AT22658B - ) Process for the preparation of a blue dye of the anthracene series. - Google Patents
) Process for the preparation of a blue dye of the anthracene series.Info
- Publication number
- AT22658B AT22658B AT22658DA AT22658B AT 22658 B AT22658 B AT 22658B AT 22658D A AT22658D A AT 22658DA AT 22658 B AT22658 B AT 22658B
- Authority
- AT
- Austria
- Prior art keywords
- preparation
- blue dye
- anthracene series
- dye
- anthracene
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Darstellung eines blauen Farbstoffes der Anthracenreihe.
Ersetzt man in dem Verfahren der Patentschrift Nr. 22657 das dort verwendete l-Amido-2-halogenanthrachinon durch 2-Amido-1-3-dibromanthrachinon, so erhält man unter Eintritt der analogen Reaktion ebenfalls einen blauen Farbstoff vom gleichen Typus wie diejenigen des Stamm-Patentes.
Das Verfahren wird durch folgendes sseispic ! erläutert : B e i s p i e l. 10 kg 1-3-Dibrom-2-amidoanthrachinon werden mit 200 kg Nitrobenzol, 5 kg entwässertem Natriumacetat und 0#5 kg Kupferchlorid etwa zwei bis drei Stunden
EMI1.1
durch folgende Weichung versinnhildlicht :
EMI1.2
Der so erhaltene Farbstoff zeigt folgende Eigenschaften. Er ist in kochendem Nitrobenzol
EMI1.3
Chinolin. In Alkohol, Eisessig, Pyridin ist er so gut wie unlöslich. Die Lösung in konzentrierter Schwefelsäure ist olivcbraull, beim Eingiessen der Lösung in Wasser fällt der Farbstoff in blauen Flocken aus.
Durch Behandeln derselben mit alkalischen Reduktionsmitteln erhält man eine Küpe, aus welcher ungebeizte Baumwolle in rein grünlichblauen Nuancen von grosser Echtheit angefärbt wird.
Das im Beispiel verwandte 2-Amido-1-3-dibromanthrachinen kann erhalten werden durch Bromiercn von ss-Amidoanthrachinon mit etwas mehr als der berechneten Menge Brom in indifferenten Lösungsmitteln oder in wässeriger Suspension. Es bildet gelbomnge gefärbte Nadeln vom Schmelzpunkt 239-240 , löst sich in konzentrierter Schwefelsäure
EMI1.4
<Desc / Clms Page number 1>
Process for the preparation of a blue dye of the anthracene series.
If the l-amido-2-halogenanthraquinone used there is replaced by 2-amido-1-3-dibromoanthraquinone in the process of patent specification No. 22657, a blue dye of the same type as those of the strain is also obtained when the analogous reaction occurs -Patents.
The procedure is carried out by the following sseispic! explained: Example. 10 kg of 1-3-dibromo-2-amidoanthraquinone are mixed with 200 kg of nitrobenzene, 5 kg of dehydrated sodium acetate and 0 # 5 kg of copper chloride for about two to three hours
EMI1.1
symbolized by the following softening:
EMI1.2
The dye thus obtained shows the following properties. It's in boiling nitrobenzene
EMI1.3
Quinoline. It is practically insoluble in alcohol, glacial acetic acid and pyridine. The solution in concentrated sulfuric acid is olive-brown; when the solution is poured into water, the dye precipitates in blue flakes.
By treating the same with alkaline reducing agents, a vat is obtained from which unstained cotton is dyed in pure greenish-blue shades of great fastness.
The 2-amido-1-3-dibromoanthraquinene used in the example can be obtained by brominating β-amidoanthraquinone with slightly more than the calculated amount of bromine in inert solvents or in aqueous suspension. It forms yellow needles with a melting point of 239-240 and dissolves in concentrated sulfuric acid
EMI1.4
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1903158474D DE158474C (en) | 1903-11-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT22658B true AT22658B (en) | 1906-01-10 |
Family
ID=5679625
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT22658D AT22658B (en) | 1903-11-14 | 1905-01-16 | ) Process for the preparation of a blue dye of the anthracene series. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT22658B (en) |
-
1905
- 1905-01-16 AT AT22658D patent/AT22658B/en active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AT22658B (en) | ) Process for the preparation of a blue dye of the anthracene series. | |
DE158474C (en) | ||
AT33317B (en) | Process for the preparation of mono- and dibromo derivatives of indigo. | |
AT33279B (en) | Process for the preparation of bromine derivatives of β-naphthylindigo. | |
DE611338C (en) | Process for the production of halogen-containing Kuepen dyes | |
DE1006557C2 (en) | Process for the production of anthraquinone dyes | |
DE622173C (en) | Process for the production of Kuepen dyes | |
AT39142B (en) | Process for the preparation of vat dyes of the anthracene series. | |
DE517441C (en) | Process for the preparation of Kuepen dyes of the anthraquinone series | |
DE544360C (en) | Process for the preparation of perylenetetracarboxylic acid | |
AT119495B (en) | Process for the preparation of perylenetetracarboxylic anhydride. | |
DE619080C (en) | Process for the preparation of Kuepen dyes of the antraquinone acridone series | |
AT96687B (en) | Process for the preparation of vat dyes of the anthracene series. | |
DE935988C (en) | Process for the production of Kuepen dyes | |
AT39139B (en) | Process for the preparation of monobromo trichloroindigo. | |
AT88391B (en) | Process for the preparation of vat dyes. | |
AT38658B (en) | Process for the preparation of halogen-containing vat dyes of the thioindigo series. | |
DE413941C (en) | Process for the preparation of Kuepen dyes | |
DE406041C (en) | Process for the preparation of Kuepen dyes | |
DE636223C (en) | Process for the production of nitrogen-containing condensation products | |
DE821386C (en) | Process for the production of Kuepen dyes | |
DE272296C (en) | ||
AT38255B (en) | Process for the preparation of halogen-containing vat dyes of the thioindigo series. | |
AT35656B (en) | Process for the preparation of halogen-containing vat dyes of the thioindigo series. | |
DE890104C (en) | Process for the production of dyes |