CH106700A - Process for the production of an azo dye particularly suitable for chrome printing on cotton. - Google Patents

Process for the production of an azo dye particularly suitable for chrome printing on cotton.

Info

Publication number
CH106700A
CH106700A CH106700DA CH106700A CH 106700 A CH106700 A CH 106700A CH 106700D A CH106700D A CH 106700DA CH 106700 A CH106700 A CH 106700A
Authority
CH
Switzerland
Prior art keywords
cotton
chrome
production
particularly suitable
azo dye
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 CH106700A publication Critical patent/CH106700A/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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
    • C09B29/12—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group of the benzene series
    • C09B29/14—Hydroxy carboxylic acids

Description

  

  Verfahren zur Herstellung eines für den Chromdruck auf Baumwolle     besonders     geeigneten     Azofarbstoffes.       Es wurde gefunden, dass man durch Kup  peln von     diazotiertem        4-Nitro-2-amino-l-oxy-          benzol    mit     Resorcylsäure    einen     Azofarbstoff     erhält, welcher beim Chromdruck auf Baum  volle satte rotbraune Töne von sehr guter  Wasch- und Seifenechtheit und von guter  Chlor- und Lichtechtheit erzeugt.

           Beispiel:       Die     Diazoverbindung    aus 15,4 Teilen     4-          Nitro-2-a.mino-l-o-xybenzol    wird unter Rüh  ren bei tiefer Temperatur in ein Gemisch von  15,4 Teilen     Resorcylsäure,    5,3 Teilen Soda,  15 Teilen Magnesia. und 40 Teilen Wasser  eingetragen. Nach beendigter Kombination  wird der gebildete Farbstoff durch Mineral  säure gefällt, filtriert, in     Sodalösung    gelöst  und     ausgesalzen.     



  Der neue Farbstoff bildet ein dunkles  Pulver. Er löst sich in Wasser mit rot  brauner Farbe, welche auf Zusatz von Soda  etwas röter wird. In konzentrierter Schwefel  säure ist er mit gelbbrauner Färbe löslich.    Im Chromdruck auf Baumwolle erzeugt er  satte rotbraune Töne von sehr guter     Wasch-          und    Seifen-, und von guter Chlor- und Licht  echtheit.



  Process for the production of an azo dye particularly suitable for chrome printing on cotton. It has been found that by coupling diazotized 4-nitro-2-amino-1-oxybenzene with resorcylic acid, an azo dye is obtained which, when printed on chrome, is full, deep red-brown tones of very good wash and soap fastness and good chlorine - and produces lightfastness.

           Example: The diazo compound from 15.4 parts of 4-nitro-2-a.mino-l-o-xybenzene is stirred into a mixture of 15.4 parts of resorcylic acid, 5.3 parts of soda, 15 parts of magnesia at low temperature. and 40 parts of water entered. After the combination is complete, the dye formed is precipitated with mineral acid, filtered, dissolved in soda solution and salted out.



  The new dye forms a dark powder. It dissolves in water with a red-brown color, which becomes a little redder when soda is added. In concentrated sulfuric acid it is soluble with a yellow-brown color. In the chrome print on cotton, it creates rich red-brown tones of very good detergency and soap, and of good chlorine and light fastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines für den Chromdruck auf Baumwolle besonders geeig neten Azofarbstoffes, dadurch gekennzeich net, dass diazotiertes 4-Nitro-2-amino-l-oxy- benzol mit R2sorcylsäure gekuppelt wird. Der neue Farbstoff bildet ein dunkles Pulver. Er löst sich in Wasser mit rotbrauner Farbe, welche auf Zusatz von Soda etwas röter wird. In konzentrierter Schwefelsäure ist er mit gelbbrauner Farbe löslich. Im Chromdruck auf Baumwolle erzeugt er satte rotbraune Töne von sehr guter Wasch- und Seifen-, und von guter Chlor- und Licht echtheit. PATENT CLAIM: Process for the production of an azo dye particularly suitable for chrome printing on cotton, characterized in that diazotized 4-nitro-2-amino-1-oxybenzene is coupled with R2sorcylic acid. The new dye forms a dark powder. It dissolves in water with a red-brown color, which turns a little redder when soda is added. It is soluble in concentrated sulfuric acid with a yellow-brown color. In the chrome print on cotton, it creates rich red-brown tones of very good detergency and soap, and of good chlorine and light fastness.
CH106700D 1921-03-15 1923-06-07 Process for the production of an azo dye particularly suitable for chrome printing on cotton. CH106700A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH94229T 1921-03-15
CH106700T 1923-06-07

Publications (1)

Publication Number Publication Date
CH106700A true CH106700A (en) 1924-09-01

Family

ID=25704793

Family Applications (1)

Application Number Title Priority Date Filing Date
CH106700D CH106700A (en) 1921-03-15 1923-06-07 Process for the production of an azo dye particularly suitable for chrome printing on cotton.

Country Status (1)

Country Link
CH (1) CH106700A (en)

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