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CH210486A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH210486A
CH210486A CH210486DA CH210486A CH 210486 A CH210486 A CH 210486A CH 210486D A CH210486D A CH 210486DA CH 210486 A CH210486 A CH 210486A
Authority
CH
Switzerland
Prior art keywords
mol
dye
phenylenediamine
azo dye
acid
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH210486A publication Critical patent/CH210486A/en

Links

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
    • C09B35/37D is diarylamine

Landscapes

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

Description

  

  <B>Zusatzpatent</B> zum     Hauptpatent    Nr. 203950.    Verfahren zur Herstellung eines     Azofarbstoffes.            Gegenstand    des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines     Azo-          farbstoffes.    Das Verfahren ist dadurch ge  kennzeichnet, dass man 1     Mol        tetrazotierten    p  Aminobenzoyl-p-phenylendiamins mit einem  Gemisch von     Salicylsäure        und        o-Kresotin-          säure,    entsprechend 1     Mol,    und 1     Mol        2,

  8-          Amino-naphthol-6-suHonsäure    kuppelt, den  so gebildeten     Disazofarbstoff        diazotiert    und  mit 1     Mol    1,3     Phenylendiamin-4-sulfonsäure     vereinigt.  



  Der neue Farbstoff färbt Baumwolle in       braunen    Tönen. Die Färbung eignet sich  zur Nachbehandlung mit     diazotiertem        p-          Nitranilin.     



  <I>Beispiel:</I>  62,6 Teile des in bekannter Weise durch       Tetrazotieren    von 1     Mol        p-Aminobenzoyl-p-          phenylendiamin    und Kuppeln     mit        einem        Mol     eines Gemisches aus<B>80%</B>     Salicylsäure    und  20 %     o-Kresotinsäure    sowie 1     Mol        2,

  8-Amino-          naphthol-6-sulfonsäure    erhältlichen Farb-         stoffes    werden mit Wasser verrührt und mit  7 Teilen     Natriumnitrit    plus 30 Teilen Salz  säure     19,5'B6        diazotiert.    Nach     etwa    2     .Stun-          den    ist die     Nitritaufnahme    beendigt, und das       Diazotierungsgemisch    läuft zu     einer        mit    30  Teilen Soda versetzten Lösung von 19 Teilen       1,

  3-Phenylendiamin-4-sulfonsäure.    Der Farb  stoff ist nach seiner Fertigstellung aus  gefallen und kann direkt gepresst werden.  Der Farbstoff färbt Baumwolle in     braunen     Tönen. Diese Färbungen eignen sich beson  ders zur     Nachbehandlung    mit     diazotiertem          p-Nitranilin,    wobei     tief        gelbstichig        braune     Farbstoffe erhalten werden,     etwa    von der  Nuance des Farbstoffes des Beispiels 1 Ab  satz 1 der deutschen Patentschrift Nr. 235591,  die sich jedoch durch bessere     Ätzbarkeit    und  Lichtechtheit     auszeichnen.  



  <B> Additional patent </B> to main patent no. 203950. Process for the production of an azo dye. The present patent relates to a process for the production of an azo dye. The process is characterized in that 1 mol of tetrazotized p aminobenzoyl-p-phenylenediamine is mixed with a mixture of salicylic acid and o-cresotinic acid, corresponding to 1 mol, and 1 mol of 2,

  Coupling 8-amino-naphthol-6-sulfonic acid, diazotizing the disazo dye thus formed and combining it with 1 mol of 1,3 phenylenediamine-4-sulfonic acid.



  The new dye dyes cotton in brown tones. The coloring is suitable for post-treatment with diazotized p-nitroaniline.



  <I> Example: </I> 62.6 parts of in a known manner by tetrazotizing 1 mole of p-aminobenzoyl-p-phenylenediamine and coupling with a mole of a mixture of <B> 80% </B> salicylic acid and 20% o-cresotinic acid and 1 mole 2,

  8-amino-naphthol-6-sulfonic acid available dyes are stirred with water and diazotized with 7 parts of sodium nitrite plus 30 parts of hydrochloric acid 19,5'B6. After about 2 hours, the nitrite uptake is complete and the diazotization mixture runs into a solution of 19 parts 1 to which 30 parts of soda are added,

  3-phenylenediamine-4-sulfonic acid. The dye fell out after its completion and can be pressed directly. The dye dyes cotton in brown tones. These dyeings are particularly suitable for aftertreatment with diazotized p-nitroaniline, with deep yellowish brown dyes being obtained, for example from the shade of the dye of Example 1 from sentence 1 of German Patent No. 235591, which, however, are characterized by better etchability and lightfastness .

 

Claims (1)

PATENTANSPRUCIi: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man 1 Mol tetrazotierten p - Aminobenzoyl - p - phenylendiamins mit einem Gemisch von Salicylsäure und o-Kresotinsäure, entspre chend 1 ATol, und 1 Mol ?,8-Aminonaphthol- 6-sulfonsäure kuppelt, PATENT CLAIM: Process for the production of an azo dye, characterized in that 1 mol of tetrazotized p - aminobenzoyl - p - phenylenediamine is mixed with a mixture of salicylic acid and o-cresotinic acid, corresponding to 1 ATol, and 1 mol of?, 8-aminonaphthol- 6 -sulfonic acid couples, den so gebildeten Dis- azofarbstoff diazotiert und mit 1 Mol 1,3 Phenylendiamin-4-sulfonsäure vereinigt. Der neue Farbstoff färbt Baumwolle in braunen Tönen. Die Färbung eignet sich zur Nachbehandlung mit diazotiertem p- Nitranilin. the disazo dye thus formed is diazotized and combined with 1 mol of 1,3 phenylenediamine-4-sulfonic acid. The new dye dyes cotton in brown tones. The coloring is suitable for post-treatment with diazotized p-nitroaniline.
CH210486D 1937-01-14 1937-12-28 Process for the preparation of an azo dye. CH210486A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE210486X 1937-01-14
CH203950T 1937-12-28

Publications (1)

Publication Number Publication Date
CH210486A true CH210486A (en) 1940-07-15

Family

ID=25723986

Family Applications (1)

Application Number Title Priority Date Filing Date
CH210486D CH210486A (en) 1937-01-14 1937-12-28 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH210486A (en)

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