Versei  fung der im     Naphthalinkern    sitzenden     Ace-          tylaminogruppe    mit verseifenden Mitteln be  handelt.  



  <I>Beispiel:</I>  22,7 Teile     4,4'-Diaminobenzanilid    werden  in bekannter Weise     tetrazotiert    und mit 13,8  Teilen     Salicylsäure    in alkalischer Lösung zur  Zwischenverbindung vereinigt. Zu der orange  braunen     Suspension    derselben.

   lässt, man in  Gegenwart von 20 Teilen     cale.    Soda die wäs  serige Lösung von 52 Teilen des     Monoazofarb-          stoffes,    den man durch Vereinigung von di  anotierter     5-Acetylamino-2-aminobenzol-l-sul-          fonsäure    mit     2,8-Aminonaphthol-6-sulfonsäure     in saurem Medium und nachfolgende     Acetylie-          rung    erhält, bei 5 bis 100 zufliessen. Der ent  standene Farbstoff geht mit     violettbrauner     Farbe in Lösung. Nach beendeter Kupplung    wird     ausgesalzen,    filtriert und getrocknet.

   Der  so erhaltene     Trisazofarbstoff,    ein dunkles Pul  ver, färbt Baumwolle in lichtechten violett  braunen Tönen.  



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



      Additional patent 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'-tetrazo benzanilide and 1 mole of salicylic acid with the diacetyldiaminoazo dye, which is obtained by acidic coupling of dianotated 5-acetyl - amino-2-aminobenzene-l-sulfonic acid with 2,

  8-aminonaphthol-6-sulfonic acid and subsequent acetylation is obtained, combined and the coupling product obtained is treated with saponifying agents for the purpose of saponifying the acetylamino group located in the naphthalene nucleus.



  <I> Example: </I> 22.7 parts of 4,4'-diaminobenzanilide are tetrazotized in a known manner and combined with 13.8 parts of salicylic acid in alkaline solution to form the intermediate compound. To the orange-brown suspension of the same.

   lets, in the presence of 20 parts of cale. Soda is the aqueous solution of 52 parts of the monoazo dye, which is obtained by combining di anotized 5-acetylamino-2-aminobenzene-1-sulphonic acid with 2,8-aminonaphthol-6-sulphonic acid in an acidic medium and subsequent acetylic acid tion receives, inflow at 5 to 100. The resulting dye goes into solution with a violet-brown color. After the coupling has ended, it is salted out, filtered and dried.

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



  Saponification in 10% soda solution at <B> 900 </B> gives the corresponding amino azo dye, which dyes cotton in yellowish brown, sweat- 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- benzanilid und 1 Mol Salicylsäure mit dem Diacetyldiaminoazofarbstoff, den man durch saure Kupplung von dianotierter 5-Acetyl- amino - 2 - aminobenzol -1- sulfonsäure mit 2,8 Aminonaphthol - 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'-tetrazo benzanilide and 1 mole of salicylic acid with the diacetyldiaminoazo dye, which is obtained by acidic coupling of dianotated 5-acetylamino - 2 - aminobenzene - 1- sulfonic acid with 2.8 aminonaphthol - 6 - sulfonic acid and subsequent acetylation, vereinigt und das erhaltene Kupplungsprodukt zwecks Versei fung der im Naphthalinkern sitzenden Aeetyl- aminogruppe mit verseifenden Mitteln behan delt. Der neue Farbstoff, ein schwarzes Pulver, färbt Baumwolle in gelbstiehig braunen Tö nen von guter Licht-, Schweiss- und Säure echtheit. combined and the coupling product obtained treated with saponifying agents for the purpose of saponifying the aetyl amino group in the naphthalene nucleus. The new dye, a black powder, dyes cotton in yellowish brown tones with good fastness to light, perspiration and acids.
CH267868D 1947-01-17 1947-01-17 Process for the production of a new azo dye. CH267868A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH267869T 1947-01-17
CH267868T 1947-01-17
CH264602T 1947-01-17

Publications (1)

Publication Number Publication Date
CH267868A true CH267868A (en) 1950-04-15

Family

ID=27178090

Family Applications (1)

Application Number Title Priority Date Filing Date
CH267868D CH267868A (en) 1947-01-17 1947-01-17 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH267868A (en)

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