CH174537A - 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
CH174537A
CH174537A CH174537DA CH174537A CH 174537 A CH174537 A CH 174537A CH 174537D A CH174537D A CH 174537DA CH 174537 A CH174537 A CH 174537A
Authority
CH
Switzerland
Prior art keywords
yellow
new
preparation
monoazo dye
dye
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 CH174537A publication Critical patent/CH174537A/en

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      Verfahren    zur Darstellung eines neuen     Monoazofarbstoffes <        Es wurde gefunden, dass man     einen    neuen  wertvollen     Monoazofarbstoff    erhält, wenn  man die     Diazoverbindung    von     2-Amino-di-          phenylätller-4-sulfäthylanilid        mit        1-(2'-Chlor-          5'-sulfophenyl)-3-methyl-5-pyrazolon    kom  biniert.  



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

  </I>       3(i,8    kg     2-Aminodiphenyläther-4-sulfäthyl-          anilid    werden     diazotiert.    Die     Diazolösung     lässt man zu einer     natriumacetathaltigen    Auf  lösung von 29 kg     1-(2'-Chlor-5'-sulfophenyl)-          3-methyl-5-pyrazolon    zufliessen. Man neutra-         lisiert    darauf durch allmähliche Zugabe von       Sodalösung,    arbeitet in üblicher Weise auf  und erhält den neuen Farbstoff als 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-diphenylether-4-sulfethylanilide is obtained with 1- (2'-chloro-5'-sulfophenyl) - 3-methyl-5-pyrazolone combined.



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

  </I> 3 (1.8 kg of 2-aminodiphenyl ether-4-sulfethyl anilide are diazotized. The diazo solution is allowed to give a sodium acetate-containing solution of 29 kg of 1- (2'-chloro-5'-sulfophenyl) - 3- methyl-5-pyrazolone is poured in. It is then neutralized by gradually adding soda solution, worked up in the usual way and the new dye is obtained as a yellow powder.

Claims (1)

PATENTANSPRUCH: Zierfahren zur Darstellung eines neuen Mo- noazofarbstoffes, dadurch gekennzeichnet, dass man -die Diazoverbindung von 2-Amino-di- phenyläther-4-sulfäthylanilid mit 1-(2'-Chlor- 5'-sulfophenyl)-3-methyl-5-pyrazolon kom biniert. PATENT CLAIM: Zierfahren for the representation of a new monazo dye, characterized in that -the diazo compound of 2-amino-diphenylether-4-sulfethylanilide with 1- (2'-chloro-5'-sulfophenyl) -3-methyl- 5-pyrazolone combined. Der neue Farbstoff bildet ein gelbes Pulver, das in Wasser mit gelber, in konz. Schwefelsäure gleichfalls mit gelber Farbe löslich ist; er färbt Wolle und Seide in grünlich gelben Tönen mit sehr guter Walk- echtheit und vorzüglicher Seewasserechtheit. The new dye forms a yellow powder, which in water with yellow, in conc. Sulfuric acid is also soluble with a yellow color; it dyes wool and silk in greenish yellow tones with very good milled fastness and excellent seawater fastness.
CH174537D 1933-01-23 1933-11-06 Process for the preparation of a new monoazo dye. CH174537A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE174537X 1933-01-23
CH170769T 1933-11-06

Publications (1)

Publication Number Publication Date
CH174537A true CH174537A (en) 1935-01-15

Family

ID=25718993

Family Applications (1)

Application Number Title Priority Date Filing Date
CH174537D CH174537A (en) 1933-01-23 1933-11-06 Process for the preparation of a new monoazo dye.

Country Status (1)

Country Link
CH (1) CH174537A (en)

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