CH136650A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH136650A
CH136650A CH136650DA CH136650A CH 136650 A CH136650 A CH 136650A CH 136650D A CH136650D A CH 136650DA CH 136650 A CH136650 A CH 136650A
Authority
CH
Switzerland
Prior art keywords
azo dye
mol
production
new azo
red
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH136650A publication Critical patent/CH136650A/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
    • C09B33/12—Disazo dyes in which the coupling component is a heterocyclic compound

Landscapes

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

Description

  

  Verfahren zur     HersteHung    eines neuen     Azofarbstoffes.       Es wurde gefunden,     dass    man einen neuen  Farbstoff erhält, wenn man auf<B>1</B>     Mol    des       5,5'-Dioxy-7,7'-disulfo-1,    2,2',     l'-dinaphthazins     der Formel  
EMI0001.0007     
    welches durch     Veresterung    der     OH-Gruppe     der     2-Amino-5-oxy-naphthalin-7-sulfosäure,     Oxydation zum     Azin        undnacbheriger        Ver-          seifung    des     lEsters    erhalten werden kann,

    2     Mol        diazotierte        Sulfanilsäure    einwirken       lässt.       Der erhaltene Farbstoff ist ein dunkles  Pulver, löst sich in Wasser rotbraun, in Lauge  und verdünnter     Sodalösung    blauviolett und  mit grüner Farbe in konzentrierter Schwefel  säure. Seide und Wolle werden aus saurem       Glaubersalzbacl    in rotbraunen Tönen angefärbt.

      <I>Beispiel:</I>    Man löst 12 Teile des     5,5'-Dioxy-7,7#-          disulfo-1,    2, 2',     l'-dinaphthazins    mit 4 Teilen  Soda in 200 Teilen Wasser     und    gibt<B>10</B> Teile       Natriumbiearbonat    zu. Darauf versetzt man  mit dein     Diazokörper    aus<B>9</B> Teilen     Anilin-4-          sulfosäure    und kuppelt bei<B>6-8 1)</B> bis zum  Verschwinden des     Diazokörpers.    Durch Koch  salz wird der neue Farbstoff abgeschieden.



  Process for the production of a new azo dye. It has been found that a new dye is obtained if one uses <B> 1 </B> mol of 5,5'-dioxy-7,7'-disulfo-1,2,2 ', l'-dinaphthazine der formula
EMI0001.0007
    which can be obtained by esterification of the OH group of 2-amino-5-oxy-naphthalene-7-sulfonic acid, oxidation to the azine and subsequent saponification of the ester,

    Allow 2 mol of diazotized sulfanilic acid to act. The dye obtained is a dark powder, dissolves red-brown in water, blue-violet in lye and dilute soda solution and with a green color in concentrated sulfuric acid. Silk and wool are dyed in red-brown shades from sour Glauber's salt.

      <I> Example: </I> Dissolve 12 parts of 5,5'-dioxy-7,7 # - disulfo-1, 2, 2 ', l'-dinaphthazins with 4 parts of soda in 200 parts of water and give < B> 10 </B> Allocate sodium bicarbonate. Then add your diazo body made of <B> 9 </B> parts of aniline-4-sulfonic acid and couple at <B> 6-8 1) </B> until the diazo body disappears. The new dye is deposited by cooking salt.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Azofarbstoffes, dadurch gekennzeichnet, dass man auf<B>1</B> Mol des 5,6'-Dioxy-7,7#-clisulfo- 1, 2, 2', l'-dinaphthazins der Formel EMI0002.0001 welches durch Veresterung der OH-Gruppe der 2-Amino-6-oxy-naphthalin-7-sulfosäure, Oxydation zum Azin und nachheriger Ver- seifung des Esters erhalten werden kann, Claim: Process for the preparation of a new azo dye, characterized in that one uses <B> 1 </B> mol of the 5,6'-dioxy-7,7 # -clisulfo- 1, 2, 2 ', l'-dinaphthazine the formula EMI0002.0001 which can be obtained by esterification of the OH group of 2-amino-6-oxynaphthalene-7-sulfonic acid, oxidation to the azine and subsequent saponification of the ester, 2 Mol diazotierte Sulfanilsäure einwirken lässt. Der erhaltene Farbstoff ist ein dunkles Pulver, löst sich it) Wasser rotbraun, in Lauge und verdüntiter Sadalösung blauviolett und mit grüner Farbe in konzentrierter Schwefelsäure. Seide und Wolle werden aus saurem Glaubersalzbad in rotbraunen Tönen angefärbt. Allow 2 mol of diazotized sulfanilic acid to act. The dye obtained is a dark powder, it dissolves red-brown in water, blue-violet in lye and dilute Soda solution, and green in concentrated sulfuric acid. Silk and wool are dyed from an acidic Glauber's salt bath in red-brown shades.
CH136650D 1929-11-30 1928-09-08 Process for the production of a new azo dye. CH136650A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH136650T 1929-11-30

Publications (1)

Publication Number Publication Date
CH136650A true CH136650A (en) 1929-11-30

Family

ID=4394297

Family Applications (1)

Application Number Title Priority Date Filing Date
CH136650D CH136650A (en) 1929-11-30 1928-09-08 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH136650A (en)

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