CH157245A - Process for the preparation of an acidic dye of the anthraquinone series. - Google Patents
Process for the preparation of an acidic dye of the anthraquinone series.Info
- Publication number
- CH157245A CH157245A CH157245DA CH157245A CH 157245 A CH157245 A CH 157245A CH 157245D A CH157245D A CH 157245DA CH 157245 A CH157245 A CH 157245A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- preparation
- condensed
- acidic
- anthraquinone series
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
Verfahren zur Darstellung eines sauren Farbstoffes der Anthrachinonreihe. Gegenstand dieses Zusatzpatentes ist ein Verfahren zur Darstellung eines sauren Farb stoffes der Anthrachinbnreihe, welches dadurch gekennzeichnet ist, dass man 4'-Amino-diphe- nylmethan-2-carbonsäure mit 1-Amino-4-brom- anthrachinon-2-sulfosäure kondensiert und den so erhaltenen Farbstoff mit einem sauren, Schwefel enthaltenden kondensationsmittel weiter kondensiert.
<I>Beispiel:</I> Eine Lösung von 50 Gewichtsteilen 4'- Amino-diphenylmethan-2-carbonsäure (erhält lich aus 4-Chlorbenzoyl-o-benzoesäure durch Umsetzen mit Ammoniak gemäss D. R. P. 234917 und darauffolgende Reduktion) in 750 Gewichtsteilen Wasser und 38 Gewichts teilen Soda wird mit 60 Gewichtsteilen 1- Amino -. 4 - bromanthrachinon - 2 - sulfosaurem Natrium und 2,5-Gewichtateilen Kupferchloriir versetzt.
Die Mischung färbt sich bereits nach halbstündigern, schwachern Sieden rein blau und wird zur Beendigung der Konden sation noch 6 Stunden unter Rückfluss er wärmt. Der Farbstoff wird, in üblicher Weise isoliert und gereinigt, als blaues kristallini sches Pulver erhalten.
20 Gewichtsteile dieses Farbstoffes wer den in 200 Gewichtsteilen Chlorsulfosäure gelöst und 20 Stuhden bei 15 0 gerührt. Zum Schluss wird die Temperatur noch 1/2 Stunde auf 50 0 erhalten und die Lösung in kaltem Wasser zersetzt. An Stelle von Chlorsulfon- säure kann auch konzentrierte Schwefelsäure in den gleichen Mengenverhältnissen und bei den gleichen Temperaturen angewandt wer den. Durch diese Massnahme tritt lediglich eine Kondensation und keine Sulfierung ein.
Der abgeschiedene Farbstoff wird filtriert, mit 10 % iger Kochsalzlösung neutral gewa- schen und getrocknet. Er färbt Wolle und Seide in blaugrauen bis tiefschwarzen Tönen an.
Process for the preparation of an acidic dye of the anthraquinone series. The subject of this additional patent is a process for the preparation of an acidic dye of the anthraquinone series, which is characterized in that 4'-amino-diphenylmethane-2-carboxylic acid is condensed with 1-amino-4-bromo-anthraquinone-2-sulfonic acid and the dye thus obtained is further condensed with an acidic, sulfur-containing condensing agent.
<I> Example: </I> A solution of 50 parts by weight of 4'-amino-diphenylmethane-2-carboxylic acid (obtainable from 4-chlorobenzoyl-o-benzoic acid by reaction with ammonia according to DRP 234917 and subsequent reduction) in 750 parts by weight of water and 38 parts by weight of soda is combined with 60 parts by weight of 1- amino -. 4 - bromoanthraquinone - 2 - sodium sulphate and 2.5 parts by weight of copper chloride are added.
The mixture turns pure blue after half an hour, low boiling and is refluxed for 6 hours to end the condensation. The dye, isolated and purified in the usual way, is obtained as a blue crystalline powder.
20 parts by weight of this dye who dissolved in 200 parts by weight of chlorosulfonic acid and stirred at 15 0 for 20 hours. Finally, the temperature is maintained at 50 0 for another 1/2 hour and the solution is decomposed in cold water. Instead of chlorosulfonic acid, concentrated sulfuric acid can also be used in the same proportions and at the same temperatures. This measure only results in condensation and not sulphonation.
The deposited dye is filtered, washed neutral with 10% sodium chloride solution and dried. He dyes wool and silk in blue-gray to deep black tones.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE157245X | 1930-02-07 | ||
CH153489T | 1933-11-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH157245A true CH157245A (en) | 1932-09-15 |
Family
ID=25716223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH157245D CH157245A (en) | 1930-02-07 | 1931-02-04 | Process for the preparation of an acidic dye of the anthraquinone series. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH157245A (en) |
-
1931
- 1931-02-04 CH CH157245D patent/CH157245A/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH157245A (en) | Process for the preparation of an acidic dye of the anthraquinone series. | |
DE553001C (en) | Process for the preparation of acidic wool dyes | |
DE952657C (en) | Process for the production of sulfur dyes of the phthalocyanine series | |
DE353221C (en) | Process for the preparation of a green pigment | |
DE633522C (en) | Process for the preparation of indigoid dyes | |
CH157241A (en) | Process for the preparation of an acidic dye of the anthraquinone series. | |
DE491427C (en) | Process for the production of Kuepen dyes of the pyrazolanthrone series | |
DE481450C (en) | Process for the preparation of nitrogenous cow dyes | |
DE465507C (en) | Process for the production of post-chromable dyes of the triarylmethane series | |
DE393268C (en) | Process for the representation of gray Kuepen colors | |
DE737942C (en) | Process for the production of phthalocyanines | |
CH120716A (en) | Process for the preparation of isodibenzanthrone. | |
CH198893A (en) | Process for the production of a sulfur dye. | |
CH173744A (en) | Process for the production of a vat dye. | |
CH175881A (en) | Process for the preparation of a substantive copper-containing azo dye. | |
CH153489A (en) | Process for the preparation of an acidic dye of the anthraquinone series. | |
CH367918A (en) | Process for the production of sulfur dyes of the phthalocyanine series | |
CH148996A (en) | Process for the production of an etch-resistant dye of the gallocyanin series. | |
CH156316A (en) | Process for the production of a chromium-containing dye. | |
CH133699A (en) | Process for the preparation of dichloroisodibenzanthrone. | |
CH145046A (en) | Process for the preparation of a vat dye of the anthraquinone series. | |
CH157526A (en) | Process for the production of a new azo dye. | |
CH186559A (en) | Process for the preparation of a dye. | |
CH148995A (en) | Process for the production of an etch-resistant dye of the gallocyanin series. | |
DE1070762B (en) | PROCESS FOR THE PREPARATION OF GRAY SULFUR DYES OF THE PHTALOCYANINE SERIES |