CH161744A - Process for the production of a new dye of the dibenzanthrone series. - Google Patents
Process for the production of a new dye of the dibenzanthrone series.Info
- Publication number
- CH161744A CH161744A CH161744DA CH161744A CH 161744 A CH161744 A CH 161744A CH 161744D A CH161744D A CH 161744DA CH 161744 A CH161744 A CH 161744A
- Authority
- CH
- Switzerland
- Prior art keywords
- blue
- dye
- production
- new dye
- water
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
- C09B3/22—Dibenzanthrones; Isodibenzanthrones
- C09B3/30—Preparation from starting materials already containing the dibenzanthrone or isodibenzanthrone nucleus
- C09B3/32—Preparation from starting materials already containing the dibenzanthrone or isodibenzanthrone nucleus by halogenation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. l.51330. Verfahren zur Herstellung eines neuen Farbstoffes der Bibenzanthronreihe. Im Hauptpatent Nr. 151330 ist gezeigt worden, dass man durch Bromieren des wasser- tropfechten chlorierten Dibenzanthrotts des Patentes Nr. 119986 unter bestimmten Be dingungen einen neuen, wertvollen Farbstoff erhält.
Es wurde nun gefunden, dass die Cber- tragung desselben Bromierungsverfahrens auf das wassertropfechte chlorierte Isodibenzan- thron des Patentes Nr.<B>146267</B> bezw. dessen Zusatz 149618 ebenfalls zu einem wertvollen Farbstoff führt.
Die Bromierung findet zweck mässig in Chlorsulfonsäure und in Gegenwart eines Überträgers bei Tenrper-a4.urert unter <B>1000</B> mit der für die Bildung eines Dibrom- derivates genügenden Menge Brom statt. Als Katalysatoren können Jod, Schwefel, Antimon usw. verwendet werden.
Der neue Farbstoff ist ein violettstichiges Pulver; den Analysenzahlen nach liegt ein Tetraehlordibromisodibenzanthron vor. In konzentrierter Schwefelsäure löst sich der Farbstoff stumpf oliv; beim Eingiessen dieser Lösung in Wasser fallen rötlichblaue Flocken . aus.
In siedendem Toluol und Nitrobenzol löst er sich blauviolett mit schwach bräun licher Fluoreszenz und in siedendem Anilin violettblau. Der Fgrbstoff färbt Baumwolle aus blaugrüner Küpe in rötlichblauen, Wasser- tropfechten Tönen.
Beispiel: 20 Teile des nach dem Patent 146267 bezw. dessen Zusatz 149618 erhältlichen Te- trachlorisodibenzanthronswerden unterRühren und Kühlen bei gewöhnlicher Temperatur in 200 Teilen Ohlorsttlfonsäure gelöst; hierauf werden bei gleicher Temperatur 1 Teil Jod zugegeben und weiter 12 Teile Brom zu tropfen gelassen. Das Reaktionsgemisch wird dann auf 55 erwärmt und bis zum Ver schwinden des Broms bei 55-60 gehalten. Nach dem Erkalten versetzt man die Reak tionsflüssigkeit mit 400 Teilen konzentrierter Schwefelsäure, giesst auf Eis und isoliert dann den neuen Farbstoff in üblicher Weise.
Additional patent to the main patent No. 1.51330. Process for the production of a new dye of the bibenzanthrone series. In the main patent No. 151330 it was shown that, under certain conditions, a new, valuable dye can be obtained by brominating the water-dropping, chlorinated dibenzanthrot of patent No. 119986.
It has now been found that the transfer of the same bromination process to the water-drop-proof chlorinated isodibenzanthrone of patent no. 146267 and / or patent no. the addition of 149618 also leads to a valuable dye.
The bromination expediently takes place in chlorosulfonic acid and in the presence of a carrier at Tenrper-a4.urert under <B> 1000 </B> with the amount of bromine sufficient for the formation of a dibromo derivative. Iodine, sulfur, antimony, etc. can be used as catalysts.
The new dye is a purple-tinged powder; According to the analytical figures, a tetraehlordibromisodibenzanthrone is present. In concentrated sulfuric acid, the dye dissolves dull olive; when this solution is poured into water, reddish-blue flakes fall. out.
In boiling toluene and nitrobenzene it dissolves blue-violet with slightly brownish fluorescence and in boiling aniline violet-blue. The dye dyes cotton from a blue-green vat in reddish-blue, water-resistant tones.
Example: 20 parts of the respectively according to patent 146267. the addition of 149618 available tetrachloroisodibenzanthrons are dissolved in 200 parts of chlorofluoric acid with stirring and cooling at ordinary temperature; 1 part of iodine is then added at the same temperature and a further 12 parts of bromine are allowed to drip. The reaction mixture is then warmed to 55 and held at 55-60 until the bromine has disappeared. After cooling, the reaction liquid is mixed with 400 parts of concentrated sulfuric acid, poured onto ice and the new dye is then isolated in the usual way.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH151330T | 1932-05-27 | ||
CH161744T | 1932-05-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH161744A true CH161744A (en) | 1933-05-15 |
Family
ID=25715797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH161744D CH161744A (en) | 1932-05-27 | 1932-05-27 | Process for the production of a new dye of the dibenzanthrone series. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH161744A (en) |
-
1932
- 1932-05-27 CH CH161744D patent/CH161744A/en unknown
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