CH128163A - Process for the preparation of a dye of the phenonaphtosafranine series. - Google Patents
Process for the preparation of a dye of the phenonaphtosafranine series.Info
- Publication number
- CH128163A CH128163A CH128163DA CH128163A CH 128163 A CH128163 A CH 128163A CH 128163D A CH128163D A CH 128163DA CH 128163 A CH128163 A CH 128163A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- preparation
- acid
- phenonaphtosafranine
- series
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
Verfahren zur Darstellung eines Farbstoffes der Phenonaphtosafraninreihe. Es wurde gefunden, dass ein neuer, wert voller Farbstoff entsteht, wenn man 1-Amino- 5-methyl-4-monoäthylanilin-2-sulfosäure mit 3-Dimethylisorosindulin-1 # 6 # 12-trisulfosäure der Formel
EMI0001.0010
kondensiert.
Die entstandene Phenonaphto- safranintrisulfosäure enthält eine Sulfogruppe in Orthostellung zum Safraninstickstoff (-16- Stellung), wodurch die vorzügliche Alkali echtheit der Färbungen bedingt wird. Der neue Farbstoff ist ein dunkles Pulver, das in Wasser mit blauer Farbe, in konzen trierter Schwefelsäure grasgrün löslich ist.
Beispiel: 400 Teile einer wässerigen Lösung, ent haltend 30 Teile ('/2 Molekül) des Mono natriumsalzes der 3-Dimethylisorosindulin- 1 # 6 # 12-trisulfosäure und 20 Teile Natrium azetat kristallisiert werden zusammen mit einer Lösung von 12 Teilen 1-Amino-5-methyl- 4-monoäthylanilin-2-sulfosäure in 80 Teilen Wasser und 3 Teilen Soda so lange gekocht, bis eine Probe, in konzentrierter Schwefel säure gelöst, eine rein grüne Farbe zeigt.
Der mit Kochsalz ausgeschiedene Farbstoff färbt die animalische Faser aus saurem Bade alkali- und lichtecht blau. Seine Konstitution ist folgende:
EMI0001.0030
Process for the preparation of a dye of the phenonaphtosafranine series. It has been found that a new, valuable dye is produced if 1-amino-5-methyl-4-monoethylaniline-2-sulfonic acid is mixed with 3-dimethylisorosindulin-1 # 6 # 12-trisulfonic acid of the formula
EMI0001.0010
condensed.
The resulting phenonaphthosafranin trisulphonic acid contains a sulpho group in the ortho position to the safranin nitrogen (-16 position), which determines the excellent alkali fastness of the dyeings. The new dye is a dark powder that is soluble in water with a blue color, and in concentrated sulfuric acid it is grass-green.
Example: 400 parts of an aqueous solution containing 30 parts (1/2 molecule) of the monosodium salt of 3-dimethylisorosindulin- 1 # 6 # 12-trisulfonic acid and 20 parts of sodium acetate are crystallized together with a solution of 12 parts of 1-amino -5-methyl- 4-monoethylaniline-2-sulfonic acid in 80 parts of water and 3 parts of soda boiled until a sample, dissolved in concentrated sulfuric acid, shows a pure green color.
The dyestuff excreted with common salt dyes the animal fibers from acidic baths, alkali and lightfast blue. Its constitution is as follows:
EMI0001.0030
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE128163X | 1926-02-13 | ||
CH124764T | 1928-01-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH128163A true CH128163A (en) | 1928-10-16 |
Family
ID=25710335
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH128163D CH128163A (en) | 1926-02-13 | 1927-02-08 | Process for the preparation of a dye of the phenonaphtosafranine series. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH128163A (en) |
-
1927
- 1927-02-08 CH CH128163D patent/CH128163A/en unknown
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