CH293911A - Process for the production of a vat dye. - Google Patents
Process for the production of a vat dye.Info
- Publication number
- CH293911A CH293911A CH293911DA CH293911A CH 293911 A CH293911 A CH 293911A CH 293911D A CH293911D A CH 293911DA CH 293911 A CH293911 A CH 293911A
- Authority
- CH
- Switzerland
- Prior art keywords
- carboxylic acid
- acid
- production
- bromo
- amino
- 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
- C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
- C09B1/16—Amino-anthraquinones
- C09B1/20—Preparation from starting materials already containing the anthracene nucleus
- C09B1/36—Dyes with acylated amino groups
- C09B1/42—Dyes with acylated amino groups the acyl groups being residues of an aromatic carboxylic acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Küpenfarbstoffes. Es wurde gefunden, dass ein wertvoller Küpenfarbstoff hergestellt werden kann, wenn man ein Gemisch von 1-Amino-4-benzoylamino- 6- und -7-brom-anthraehinon mit einem funk- ; tioneen Derivat der in 4-Stellung durch eine N-Dimethylsulfamidgruppe substituier ten Benzol-l-earbonsäure umsetzt..
Der neue Farbstoff löst sich in konz. Schwefelsäure mit blauroter Farbe und färbt Baumwolle aus violetter Küpe in echten blau stichigroten Tönen.
Als funktionelles Derivat der genannten Carbonsäure kann mit Vorteil ein Säurehalo genid, beispielsweise das Säurechlorid, verwen det werden. Die Umsetzung kann beispiels weise in einem indifferenten Lösungsmittel, vorzugsweise von relativ hohem Siedepunkt, wie Mono-, Di- oder Triehlorbenzol, vorgenom men werden, wobei vorteilhaft bei erhöhter Temperatur gearbeitet wird.
<I>Beispiel:</I> 23 Teile p-Sulfodimethylamidobenzoesäure werden in 280 Teilen trockenem Nitrobenzol verteilt und nach Zufügen von 16 Teilen Thio- 5 nylehlorid und 0,5 Teilen Pyridin anderthalb Stunden bei 80 bis 90 verrührt. Hierauf fügt man 42 Teile einer Mischung aus 1-Amino-4- benzoylamirio-6-brom- und 1-Amino-4-benzoyl- amino-7-brom-anthrachinon hinzu und rührt n noch weitere zwei Stunden bei 120 bis 130 .
Beim Erkalten fällt der Farbstoff als rotes, kristallines Pulver aus, welches abgesaugt, gut mit Nitrobenzol und kochendem Alkohol ge waschen und getrocknet wird.
Das oben erwähnte Gemisch aus 1-Amino- 4-benzoyjamino-6-brom- und 1-Amino-4-ben- zoylamino-7-brom-anthrachinon kann zum Bei spiel durch Monobenzoylierung von 1,4-Di- amino-6-brom-anthrachinon dargestellt wer den.
Process for the production of a vat dye. It has been found that a valuable vat dye can be produced if a mixture of 1-amino-4-benzoylamino-6- and -7-bromo-anthraehinone with a funk-; tioneen derivative of the benzene-1-carboxylic acid substituted in the 4-position by an N-dimethylsulfamide group ..
The new dye dissolves in conc. Sulfuric acid with a blue-red color and dyes cotton from a violet vat in real blue tinge-red tones.
An acid halide, for example the acid chloride, can advantageously be used as the functional derivative of the carboxylic acid mentioned. The reaction can, for example, be carried out in an inert solvent, preferably of a relatively high boiling point, such as mono-, di- or trihlobenzene, advantageously at elevated temperature.
<I> Example: </I> 23 parts of p-sulfodimethylamidobenzoic acid are distributed in 280 parts of dry nitrobenzene and, after adding 16 parts of thionyl chloride and 0.5 part of pyridine, the mixture is stirred at 80 to 90 for one and a half hours. 42 parts of a mixture of 1-amino-4-benzoylamirio-6-bromo- and 1-amino-4-benzoylamino-7-bromo-anthraquinone are then added and the mixture is stirred at 120 to 130 for a further two hours.
On cooling, the dye precipitates out as a red, crystalline powder, which is filtered off with suction, washed well with nitrobenzene and boiling alcohol and dried.
The above-mentioned mixture of 1-amino-4-benzoyjamino-6-bromo- and 1-amino-4-benzoylamino-7-bromo-anthraquinone can, for example, by monobenzoylation of 1,4-di-amino-6- bromo-anthraquinone are represented.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH252533T | 1944-08-03 | ||
CH293911T | 1946-07-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH293911A true CH293911A (en) | 1953-10-15 |
Family
ID=25729671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH293911D CH293911A (en) | 1944-08-03 | 1946-07-11 | Process for the production of a vat dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH293911A (en) |
-
1946
- 1946-07-11 CH CH293911D patent/CH293911A/en unknown
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