CH86982A - Process for the production of an azo dye particularly suitable for cotton printing. - Google Patents

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

Info

Publication number
CH86982A
CH86982A CH86982DA CH86982A CH 86982 A CH86982 A CH 86982A CH 86982D A CH86982D A CH 86982DA CH 86982 A CH86982 A CH 86982A
Authority
CH
Switzerland
Prior art keywords
production
particularly suitable
azo dye
cotton
sulfo
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 CH86982A publication Critical patent/CH86982A/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
    • C09B29/16—Naphthol-sulfonic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  verfahren zur Herstellung eines zum     Baumwolldruck        besonders    geeigneten       Azofarustoffes.       Es wurde gefunden, dass man durch Kup  peln von     diazotierter        4-Sulfo-2-ainino-l-oxy-          benzol-6-carbonsäure    mit     1-Oxynaphtalin-3-          sulfo-5-carbonsäure    einen     Azofarbstoff    erhält,  welcher sich in Wasser mit     violettroter,    in  konzentrierter Schwefelsäure mit blauroter  Farbe löst und auf Baumwolle, nach dein  Chromdruckverfahren bedruckt, seifen-,

       chlor-          und    lichtechte rotviolette Töne gibt.  



  <I>Beispiel:</I>  Die auf bekannte Art aus 23,3 Teilen  4     -Sulfo-    2     -amino-    1     -oxybenzol-    6     -carbonsäure     dargestellte     Diazoverbindung    gibt man unter  Rühren zu einer möglichst konzentrierten  Lösung von 29 Teilen des     Mononatriumsalzes     der     1-Oxynaphtalin-3-sulfo-5-carbonsäui-e,    40  Teilen Soda und 26 Teilen Natronlauge     iL       30 %. Der kristallinisch ausfallende Farbstoff  wird kalt filtriert, gepresst und getrocknet.



  process for the production of an azo-fragrant substance particularly suitable for cotton printing. It has been found that coupling diazotized 4-sulfo-2-ainino-1-oxybenzene-6-carboxylic acid with 1-oxynaphthalene-3-sulfo-5-carboxylic acid gives an azo dye which turns violet-red in water , dissolves in concentrated sulfuric acid with a blue-red color and is printed on cotton using the chrome printing process, soapy,

       gives chlorine and lightfast red-violet tones.



  <I> Example: </I> The diazo compound prepared in a known manner from 23.3 parts of 4-sulfo-2-amino-1 -oxybenzene-6-carboxylic acid is added with stirring to a solution of 29 parts of the monosodium salt which is as concentrated as possible 1-Oxynaphtalin-3-sulfo-5-carbonsäui-e, 40 parts of soda and 26 parts of sodium hydroxide solution iL 30%. The dyestuff which precipitates in crystalline form is filtered cold, pressed and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines zum Baumwolldrucke besonders geeigneten Azo- farbstoffes, welcher sich in Wasser mit vio- lettroter, in konzentrierter Schwefelsäure mit blauroter Farbe löst und auf Baumwolle, nach dein Chromdruckverfahren bedruckt, ein seifen-, chlor- und lichtechtes rotes Violett gibt, dadurch gekennzeichnet, PATENT CLAIM: Process for the production of an azo dye particularly suitable for cotton printing, which dissolves in water with violet-red, in concentrated sulfuric acid with a blue-red color and gives a soap, chlorine and lightfast red violet on cotton, printed using the chrome printing process , characterized, dass die Diazo- verbindung der 4-Sulfo-2-amino-l-oxybenzol- 6-carbonsä ure mit 1-Oxynaphtalin-3-sulfo-5- carbonsäure kombiniert wird. that the diazo compound of 4-sulfo-2-amino-1-oxybenzene-6-carboxylic acid is combined with 1-oxynaphthalene-3-sulfo-5-carboxylic acid.
CH86982D 1918-05-24 1918-05-24 Process for the production of an azo dye particularly suitable for cotton printing. CH86982A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH86026T 1918-05-24
CH86982T 1918-05-24

Publications (1)

Publication Number Publication Date
CH86982A true CH86982A (en) 1920-11-01

Family

ID=25703521

Family Applications (1)

Application Number Title Priority Date Filing Date
CH86982D CH86982A (en) 1918-05-24 1918-05-24 Process for the production of an azo dye particularly suitable for cotton printing.

Country Status (1)

Country Link
CH (1) CH86982A (en)

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