CH194967A - Process for the preparation of a dioxazine dye sulfonic acid. - Google Patents
Process for the preparation of a dioxazine dye sulfonic acid.Info
- Publication number
- CH194967A CH194967A CH194967DA CH194967A CH 194967 A CH194967 A CH 194967A CH 194967D A CH194967D A CH 194967DA CH 194967 A CH194967 A CH 194967A
- Authority
- CH
- Switzerland
- Prior art keywords
- sulfonic acid
- preparation
- acid
- condensation product
- dioxazine
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Coloring (AREA)
Description
Verfahren zur Darstellung einer Diogazinfarbstoffsulfosäure. Gegenstand des vorliegenden Zusatzpaten tes ist ein Verfahren zur Darstellung einer Dioxazinfarbstoffsulfosäure, welches dadurch gekennzeichnet ist, dass man das Konden sationsprodukt, welches aus 1 Mol Tetra- chlorchinon und 2 Mol 4-Amino-3'.4'-dichlor- diplienylamin-2-snlfosäure durch Umsetzen in Alkohol in Gegenwart eines säurebindenden Mittels erhältlich ist,
durch Behandeln mit einem sulfierend wirkenden Kondensations mittel in die Dioxazinverbindung überführt und das Kondensationsprodukt mit einer ver dünnten Säure erhitzt. <I>Beispiel:
</I> 50 Gewichtsteile des Kondensationspro duktes, welches aus 1 Mol Tetrachlorchinon und 2 Mol 4-Amino-3'.4'-dichlor-diphenyl- amin-2-sulfosäure durch Umsetzen in Alkohol oder Wasser in Gegenwart eines säurebinden den Mittels erhältlich ist, werden in 700 Gewichtsteilen Oleum, 20 /oig, 5 Stunden bei 20-251 C gerührt. Dann wird auf 1500 Gewichtsteile Eis gegossen und die blaue Masse 5 Stunden gekocht.
Nach dem Gus- salzen wird der Farbstoff mit Kochsalzlösung neutral gewaschen und getrocknet. Er löst sich in konzentrierter Schwefelsäure blau, das Ausgangsmaterial dagegen trüb gelb. Der Farbstoff färbt Baumwolle und Seide in blauen Tönen.
Process for the preparation of a diogazine dye sulfonic acid. The subject of the present additional patent is a process for the preparation of a dioxazine dye sulfonic acid, which is characterized in that the condensation product, which is composed of 1 mole of tetra-chloroquinone and 2 moles of 4-amino-3'.4'-dichloro-diplienylamine-2- snlfosäure can be obtained by reaction in alcohol in the presence of an acid-binding agent,
converted into the dioxazine compound by treatment with a sulphurizing condensation agent and the condensation product is heated with a dilute acid. <I> example:
</I> 50 parts by weight of the condensation product, which is obtained from 1 mole of tetrachloroquinone and 2 moles of 4-amino-3'.4'-dichloro-diphenylamine-2-sulfonic acid by reacting in alcohol or water in the presence of an acid-binding agent is, are stirred in 700 parts by weight of oleum, 20%, for 5 hours at 20-251 C. Then ice is poured onto 1500 parts by weight and the blue mass is boiled for 5 hours.
After the cast salting, the dye is washed neutral with sodium chloride solution and dried. It dissolves blue in concentrated sulfuric acid, whereas the starting material is cloudy yellow. The dye dyes cotton and silk in blue tones.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE194967X | 1934-10-10 | ||
CH186848T | 1935-07-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH194967A true CH194967A (en) | 1937-12-31 |
Family
ID=25721441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH194967D CH194967A (en) | 1934-10-10 | 1935-10-09 | Process for the preparation of a dioxazine dye sulfonic acid. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH194967A (en) |
-
1935
- 1935-10-09 CH CH194967D patent/CH194967A/en unknown
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