CH123461A - Process for the preparation of a new dye. - Google Patents
Process for the preparation of a new dye.Info
- Publication number
- CH123461A CH123461A CH123461DA CH123461A CH 123461 A CH123461 A CH 123461A CH 123461D A CH123461D A CH 123461DA CH 123461 A CH123461 A CH 123461A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- preparation
- brown
- new dye
- green
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B51/00—Nitro or nitroso dyes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Coloring (AREA)
Description
Verfahren zur Darstellung eines neuen Farbstoffes. Es wurde gefunden, dass man einen wert vollen, in Wasser löslichen Farbstoff erhält, der vorzugsweise die tierische Faser in ech ten, klaren braunen Tönen färbt, wenn man 1 Mol. 2 . 4 . 6-Trinitro-l-chlorbenzol mit 1 Mol. 4-Aminodiphenylamin-2-sulfosäure kondensiert. Die Kondensation erfolgt unter Austritt des Chloratoms und wird zweck mässig in Wasser bei Kochtemperatur unter Zusatz von säurebindenden Mitteln vorgenom men und verläuft in sehr guter Ausbeute.
<I>Beispiel:</I> 24,7 Teile 2 . 4 . 6-Trinitro-l-chlorbenzol werden in 350 Teilen Wasser mit 26,4 Tei len 4-Aminodiphenylamin-2-sulfosäure unter Zugabe der nötigen Menge Natriumacetat mehrere Stunden gekocht. Hierauf wird heiss filtriert. Beim Erkalten kristallisiert der Farbstoff in grünglänzenden Kristallen aus. Sie werden abgesaugt und mit 5 %iger Koch salzlösung gewaschen.
Dem Farbstoff enstpricht folgendes For melbild
EMI0001.0014
Das Natronsalz des Farbstoffes bildet grünbronzierende Kristalle, die ein dunkel braunes Pulver geben. Die Lösung in war mem Wasser und Alkohol ist braunrot, in kalter konzentrierter Schwefelsäure grünlich gelb. Letztere wird beim Erwärmen grün. Wolle wird im sauren Bade in echten, klaren, braunen Tönen angefärbt.
Process for the preparation of a new dye. It has been found that a valuable, water-soluble dye is obtained which preferably dyes the animal fiber in genuine, clear brown tones if 1 mol. 4th 6-trinitro-1-chlorobenzene condensed with 1 mol. 4-aminodiphenylamine-2-sulfonic acid. The condensation takes place with the escape of the chlorine atom and is expediently vorgenom men in water at boiling temperature with the addition of acid-binding agents and proceeds in very good yield.
<I> Example: </I> 24.7 parts 2. 4th 6-trinitro-l-chlorobenzene are boiled for several hours in 350 parts of water with 26.4 parts of 4-aminodiphenylamine-2-sulfonic acid with the addition of the necessary amount of sodium acetate. It is then filtered while hot. When it cools, the dye crystallizes out in shiny green crystals. They are suctioned off and washed with 5% sodium chloride solution.
The following formula corresponds to the dye
EMI0001.0014
The sodium salt of the dye forms green-bronze crystals that give a dark brown powder. The solution in warm water and alcohol is brownish red, in cold concentrated sulfuric acid it is greenish yellow. The latter turns green when heated. In an acid bath, wool is dyed in real, clear, brown tones.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH123461T | 1926-07-19 | ||
CH121572T | 1926-07-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH123461A true CH123461A (en) | 1927-11-16 |
Family
ID=25709717
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH123461D CH123461A (en) | 1926-07-19 | 1926-07-19 | Process for the preparation of a new dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH123461A (en) |
-
1926
- 1926-07-19 CH CH123461D patent/CH123461A/en unknown
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