CH174538A - 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
CH174538A
CH174538A CH174538DA CH174538A CH 174538 A CH174538 A CH 174538A CH 174538D A CH174538D A CH 174538DA CH 174538 A CH174538 A CH 174538A
Authority
CH
Switzerland
Prior art keywords
yellow
preparation
new
dye
monoazo 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 CH174538A publication Critical patent/CH174538A/en

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Description

  

  verfahren zur Darstellung eines neuen     llionoazofarbstofPes.       Es wurde gefunden,     dass    man einen neuen  wertvollen     Monoazofarbstoff    erhält, wenn  man die     Diazoverbindung    von     4-Amino-di-          phenyläth-er-2-sulfäthylanilid    mit     1-(2'-Cblor-          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-          echtbeit    und vorzüglicher     Seewasserechtheit.          Beispiel:

       <B>36,8</B> kg     4-Aminodiphenyläther-2-sulfäthyl-          anilid    werden     diazotiert.    Die     Diazolösung     lässt man zu einer     natriumacetathaltigen    Auf  lösung von 29 kg     1-(2'-Chlor-5'-sulfophenyl)-          3-methyl-5-pyra.zolon    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 llionoazo dye. It has been found that a new valuable monoazo dye is obtained if the diazo compound of 4-amino-diphenylether-2-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; he dyes wool and silk in greenish yellow tones with very good fulling and excellent seawater fastness. Example:

       36.8 kg of 4-aminodiphenyl ether-2-sulfethyl anilide are diazotized. The diazo solution is allowed to flow into a sodium acetate-containing solution of 29 kg of 1- (2'-chloro-5'-sulfophenyl) -3-methyl-5-pyra.zolon. You then neutralize by gradually adding soda solution, work up in the usual way and obtain the new dye as a yellow powder.

Claims (1)

PATENTANSPRUCH Verfahren zur Darstellung eines neuen Mo noazofarbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung von 4-Amino-di- phenyläther-2-sulfäthylanilid mit 1-(2'-Chlor- 5'-sulfophenyl)-3-methyl-5-pyrazolon kom biniert. PATENT CLAIM A process for the preparation of a new monazo dye, characterized in that the diazo compound of 4-amino-diphenyl ether-2-sulfethylanilide with 1- (2'-chloro-5'-sulfophenyl) -3-methyl-5-pyrazolone com bin. 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 griinlich 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.
CH174538D 1933-01-23 1933-11-06 Process for the preparation of a new monoazo dye. CH174538A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE174538X 1933-01-23
CH170769T 1933-11-06

Publications (1)

Publication Number Publication Date
CH174538A true CH174538A (en) 1935-01-15

Family

ID=25718994

Family Applications (1)

Application Number Title Priority Date Filing Date
CH174538D CH174538A (en) 1933-01-23 1933-11-06 Process for the preparation of a new monoazo dye.

Country Status (1)

Country Link
CH (1) CH174538A (en)

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