CH204144A - Process for the preparation of a water-soluble disazo dye. - Google Patents

Process for the preparation of a water-soluble disazo dye.

Info

Publication number
CH204144A
CH204144A CH204144DA CH204144A CH 204144 A CH204144 A CH 204144A CH 204144D A CH204144D A CH 204144DA CH 204144 A CH204144 A CH 204144A
Authority
CH
Switzerland
Prior art keywords
water
preparation
disazo dye
soluble disazo
dye
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 CH204144A publication Critical patent/CH204144A/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
    • C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
    • C09B33/02—Disazo dyes
    • C09B33/04—Disazo dyes in which the coupling component is a dihydroxy or polyhydroxy compound

Landscapes

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr.<B>200675.</B>    Verfahren zur Herstellung eines wasserlöslichen     Disazofarbstoües.            Gegenstand    des vorliegenden Zusatzpaten  tes ist ein Verfahren zur Herstellung eines       wasserlöslichen        Disazofarbstoffes,    welches  dadurch     gekennzeichnet    ist, dass man 1,

  3  Diogybenzol mit 1     Mol.        diazotierter        4-Amino-          benzol    - 1 -     methyltaurin    - 2 -     sulfonsäure    und  1     Mol.        diazotierter        1-Aminobenzol-4-sulfon-          säure    vereinigt.  



  <I>Beispiel:</I>  Die aus 31,2     Gewichtsteilen        4-Aminoben-          zol-l-methyltaurin-2-sulfonsäure    (M. G. 312)  von der folgenden Formel:  
EMI0001.0020     
    in der üblichen     Weise    hergestellte wässerige  Lösung der     Diazoverbindung    fliesst bei 0   C  unter Rühren in eine wässerige Lösung von  11     Gewichtsteilen        1,3-Dioxybenzol    (M.

   G.110)  in Gegenwart von     Natriumcarbonat.    Nach be  endeter     Kupplung    fliesst zu dem gebildeten  Farbstoff allmählich eine aus 17,3 Gewichts-    teilen     1-Aminobenzol-4-sulfonsäure    erhaltene       Diazosuspension.    In     sodaalkalischem.    Medium  ist die Bildung des     Disazofarbstoffes    sehr  rasch     beendet.    Der Farbstoff     wird        ausgesal-          zen,    isoliert und     getrocknet.     



  Er stellt     ein    braunes Pulver dar, das sich  in Wasser mit rötlich hellbrauner Farbe löst  und Leder in gelbbraunen Tönen gut ein  färbt.



      Additional patent to main patent no. <B> 200675. </B> Process for the production of a water-soluble disazo dye. The subject of the present additional patent is a process for the production of a water-soluble disazo dye, which is characterized in that 1,

  3 Diogybenzene combined with 1 mole of diazotized 4-aminobenzene-1-methyltaurine-2-sulfonic acid and 1 mole of diazotized 1-aminobenzene-4-sulfonic acid.



  <I> Example: </I> The compound obtained from 31.2 parts by weight of 4-aminobenzene-1-methyltaurine-2-sulfonic acid (M.G. 312) of the following formula:
EMI0001.0020
    Aqueous solution of the diazo compound prepared in the usual way flows at 0 ° C. with stirring into an aqueous solution of 11 parts by weight of 1,3-dioxybenzene (M.

   G.110) in the presence of sodium carbonate. After the coupling has ended, a diazo suspension obtained from 17.3 parts by weight of 1-aminobenzene-4-sulfonic acid gradually flows into the dye formed. In soda-alkaline. In the medium, the formation of the disazo dye ends very quickly. The dye is salted out, isolated and dried.



  It is a brown powder that dissolves in water with a reddish light brown color and colors leather well in yellow-brown tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines wasser löslichen Disazofarbstoffes, dadurch gekenn zeichnet, dass man 1,3-Diogybenzol mit 1 Mol. diazotierter 4-Aminobenzol-l-methyltaurin-2- sulfonsäure und 1 Mol. diazotierter 1-Amino- benzol-4-sulfonsäure vereinigt. Der so erhaltene Farbstoff stellt ein brau nes Pulver dar, PATENT CLAIM: Process for the preparation of a water-soluble disazo dye, characterized in that 1,3-diogybenzene is mixed with 1 mole of diazotized 4-aminobenzene-1-methyltaurine-2-sulfonic acid and 1 mole of diazotized 1-aminobenzene-4- sulfonic acid combined. The dye thus obtained is a brown powder, das sich in Wasser mit röt lich hellbrauner Farbe löst und Leder in gelbbraunen Tönen gut einfärbt. which dissolves in water with a reddish light brown color and dyes leather well in yellow-brown tones.
CH204144D 1936-09-04 1937-08-19 Process for the preparation of a water-soluble disazo dye. CH204144A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE204144X 1936-09-04
CH200675T 1938-10-31

Publications (1)

Publication Number Publication Date
CH204144A true CH204144A (en) 1939-04-15

Family

ID=25723565

Family Applications (1)

Application Number Title Priority Date Filing Date
CH204144D CH204144A (en) 1936-09-04 1937-08-19 Process for the preparation of a water-soluble disazo dye.

Country Status (1)

Country Link
CH (1) CH204144A (en)

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