CH174536A - 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
CH174536A
CH174536A CH174536DA CH174536A CH 174536 A CH174536 A CH 174536A CH 174536D A CH174536D A CH 174536DA CH 174536 A CH174536 A CH 174536A
Authority
CH
Switzerland
Prior art keywords
preparation
new
dye
yellow
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 CH174536A publication Critical patent/CH174536A/en

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Description

  

  Verfahren zur Darstellung eines neuen     Nonoazofarbstoffes.       Es wurde gefunden, dass man einen neuen  wertvollen     1VIonoazofarbstoff    erhält, wenn  man die     Diazoverbindung    von     4-Amino-di-          phenyläther-2-sulfäthylanilid    mit     p-Sulfo-          phenyl-3-methyl-5-pyrazolon    kombiniert.  



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

  </I>       .'.t6,8    kg 4-     Aminodiphenyläther-2-sulfäthyl-          anilid    werden     diazotiert.    Die     Diazolösung     lässt man zu einer     natriumacetathaltigen    Auf  lösung von 25,5. kg p -     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     rötlich     gelbes Pulver.



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



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

  </I>. '. 6.8 kg 4-aminodiphenyl ether-2-sulfethyl anilide are diazotized. The diazo solution is allowed to give a sodium acetate solution of 25.5. kg p - sulfophenyl - 3 methyl-5-pyrazolone flow in. Then neutralize by gradually adding soda solution, work up in the usual way and get the new dye as a reddish yellow powder.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen iVIo- noazofarbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung von 4-Amino-di- phenyläther-2-sulfäthylanilid mit p-Sulfo- phenyl-3-methyl-5-pyrazolon kombiniert. PATENT CLAIM: Process for the preparation of a new ivioazo dye, characterized in that the diazo compound of 4-amino-diphenyl ether-2-sulfethylanilide is combined with p-sulfophenyl-3-methyl-5-pyrazolone. Der neue Farbstoff bildet ein rötlich gelbes Pulver, das in Wasser mit gelber, in konz. Schwefelsäure gleichfalls mit gelber Farbe löslich ist; er färbt Wolle und Seide in rötlich 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; it dyes wool and silk in reddish yellow tones with very good milled fastness and excellent seawater fastness.
CH174536D 1933-01-23 1933-11-06 Process for the preparation of a new monoazo dye. CH174536A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE174536X 1933-01-23
CH170769T 1933-11-06

Publications (1)

Publication Number Publication Date
CH174536A true CH174536A (en) 1935-01-15

Family

ID=25718992

Family Applications (1)

Application Number Title Priority Date Filing Date
CH174536D CH174536A (en) 1933-01-23 1933-11-06 Process for the preparation of a new monoazo dye.

Country Status (1)

Country Link
CH (1) CH174536A (en)

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