CH122910A - Process for the preparation of a developer dye. - Google Patents
Process for the preparation of a developer dye.Info
- Publication number
- CH122910A CH122910A CH122910DA CH122910A CH 122910 A CH122910 A CH 122910A CH 122910D A CH122910D A CH 122910DA CH 122910 A CH122910 A CH 122910A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- blue
- dye
- mol
- developer
- Prior art date
Links
Description
Verfahren zur Darstellung eines Entwichlerfarbstoffes. Es wurde gefunden, dass ein wertvoller Entwicklerfarbstoff erhalten wird, wenn man 1 Mol. tetrazotiertes o-Tolidin mit 2 Mol. 3'-Amino - 4'-methyl- 5'-sulfo - l-phenyl-5-pyra- zolon-3-karbonsäure kuppelt.
Der neue Farbstoff bildet ein braun schwarzes Pulver, das sich in Wasser mit blauroter, in konzentrierter Schwefelsäure mit blauvioletter Farbe löst. Er färbt unge- beizte Baumwolle in bordeauroten Tönen, welche durch Diazotieren auf der Faser und nachfolgende Entwicklung mit f-Naphtol ohne wesentliche Nuancenänderung wasch echt fixiert werden.
Beispiel Die Tetrazolösung aus 21,2 Teilen o-To- lidin wird bei<B>0-51</B> C mit. der neutralen Lösung des Trinatriumsalzes von 62,6 Teilen 3'-Amino-4'-methyl - 5'-sulfo- i-phenyl-5-pyra- zolon-3-karbonsäure verrührt. Die Kupplung ist nach wenigen Stunden beendigt. Es wird sodann die Lösung von 20 Teilen kalzinierter Soda zugegeben, aufgekocht und der Farb stoff ausgesalzen.
Process for the preparation of a developer dye. It has been found that a valuable developer dye is obtained if 1 mole of tetrazotized o-tolidine is mixed with 2 moles of 3'-amino-4'-methyl-5'-sulfo-1-phenyl-5-pyrazolone-3 -carboxylic acid couples.
The new dye forms a brown-black powder that dissolves in water with a blue-red color, and in concentrated sulfuric acid with a blue-violet color. It dyes unstained cotton in bordeaux red tones, which are fixed by diazotizing on the fiber and subsequent development with f-naphthol without any significant change in shade.
Example The tetrazo solution from 21.2 parts of o-tolidin is at <B> 0-51 </B> C with. the neutral solution of the trisodium salt of 62.6 parts of 3'-amino-4'-methyl-5'-sulfo-i-phenyl-5-pyrazolone-3-carboxylic acid was stirred. The coupling is completed after a few hours. The solution of 20 parts of calcined soda is then added, the mixture is boiled and the dye is salted out.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH119229T | 1925-10-17 | ||
GB122910X | 1926-02-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH122910A true CH122910A (en) | 1927-10-17 |
Family
ID=25709213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH122910D CH122910A (en) | 1925-10-17 | 1926-05-14 | Process for the preparation of a developer dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH122910A (en) |
-
1926
- 1926-05-14 CH CH122910D patent/CH122910A/en unknown
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