CH157241A - 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
- CH157241A CH157241A CH157241DA CH157241A CH 157241 A CH157241 A CH 157241A CH 157241D A CH157241D A CH 157241DA CH 157241 A CH157241 A CH 157241A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- acidic dye
- amino
- anthraquinone series
- dye
- Prior art date
Links
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung eines sauren Farbstoffes der Anthraehinonreihe. Gegenstand dieses Zusatzpatentes ist ein Verfahren zur Darstellung eines sauren Farb stoffes der Anthrachinonreihe, welches dadurch gekennzeichnet ist, dass man 4'-Amino-di- plrerrylmetharr-2-carbonsäure mit 1-Amino-4- bromarrthrachinon-2-sulfosäure in Form ihrer Natriumsalze in wässeriger Lösung und in Gegenwart einer geringen Menge von Kupfer chlorür kondensiert.
<I>Beispiel:</I> Eine Lösung von 50 Gewichtsteilen 4'- Amirro-diphenylmetharr-2-carbonsäure (erhält lich aus 4-Chlorbenzoyl-o-benzoesäure durch Umsetzung mit Ammoniak gemäss D. R. P.
234917 und darauffolgende Reduktion) in 750 Gewichtsteilen Wasser und 38 Cxewichtsteilen Soda wird mit 60 Gewichtsteilen 1-Amino- 4-bromanthrachinon-2-sulfosaurem Natrium und 2,5 Gewichtsteilen Kupferchlorür versetzt: Die Mischung färbt sich bereits nach 1/2stün- digem schwachem Sieden rein blau und wird zur Beendigung der Kondensation noch 6 Stunden unter Rückfluss erwärmt. Der Farb stoff wird, in der üblichen Weise isoliert und gereinigt, als blaues, kristallinisches Pulver erhalten. Er färbt Wolle und Seide in klaren, rein grünstichig blauen Tönen.
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-di- plrerrylmetharr-2-carboxylic acid with 1-amino-4-bromoarrthraquinone-2-sulfonic acid in the form of its sodium salts condensed in aqueous solution and in the presence of a small amount of copper chlorine.
<I> Example: </I> A solution of 50 parts by weight of 4'-amirro-diphenylmethar-2-carboxylic acid (obtainable from 4-chlorobenzoyl-o-benzoic acid by reaction with ammonia according to D. R. P.
234917 and subsequent reduction) in 750 parts by weight of water and 38 parts by weight of soda are mixed with 60 parts by weight of sodium 1-amino-4-bromoanthraquinone-2-sulfonic acid and 2.5 parts by weight of copper chloride: the mixture changes color after only 1/2 hour of low boiling pure blue and is refluxed for a further 6 hours to end the condensation. The dye is isolated and purified in the usual way, obtained as a blue, crystalline powder. He dyes wool and silk in clear, purely greenish blue tones.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE157241X | 1930-02-06 | ||
CH153489T | 1933-11-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH157241A true CH157241A (en) | 1932-09-15 |
Family
ID=25716219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH157241D CH157241A (en) | 1930-02-06 | 1931-02-04 | Process for the preparation of an acidic dye of the anthraquinone series. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH157241A (en) |
-
1931
- 1931-02-04 CH CH157241D patent/CH157241A/en unknown
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