CH135114A - Process for the preparation of an orange-colored vat dye of the anthanthrone series. - Google Patents
Process for the preparation of an orange-colored vat dye of the anthanthrone series.Info
- Publication number
- CH135114A CH135114A CH135114DA CH135114A CH 135114 A CH135114 A CH 135114A CH 135114D A CH135114D A CH 135114DA CH 135114 A CH135114 A CH 135114A
- Authority
- CH
- Switzerland
- Prior art keywords
- orange
- anthanthrone
- vat dye
- preparation
- colored
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Coloring (AREA)
Description
Verfahren zur Darstellung eines orange färbenden Nüpenfarbstoffes der Anthanthronreihe. Es wurde gefunden, dass man den im Zusatzpatent Nr.<B>130618</B> beschriebenen rötlichen orange färbenden Küpenfarbstoff der Anthanthronreihe auch erhält, wenn man Brom ohne Zusatz eines Verdünnungsmittels auf Anthanthron bei Temperaturen unter <B>1000</B> einwirken lässt.
Die Reaktion kann durch Zusatz eines geeigneten Katalysators, wie Jod, beschleu nigt werden.
<I>Beispiel:</I> 1 Teil fein gepulvertes Anthanthron wird mit etwa 10 Teilen Brom versetzt und die Mischung einige Stunden bei gewöhnlicher Temperatur gerührt. Dann wird der Über schuss an Brom entfernt, zum Beispiel durch Destillation im Vakuum, von etwa anhaftenden Spuren Brom wird das Produkt in üblicher Weise befreit, zum Beispiel durch Erwärmen mit Bisulfit oder verdünnter Soda. Der so erhaltene Farbstoff entspricht der wahr scheinlichen Formel
EMI0001.0010
Der so erhaltene Küpenfarbstoff stellt ein rötliches Pulver dar, das sich in konzentrier ter Schwefelsäure leuchtend grün löst.
Aus der violetten Hydrosulfitküpe färbt er pflanz liche Faser in gleichen Tönen an, die beim Verhängen in ein leuchtendes Rotorange von ausgezeichneter Echtheit, insbesondere gegen Licht, übergehen.
Process for the preparation of an orange colored nub dye of the anthanthrone series. It has been found that the reddish orange vat dye of the anthanthrone series described in additional patent no. 130618 is also obtained if bromine is acted on anthanthrone at temperatures below 1000 without the addition of a diluent leaves.
The reaction can be accelerated by adding a suitable catalyst such as iodine.
<I> Example: </I> 1 part of finely powdered anthanthrone is mixed with about 10 parts of bromine and the mixture is stirred for a few hours at normal temperature. The excess of bromine is then removed, for example by distillation in vacuo, the product is freed from any traces of bromine adhering to it in the usual way, for example by heating with bisulfite or dilute soda. The dye thus obtained corresponds to the probable formula
EMI0001.0010
The vat dye obtained in this way is a reddish powder that dissolves in concentrated sulfuric acid in a bright green color.
From the violet hydrosulphite vat, it stains vegetable fibers in the same tones, which, when hung, turn into a bright red-orange of excellent fastness, especially to light.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEC37412D DE458598C (en) | 1925-11-07 | 1925-11-07 | Process for the production of orange dyes |
CH124528T | 1926-11-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH135114A true CH135114A (en) | 1929-08-31 |
Family
ID=29216709
Family Applications (7)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH130618D CH130618A (en) | 1925-11-07 | 1926-11-02 | Process for the preparation of an orange-colored vat dye of the anthanthrone series. |
CH131505D CH131505A (en) | 1925-11-07 | 1926-11-02 | Process for the preparation of an orange-colored vat dye of the anthanthrone series. |
CH124528D CH124528A (en) | 1925-11-07 | 1926-11-02 | Process for the preparation of an orange-colored vat dye of the anthanthrone series. |
CH130617D CH130617A (en) | 1925-11-07 | 1926-11-02 | Process for the preparation of an orange-colored vat dye of the anthanthrone series. |
CH135114D CH135114A (en) | 1925-11-07 | 1926-11-02 | Process for the preparation of an orange-colored vat dye of the anthanthrone series. |
CH147042D CH147042A (en) | 1925-11-07 | 1929-11-25 | Process for the production of an orange vat dye. |
CH147699D CH147699A (en) | 1925-11-07 | 1929-12-02 | Process for the production of an orange vat dye. |
Family Applications Before (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH130618D CH130618A (en) | 1925-11-07 | 1926-11-02 | Process for the preparation of an orange-colored vat dye of the anthanthrone series. |
CH131505D CH131505A (en) | 1925-11-07 | 1926-11-02 | Process for the preparation of an orange-colored vat dye of the anthanthrone series. |
CH124528D CH124528A (en) | 1925-11-07 | 1926-11-02 | Process for the preparation of an orange-colored vat dye of the anthanthrone series. |
CH130617D CH130617A (en) | 1925-11-07 | 1926-11-02 | Process for the preparation of an orange-colored vat dye of the anthanthrone series. |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH147042D CH147042A (en) | 1925-11-07 | 1929-11-25 | Process for the production of an orange vat dye. |
CH147699D CH147699A (en) | 1925-11-07 | 1929-12-02 | Process for the production of an orange vat dye. |
Country Status (1)
Country | Link |
---|---|
CH (7) | CH130618A (en) |
-
1926
- 1926-11-02 CH CH130618D patent/CH130618A/en unknown
- 1926-11-02 CH CH131505D patent/CH131505A/en unknown
- 1926-11-02 CH CH124528D patent/CH124528A/en unknown
- 1926-11-02 CH CH130617D patent/CH130617A/en unknown
- 1926-11-02 CH CH135114D patent/CH135114A/en unknown
-
1929
- 1929-11-25 CH CH147042D patent/CH147042A/en unknown
- 1929-12-02 CH CH147699D patent/CH147699A/en unknown
Also Published As
Publication number | Publication date |
---|---|
CH130617A (en) | 1928-12-15 |
CH131505A (en) | 1929-02-15 |
CH124528A (en) | 1928-03-16 |
CH147042A (en) | 1931-05-15 |
CH130618A (en) | 1928-12-15 |
CH147699A (en) | 1931-06-15 |
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