CH128140A - 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
- CH128140A CH128140A CH128140DA CH128140A CH 128140 A CH128140 A CH 128140A CH 128140D A CH128140D A CH 128140DA CH 128140 A CH128140 A CH 128140A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- phenonaphtosafranine
- preparation
- acid
- 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- äthylisorosindulin-1 . 6-disulfosäure der For mel
EMI0001.0007
kondensiert.
Die entstandene Phenonaphto- safranindisulfosäure enthält eine Sulfogruppe in Orthostellung zum Safraninstiekstoff (-16- Stellung), wodurch die vorzügliche Alkali echtheit der Färbungen bedingt wird.
Der neue Farbstoff ist ein dunkles Pul ver, das in Wasser mit blauer Farbe, in kon zentrierter Schwefelsäure grasgrün löslich ist. Beispiel: 16 Teile 1-Ami.no-4-äthylbenzylanilin-2- sulfosäure werden mit 3,1 Teilen Soda in 100 Teilen Wasser siedend gelöst und 27,5 Teile Mononatriumsalz der 3-Diäthylisorosindulin- 1.6-,disulfosäure, sowie 20 Teile Natrium acetat kristallisiert in 200 Teilen Wasser bei gefügt. Dann wird während 12 Stunden unter Rückfluss gekocht, worauf eine Probe, in konzentrierter Schwefelsäure gelöst, eine rein grüne Farbe zeigt. Der Farbstoff wird kalt mit wenig Kochsalz ausgefällt.
Er färbt aus schwach saurem Bade Seide und Wolle in alkali-, walk- und lichtechtem Blauton. Der Farbstoff entspricht der Konstitution:
EMI0001.0025
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-diethylisorosindulin-1. 6-disulfonic acid of the formula
EMI0001.0007
condensed.
The resulting phenonaphthosafranine disulphonic acid contains a sulpho group in the ortho position to the saffron intensive substance (-16 position), which means that the dyeings are extremely fast to alkali.
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: 16 parts of 1-Ami.no-4-ethylbenzylaniline-2-sulfonic acid are dissolved with 3.1 parts of soda in 100 parts of boiling water and 27.5 parts of the monosodium salt of 3-diethylisorosindulin-1,6-, disulfonic acid, and 20 parts of sodium acetate crystallizes in 200 parts of water when added. It is then refluxed for 12 hours, whereupon a sample, dissolved in concentrated sulfuric acid, shows a pure green color. The dye is precipitated cold with a little common salt.
It dyes silk and wool from weakly acidic baths in alkali, milled and lightfast blue tones. The dye corresponds to the constitution:
EMI0001.0025
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE128140X | 1926-02-13 | ||
CH124764T | 1928-01-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH128140A true CH128140A (en) | 1928-10-16 |
Family
ID=25710312
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH128140D CH128140A (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) | CH128140A (en) |
-
1927
- 1927-02-08 CH CH128140D patent/CH128140A/en unknown
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