CH128146A - 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
- CH128146A CH128146A CH128146DA CH128146A CH 128146 A CH128146 A CH 128146A CH 128146D A CH128146D A CH 128146DA CH 128146 A CH128146 A CH 128146A
- Authority
- CH
- Switzerland
- Prior art keywords
- acid
- dye
- phenonaphtosafranine
- preparation
- series
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
Verfahren zur Darstellung eines Farbstoffes der Phenonaphtosafraninreihe. Es wurde gefunden, dass ein wertvoller, neuer Farbstoff entsteht, wenn man 1-Amino- 4-äthylbenzylanilin-2-sulfosäure mit 3-Di- methylisorosindulin-1. 6-disulfosäure der For. mel:
EMI0001.0009
kondensiert.
Die entstandene Phenonaphto- safranindisulfosäure enthält eine Sulfo- W 01 uppe in Orthostellung <B>-</B> zum Safraninstick- stoff (-16-Stellung), wodurch die vorzüg liche Alkaliechtheit der Färbungen bedingt wird.
Der neue Farbstoff ist ein dunkles Pul ver, das sich in Wasser mit blauer Farbe, in konzentrierter Schwefelsäure grasgrün löst. <I>Beispiel:</I> 16 Teile 1-Amino-4-äthylbenzylanilin-2- sulfosäure werden mit 3 Teilen Soda in 100 Teilen Wasser siedend gelöst und 26 Teile Mononatriumsalz der 3-Dimethylisorosindu- lin-1. 6-disulfosäure, sowie 20 Teile Natrium azetat kristallisiert in 200 Teilen Wasser beigefügt. Man kocht solange unter Rück fluss, bis eine gezogene Probe, in konzentrier ter Schwefelsäure gelöst, eine rein grüne Farbe zeigt.
Man verdünnt auf 1500 Teile und macht sodaalkalisch. Dann wird mit Salz ausgeschieden und der harzige Kuchen getrocknet. Der Farbstoff färbt die anima lische Faser licht- und alkaliecht blau. Er hat folgende Konstitution:
EMI0001.0035
Process for the preparation of a dye of the phenonaphtosafranine series. It has been found that a valuable, new dye is produced if 1-amino-4-ethylbenzylaniline-2-sulfonic acid is mixed with 3-dimethylisorosindulin-1. 6-disulfonic acid of For. mel:
EMI0001.0009
condensed.
The resulting phenonaphthosafranine disulphonic acid contains a sulpho-W 01 group in the ortho position <B> - </B> to the safranine nitrogen (-16 position), which ensures the excellent alkali fastness of the dyeings.
The new dye is a dark powder that dissolves blue in water and grass green in concentrated sulfuric acid. <I> Example: </I> 16 parts of 1-amino-4-ethylbenzylaniline-2-sulfonic acid are dissolved with 3 parts of soda in 100 parts of boiling water and 26 parts of the monosodium salt of 3-dimethylisorosindulin-1. 6-disulfonic acid and 20 parts of sodium acetate crystallized in 200 parts of water were added. The mixture is refluxed until a sample drawn, dissolved in concentrated sulfuric acid, shows a pure green color.
It is diluted to 1500 parts and made alkaline with soda. Then it is excreted with salt and the resinous cake is dried. The dye dyes the animal fibers light and alkaline blue. He has the following constitution:
EMI0001.0035
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE128146X | 1926-02-13 | ||
CH124764T | 1928-01-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH128146A true CH128146A (en) | 1928-10-16 |
Family
ID=25710318
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH128146D CH128146A (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) | CH128146A (en) |
-
1927
- 1927-02-08 CH CH128146D patent/CH128146A/en unknown
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