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CH170769A - Process for the preparation of a new monoazo dye. - Google Patents

Process for the preparation of a new monoazo dye.

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Publication number
CH170769A
CH170769A CH170769DA CH170769A CH 170769 A CH170769 A CH 170769A CH 170769D A CH170769D A CH 170769DA CH 170769 A CH170769 A CH 170769A
Authority
CH
Switzerland
Prior art keywords
preparation
new
monoazo dye
yellow
fastness
Prior art date
Application number
Other languages
German (de)
Inventor
A-G J R Geigy
Original Assignee
Geigy Ag J R
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 Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH170769A publication Critical patent/CH170769A/en

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Description

  

      Verfahren    zur Darstellung eines neuen     Monoazofarbstoffes.       Es wurde gefunden, dass man einen neuen       wertvollen        Monoazofarbstoff    erhält, wenn  man die     Diazoverbindung    von     2-Amino-di-          phenyläther-4-sulfäthylanilid    mit     p-Sulfo-          hhenyl-3-methyl-5-pyrazolon    kombiniert.  



  Der neue Farbstoff bildet ein rötlich       gelbes    Pulver, das in Wasser     finit    gelber, in       konz.    Schwefelsäure gleichfalls mit gelber  Farbe     löslieh    ist; er färbt Wolle und Seide       ir    rötlich gelben Tönen mit sehr guter     Walk-          echtheit    und vorzüglicher     Seewasserechtheit,       <I>Beispiel:

  </I>  36.8 kg ? -     Aminodiphenyläther    - 4 -     sulf-          äthylanilid    werden     diazotiert.    Die     Diazo-          Iö        sung    lässt man zu einer     natriumaeetathalti-          gen        Auflösung    von 25,5 kg     p-Sulfophenyl-3-          methyl-5-pyrazolon    zufliessen. Man neutrali-         siert    darauf durch allmähliche Zugabe von       Sodalösung,    arbeitet in üblicher Weise auf  und erhält den neuen Farbstoff als rötlich  gelbes Pulver.



      Process for the preparation of a new monoazo dye. It has been found that a new valuable monoazo dye is obtained if the diazo compound of 2-amino-diphenyl ether-4-sulfethylanilide is combined with p-sulfohhenyl-3-methyl-5-pyrazolone.



  The new dye forms a reddish yellow powder, which is finely yellow in water, in conc. Sulfuric acid is also soluble with a yellow color; it dyes wool and silk in reddish yellow tones with very good flexing fastness and excellent seawater fastness, <I> Example:

  </I> 36.8 kg? - Aminodiphenylether - 4 - sulf- äthylanilid are diazotized. The diazo solution is allowed to flow into a sodium acetate-containing solution of 25.5 kg of p-sulfophenyl-3-methyl-5-pyrazolone. It is then neutralized by the gradual addition of soda solution, worked up in the usual way and the new dye is obtained as a reddish yellow powder.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Monoazofarbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung von 2-Amino.- diphenyläther-4-sulfäthyla.iiilid mit p-Sulfo- phenyl-3-methyl-5-pyrazolon kombiniert. PATENT CLAIM: Process for the preparation of a new monoazo dye, characterized in that the diazo compound of 2-amino.-diphenylether-4-sulfäthyla.iiilid is combined with p-sulfophenyl-3-methyl-5-pyrazolone. Der neue Farbstoff bildet ein rötlich gel bes Pulver, das in Wasser mit gelber, in konz. Schwefelsäure gleichfalls mit gelber Farbe löslich ist; er, färbt Wolle und Seide in rötlieh gelben Tönen mit sehr guter Walk- echtheit und vorzüglicher Seewasserechtheit. The new dye forms a reddish yellow powder, which in water with yellow, in conc. Sulfuric acid is also soluble with a yellow color; he, dyes wool and silk in reddish yellow tones with very good milled fastness and excellent seawater fastness.
CH170769D 1933-01-23 1933-11-06 Process for the preparation of a new monoazo dye. CH170769A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE170769X 1933-01-23

Publications (1)

Publication Number Publication Date
CH170769A true CH170769A (en) 1934-07-31

Family

ID=5688902

Family Applications (1)

Application Number Title Priority Date Filing Date
CH170769D CH170769A (en) 1933-01-23 1933-11-06 Process for the preparation of a new monoazo dye.

Country Status (1)

Country Link
CH (1) CH170769A (en)

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