CH128151A - 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
- CH128151A CH128151A CH128151DA CH128151A CH 128151 A CH128151 A CH 128151A CH 128151D A CH128151D A CH 128151DA CH 128151 A CH128151 A CH 128151A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- phenonaphtosafranine
- preparation
- acid
- series
- Prior art date
Links
Description
Verfahren zur Darstellung eines Farbstoffes der Phenonaphtosafraninreihe. Es wurde gefunden, dass ein neuer, wertvol ler Farbstoff entsteht, wenn man 1-Amino- 5 - methyl - 4 - monomethylanilin - 2 - sulf osäure mit 3-Dimethylisorosindulin-2.6-disulfosäure der Formel
EMI0001.0011
kondensiert.
Die entstandene Phenonaphto- safranindisulfosäure enthält eine Sulfo- gruppe in Orthostellung zum Safraninstick- stoff (-16-Stellung), wodurch die vorzüg liche Alkaliechtheit der Färbungen bedingt. wird.
Der neue Farbstoff ist ein dunkles Pul ver, das in Wasser mit blauer Farbe, in konzentrierter Schwefelsäure grasgrün lös lich ist. <I>Beispiel</I> 11 Teile 1-Amino-5-methyl-4-monomethyl- anilin-2-sulfosäure werden gelöst in 3 Teilen Soda und 80 Teilen Wasser, hierauf 26 Teile Mononatriumsalz der 3-Dimethylisorosindu- lin-2.6-disuifosäure, sowie 20 Teile Na- tiiumacetat kristallisiert in 200 Teilen Wasser beigefügt.
Dann wird so lange un ter Rückfluss gekocht, bis eine Probe, in konzentrierter Schwefelsäure gelöst, eine rein grüne Farbe zeigt. Man lässt abkühlen und fällt den Farbstoff unter Zugabe von Salz. Der Farbstoff färbt die animalische Faser in saurem Bade licht- und alkaliecht blau. Seine Konstitution ist folgende:
EMI0001.0034
Process for the preparation of a dye of the phenonaphtosafranine series. It has been found that a new, valuable dye is formed when 1-amino-5-methyl-4-monomethylaniline-2-sulfonic acid is mixed with 3-dimethylisorosindulin-2,6-disulfonic acid of the formula
EMI0001.0011
condensed.
The resulting phenonaphthosafranine disulphonic acid contains a sulpho group in the ortho position to the safranine nitrogen (-16 position), which means that the dyeings are particularly fast to alkali. becomes.
The new dye is a dark powder that is blue in water and grass-green in concentrated sulfuric acid. <I> Example </I> 11 parts of 1-amino-5-methyl-4-monomethyl-aniline-2-sulfonic acid are dissolved in 3 parts of soda and 80 parts of water, followed by 26 parts of the monosodium salt of 3-dimethylisorosindulin-2.6 -disulfonic acid and 20 parts of sodium acetate crystallized in 200 parts of water were added.
Then it is refluxed until a sample, dissolved in concentrated sulfuric acid, shows a pure green color. It is allowed to cool and the dye is precipitated with the addition of salt. The dye dyes the animal fiber in acidic bath light and alkali-fast blue. Its constitution is as follows:
EMI0001.0034
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE128151X | 1926-02-13 | ||
CH124764T | 1928-01-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH128151A true CH128151A (en) | 1928-10-01 |
Family
ID=25710323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH128151D CH128151A (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) | CH128151A (en) |
-
1927
- 1927-02-08 CH CH128151D patent/CH128151A/en unknown
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