CH133997A - Process for the preparation of an alkaline cotton dye of the stilbene series. - Google Patents

Process for the preparation of an alkaline cotton dye of the stilbene series.

Info

Publication number
CH133997A
CH133997A CH133997DA CH133997A CH 133997 A CH133997 A CH 133997A CH 133997D A CH133997D A CH 133997DA CH 133997 A CH133997 A CH 133997A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
chs
sulfonic acid
alkaline
Prior art date
Application number
Other languages
German (de)
Inventor
Sandoz Chemische Fabri Vormals
Original Assignee
Chem Fab Vormals Sandoz
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 Fab Vormals Sandoz filed Critical Chem Fab Vormals Sandoz
Publication of CH133997A publication Critical patent/CH133997A/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
    • C09B56/00—Azo dyes containing other chromophoric systems
    • C09B56/04—Stilbene-azo dyes
    • C09B56/06—Bis- or polystilbene azo dyes
    • 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
    • C09B56/00—Azo dyes containing other chromophoric systems
    • C09B56/04—Stilbene-azo dyes

Landscapes

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

Description

  

  Verfahren zur Darstellung eines     alkalieehten    Baumwollfarbstoffes der     Stilbenreihe.       Es wurde gefunden, dass man zu einem       alkaliechten        Baumwollfarbstoff    der     Stilben-          reihe    gelangen kann, wenn man das Produkt  welches durch Kondensation des aus     p-Nitro-          toluol-o-sulfo-säure    durch Einwirkung von  Natronlauge erhältlichen Farbstoffs, mit     Ami-          doazotoluolsulfosäure        CHs    :     NH2    : N :

   N :     CHs          SOBH    =1 : 2 : 5 : 2' : 1' : 5' gewonnen werden  kann, mit einem Oxydationsmittel, beispiels  weise     Hypohalogenit    behandelt.  



  <I>Beispiel:</I>  50 kg des gelborange färbenden Konden  sationsproduktes von     Amidoazotoluolsulfosäure          CHs        :1\THz    : N : N :     CHs    :     SOsH    = 1:2:5  2':<B>l':

  </B> 5' mit dem Einwirkungsprodukt von  Natronlauge auf     p-Nitrotoluol-o-sulfosäure     werden in 500 Liter Wasser gelöst, 100 kg  Chlorkalk eingetragen und am     Rückfluss    ge  kocht, bis die Oxydation erfolgt ist, mit  Wasser verdünnt, mit Soda gefällt, heiss  filtriert und der Farbstoff aus dem Filtrat       ausgesalzen.       Der Farbstoff stellt ein bräunlich oranges  Pulver dar, er löst sich leicht in Wasser  mit     gelbstichig    oranger Farbe, von Schwefel  säure     wird'-er    mit     violettroter    Farbe aufge  nommen.

   Er färbt Baumwolle in     gelbstichigen     Tönen, die sich durch bessere     Alkaliechtheit     und eine klarere Nuance scharf vom Aus  gangsmaterial unterscheiden.



  Process for the preparation of an alkaline cotton dye of the stilbene series. It has been found that an alkaline cotton dye of the stilbene series can be obtained if the product, which is obtained by condensation of the dye obtainable from p-nitro-toluene-o-sulfonic acid by the action of sodium hydroxide, with amidoazotoluene sulfonic acid CHs: NH2: N:

   N: CHs SOBH = 1: 2: 5: 2 ': 1': 5 'can be obtained, treated with an oxidizing agent, for example, hypohalite.



  <I> Example: </I> 50 kg of the yellow-orange condensation product of amidoazotoluene sulfonic acid CHs: 1 \ THz: N: N: CHs: SOsH = 1: 2: 5 2 ': <B> l':

  </B> 5 'with the action product of sodium hydroxide on p-nitrotoluene-o-sulfonic acid are dissolved in 500 liters of water, 100 kg of chlorinated lime are added and refluxed until the oxidation has occurred, diluted with water, precipitated with soda filtered hot and the dye salted out from the filtrate. The dye is a brownish-orange powder, it dissolves easily in water with a yellowish orange color, sulfuric acid takes it up with a purple-red color.

   It dyes cotton in yellowish tones, which differ sharply from the starting material due to better alkali fastness and a clearer shade.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines alka- liechten Stilbenfarbstoffes, dadurch gekenn zeichnet, dass man das Produkt, welches durch Kondensation des aus p-Nitrotoluol-o- sulfosäure durch Einwirkung von Natronlauge erhältlichen Farbstoffs, mit Amidoazotoluol- sulfosäure CHs : NHz : N : N : CHs : S0sH = 1:2: 5 : 2' : 1' : 5' gewonnen werden kann, mit einem Oxydationsmittel behandelt. PATENT CLAIM: A process for the preparation of an alkaline stilbene dye, characterized in that the product, which is obtained by condensation of the dye obtainable from p-nitrotoluene-o-sulfonic acid by the action of sodium hydroxide solution, with amidoazotoluene sulfonic acid CHs: NHz: N: N : CHs: S0sH = 1: 2: 5: 2 ': 1': 5 'can be obtained, treated with an oxidizing agent. Der Farbstoff stellt ein bräunlichorange. Pulver dar, er löst sich leicht im Wasser mit gelbstichig oranger Farbe, von Schwefel säure wird er mit violettroter Farbe aufge nommen. Er färbt Baumwolle in gelbstickigen Tönen, die sich durch bessere Alkaliechtheit und eine reinere Nuance scharf vom Aus gangsmaterial unterscheiden. UNTERANSPRUCH: Verfähren gemäss Patentanspruch, dadurch gekennzeichnet, dass man ein Hypohalogenit als Oxydationsmittel verwendet. The dye turns a brownish orange. Powder, it dissolves easily in water with a yellowish orange color; sulfuric acid absorbs it with a purple-red color. It dyes cotton in yellowish tones, which differ sharply from the starting material due to better alkali fastness and a purer shade. SUBClaim: Method according to claim, characterized in that a hypohalite is used as the oxidizing agent.
CH133997D 1928-01-13 1928-01-13 Process for the preparation of an alkaline cotton dye of the stilbene series. CH133997A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH133997T 1928-01-13
CH125479T 1929-01-17

Publications (1)

Publication Number Publication Date
CH133997A true CH133997A (en) 1929-06-30

Family

ID=25710491

Family Applications (1)

Application Number Title Priority Date Filing Date
CH133997D CH133997A (en) 1928-01-13 1928-01-13 Process for the preparation of an alkaline cotton dye of the stilbene series.

Country Status (1)

Country Link
CH (1) CH133997A (en)

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