CH90835A - Process for the preparation of a substantive o-oxyazo dye. - Google Patents

Process for the preparation of a substantive o-oxyazo dye.

Info

Publication number
CH90835A
CH90835A CH90835DA CH90835A CH 90835 A CH90835 A CH 90835A CH 90835D A CH90835D A CH 90835DA CH 90835 A CH90835 A CH 90835A
Authority
CH
Switzerland
Prior art keywords
dye
oxyazo
direct
substantive
preparation
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 CH90835A publication Critical patent/CH90835A/en

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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
    • C09B35/02—Disazo dyes
    • C09B35/039—Disazo dyes characterised by the tetrazo component
    • C09B35/04—Disazo dyes characterised by the tetrazo component the tetrazo component being a benzene derivative
    • 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
    • C09B45/00—Complex metal compounds of azo dyes
    • C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/24—Disazo or polyazo compounds
    • C09B45/28—Disazo or polyazo compounds containing copper

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

Description

  

  Verfahren zur Herstellung eines     direktziehenden        o-Oxyazofarbstoffes.       Es wurde gefunden, dass durch Kuppeln  von dianotiertem     2-Amino-        4-chlor-5-nitro-1.-          oxybenzol    mit     2-Oxynaphtalin-3:6-disulfo-          säure,    Reduzieren,     Diazotieren    und Kuppeln  mit     -2-Amino-5-oxynaphtalin-7-sulfosäui#e    des  erhaltenen     11IIonoazofarbstoffes    ein direktziehen  der     o-Oxyazöfarbstoff    erbalten wird, welcher  Baumwolle in licht- und     alkaliempfindlichen     rotblauen Tönen anfärbt.

   Durch     Nachkupfern     oder durch Färben in der für direktziehende       Farbstoffe    üblichen Weise unter Zusatz- von       Kupferverbindungen    zum Bade werden her  vorragend licht- und     alkaliechte,    blaue Töne  erhalten.  



  <I>Beispiel: '</I>  ' 18,9 kg     2-Ainino-4-chlor-5-nitro-l-oxyben-          zol    werden auf übliche Weise dianotiert. Die       Diazoverbindung    lässt man einlaufen in eine  Lösung von 34,8 kg 2     #    3     #        6-Naphtoldisulfo=          @aitre    und 30 kg Soda.

   Nach 24 Stunden  wird auf 60   erwärmt,     init    einer Lösung von  36 kg kristallisiertem Schwefelnatrium ver  setzt und nach     '/z-stündigeni    Rühren der  Farbstoff durch Zusatz von Kochsalz und  Salzsäure bis zum Verschwinden der alka  lischen Reaktion gefällt.     Man    filtriert, presst,    löst wieder in 500 Liter Wasser, versetzt  nach dem Abkühlen mit 7,2 kg     Natriumnitrit     und säuert mit 50 kg Salzsäure an. Nach       einstündigem    Rühren lässt man die     Diazoazo=     Verbindung einlaufen in eine Lösung von.  24 kg     2-Amino-5-oxynaphtalin-7-sulfosäui-e    und  50 kg Soda.

   Nach 24 Stunden wird. der     Farb-          stoff    durch     Aussahen    isoliert.



  Process for the preparation of a substantive o-oxyazo dye. It has been found that by coupling dianotated 2-amino-4-chloro-5-nitro-1-oxybenzene with 2-oxynaphthalene-3: 6-disulfonic acid, reducing, diazotizing and coupling with -2-amino-5 -oxynaphtalin-7-sulfosäui # e of the obtained 11IIonoazo dye a direct pull of the o-oxyazo dye is inherited, which dyes cotton in light- and alkali-sensitive red-blue shades.

   By re-coppering or by dyeing in the manner customary for substantive dyes with the addition of copper compounds to the bath, blue tones which are excellent in light and alkali are obtained.



  <I> Example: '</I>' 18.9 kg of 2-ainino-4-chloro-5-nitro-l-oxybenzene are dianotized in the usual way. The diazo compound is allowed to run into a solution of 34.8 kg of 2 # 3 # 6-Naphtholdisulfo = @aitre and 30 kg of soda.

   After 24 hours, the mixture is heated to 60 hours, treated with a solution of 36 kg of crystallized sodium sulphide and, after stirring for 1½ hours, the dye is precipitated by adding sodium chloride and hydrochloric acid until the alkaline reaction has disappeared. It is filtered, pressed, redissolved in 500 liters of water, mixed with 7.2 kg of sodium nitrite after cooling and acidified with 50 kg of hydrochloric acid. After stirring for one hour, the diazoazo compound is allowed to run into a solution of. 24 kg of 2-amino-5-oxynaphthalene-7-sulphonic acid and 50 kg of soda.

   After 24 hours it will. the dye is isolated by appearance.

Claims (1)

PATENTANSPRITGH: . Verfahren zur Herstellung eines direkt ziehenden o-Oxyazofarbstoffes, dadurch ge= kennzeichnet, dass dianotiertes. 2-Amino-4- chlor-5-nitro-l-oxybenzol mit 2'Oxynaphtalin- 3 : 6-disulfosäure gekuppelt wird und der resul tierende lyIonoazofarbstoff reduziert, diazqtiert und mit 2-Aniino-5-oxyn.aphtalin-7-sulfosäure 1?;ombiniert wird. PATENT APPLICATION:. Process for the production of a direct o-oxyazo dye, characterized in that it is dianotized. 2-Amino-4-chloro-5-nitro-1-oxybenzene is coupled with 2'oxynaphthalene-3: 6-disulfonic acid and the resulting lyionoazo dye is reduced, diacetated and treated with 2-aniino-5-oxyn.aphthalene-7-sulfonic acid 1?; Is combined. Der erhaltene Oxyazofarb- stoff färbtssatimwollein direktlicht- und alkali- empfindlichen, rotblauen Tönen. Durch Nach- kupfern oder durch Färben in der für direkt ziehende Farbstoffe üblichen Weise unter Zusatz von - Kupferverbindungen zum Bade werden hervorragend licht- .und alkäliechte, blaue Töne erhalten. The oxyazo dye obtained dyes satim wool in red-blue shades that are sensitive to direct light and alkali. By re-coppering or by dyeing in the manner customary for direct dyes with the addition of copper compounds to the bath, excellent light and alkaline blue tones are obtained.
CH90835D 1918-02-02 1918-02-02 Process for the preparation of a substantive o-oxyazo dye. CH90835A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH90835T 1918-02-02
CH90478T 1918-02-02

Publications (1)

Publication Number Publication Date
CH90835A true CH90835A (en) 1921-09-16

Family

ID=25704182

Family Applications (1)

Application Number Title Priority Date Filing Date
CH90835D CH90835A (en) 1918-02-02 1918-02-02 Process for the preparation of a substantive o-oxyazo dye.

Country Status (1)

Country Link
CH (1) CH90835A (en)

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