CH174538A - Process for the preparation of a new monoazo dye. - Google Patents
Process for the preparation of a new monoazo dye.Info
- 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
Links
Landscapes
- Coloring (AREA)
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)
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) |
-
1933
- 1933-11-06 CH CH174538D patent/CH174538A/en unknown
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