CH139083A - Process for the preparation of a sulfur-containing vat dye. - Google Patents
Process for the preparation of a sulfur-containing vat dye.Info
- Publication number
- CH139083A CH139083A CH139083DA CH139083A CH 139083 A CH139083 A CH 139083A CH 139083D A CH139083D A CH 139083DA CH 139083 A CH139083 A CH 139083A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- preparation
- sulfur
- vat dye
- vat
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
Verfahren zur Darstellung eines schwefelhaltigen Nüpenfarbstoffes. Gegenstand dieser Anmeldung ist ein Verfahren zur Darstellung eines Küpenfarb- stoffes, welches dadurch gekennzeichnet ist, dass man das 5.7-Diäthoxy-3-oxythionaphten (erhältlich durch Nitrieren von 3.
5-Diäthoxy- benzoesäure, Reduktion, Überführen der Amino- benzoesäure in 3.5-Diäthoxy-2-thioglykol-l.- oarbonsäure und Verschmelzen dieser Thio- glykolcarbonsäure mit Ätzkali) mit oxydie renden Mitteln behandelt. Der Farbstoff stellt ein dunkelblaues Pulver dar. Er bildet mit alkalischer Hydrosulfitlösung eine olivgrüne Küpe, aus der Baumwolle und Wolle in blaugrauen echten Tönen angefärbt werden.
Beispiel: 24 Teile 5.7-Diäthoxy-3-oxythionaphten von der Formel:
EMI0001.0019
werden in 18 Teilen Natronlauge von 40'B4 und 200 Teilen Wasser gelöst. Unter Rühren lässt man dann eine Lösung von 80 Teilen Ferricyankalium in 300 Teilen Wasser zu fliessen. Der Farbstoff scheidet sich als feiner blauer Niederschlag ab. Er wird 1/2 Stunde nachgerührt, dann wird der Farbstoff abge saugt, mit Wasser gewaschen und getrocknet. Der Farbstoff hat die Formel:
EMI0001.0022
Er bildet ein dunkelblaues Pulver, welches sich in kalter konzentrierter Schwefelsäure mit orangeroter Farbe und ebensolcher Fluo reszenz löst.
Mit alkalischem Hydrosulfit bildet der Farbstoff eine olivgrüne güpe und färbt daraus Baumwolle und Wolle in blau grauen echten Tönen 3n,
Process for the preparation of a sulfur-containing pomace dye. The subject of this application is a process for the preparation of a vat dye, which is characterized in that the 5,7-diethoxy-3-oxythionaphthene (obtainable by nitrating 3.
5-diethoxybenzoic acid, reduction, converting the aminobenzoic acid into 3,5-diethoxy-2-thioglycol-l-carboxylic acid and fusing this thioglycol carboxylic acid with caustic potash) treated with oxidizing agents. The dye is a dark blue powder. With alkaline hydrosulfite solution, it forms an olive-green vat from which cotton and wool are dyed in real blue-gray tones.
Example: 24 parts of 5.7-diethoxy-3-oxythionaphten of the formula:
EMI0001.0019
are dissolved in 18 parts of 40'B4 sodium hydroxide solution and 200 parts of water. A solution of 80 parts of potassium ferricyanide in 300 parts of water is then allowed to flow with stirring. The dye separates out as a fine blue precipitate. It is stirred for 1/2 hour, then the dye is filtered off with suction, washed with water and dried. The dye has the formula:
EMI0001.0022
It forms a dark blue powder which dissolves in cold concentrated sulfuric acid with an orange-red color and fluorescence.
With alkaline hydrosulphite the dye forms an olive-green güpe and dyes cotton and wool in blue-gray real shades 3n,
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE139083X | 1927-05-30 | ||
CH136652T | 1928-05-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH139083A true CH139083A (en) | 1930-03-31 |
Family
ID=25712808
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH139083D CH139083A (en) | 1927-05-30 | 1928-05-14 | Process for the preparation of a sulfur-containing vat dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH139083A (en) |
-
1928
- 1928-05-14 CH CH139083D patent/CH139083A/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH139083A (en) | Process for the preparation of a sulfur-containing vat dye. | |
CH136652A (en) | Process for the preparation of a sulfur-containing vat dye. | |
DE517444C (en) | Process for the preparation of sulphurous Kuepen dyes | |
DE567081C (en) | Process for the preparation of ester-like water-soluble compounds of Kuepen dyes | |
AT45018B (en) | Process for the preparation of red acid dyes of the triphenylmethane series. | |
DE445729C (en) | Process for the preparation of Bz-2-oxybenzanthrone | |
DE542176C (en) | Process for the preparation of indigoid dyes | |
DE476811C (en) | Process for the preparation of dyes of the anthracene series | |
DE367689C (en) | Process for creating real colors | |
CH228135A (en) | Process for the production of a vat dye. | |
CH120716A (en) | Process for the preparation of isodibenzanthrone. | |
CH256771A (en) | Process for the production of an anthraquinone derivative. | |
CH131503A (en) | Process for the production of a new chromium-containing azo dye. | |
CH120719A (en) | Process for the preparation of isodibenzanthrone. | |
CH120717A (en) | Process for the preparation of isodibenzanthrone. | |
CH256774A (en) | Process for the production of an anthraquinone derivative. | |
CH226630A (en) | Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series. | |
CH210527A (en) | Process for the production of an anthraquinone derivative. | |
CH293001A (en) | Process for the production of a vat dye. | |
CH157526A (en) | Process for the production of a new azo dye. | |
CH120707A (en) | Process for the preparation of isodibenzanthrone. | |
CH191168A (en) | Process for the production of a new dye of the anthraquinone series. | |
CH143400A (en) | Process for the preparation of a vat dye. | |
CH120718A (en) | Process for the preparation of isodibenzanthrone. | |
CH219577A (en) | Process for the preparation of a chromium-containing monoazo dye. |