AT97918B - Process for the preparation of indigoid dyes. - Google Patents
Process for the preparation of indigoid dyes.Info
- Publication number
- AT97918B AT97918B AT97918DA AT97918B AT 97918 B AT97918 B AT 97918B AT 97918D A AT97918D A AT 97918DA AT 97918 B AT97918 B AT 97918B
- Authority
- AT
- Austria
- Prior art keywords
- preparation
- dyes
- indigoid dyes
- indigoid
- desc
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Darstellung indigoider Farbstoffe.
In der österr. Patentschrift Nr. 53220 sind Farbstoffe beschrieben, die durch Kuppeln der reaktionsfähigen a-Derivate von Naphtisatinen mit a-Naphtol bzw. < x-AnthroI und ihren in Orthostellung nicht substituierten Abkömmlingen erhalten werden.
Es wurde nun gefunden, dass diese Farbstoffe, zweckmässig in einem geeigneten Verdünnungsmittel suspendiert, durch Einwirkung von Sulfurylchlorid sich glatt chlorieren lassen, wobei das Chlor nur in den Naphtol-bzw. Anthrolrest eintritt. Dies ist insofern überraschend, da Naphtisatin selbst sehr leicht durch Halogenierungsmittel angegriffen wird. Man erhält auf diese Weise neue Farbstoffe, die sich von den Ausgangsfarbstoffen durch erhebliche Vertiefung der Nuancen nach Schwarz hin, sowie eine erhöhte Koehechtheit auszeichnen.
Beispiel : 37-3 Gewichtsteile des Farbstoffs aus ss-Naphtisatin- < x-Chlorid und a-Anthrol werden in 500 Gewichtsteilen Chlorbenzol suspendiert und unter Rühren und Kühlen allmählich mit 14 Gewiehtsteilen Sulfurylchlorid versetzt. Nach beendetem Eintragen steigert man die Temperatur auf 70 .
Unter lebhafter Entwicklung von schwefliger Säure und Salzsäure findet die Chlorierung statt. Nach beendeter Reaktion lässt man abkühler und scheidet den Farbstoff wie üblich ab.
Er bildet ein blauschwarzes kupferglänzendes Kristallpulver, das sich in konzentrierter Schwefelsäure mit schieferblauer Farbe löst. Mit alkalischer Hydrosulfitlösung gibt er eine orangebraune Küpe, aus der die Textilfaser in tiefen blauschwarzen Tönen gefärbt wird.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the preparation of indigoid dyes.
Austrian Patent No. 53220 describes dyes which are obtained by coupling the reactive a-derivatives of naphthisatins with a-naphthol or <x -anthroI and their derivatives that are not substituted in the ortho position.
It has now been found that these dyes, expediently suspended in a suitable diluent, can be chlorinated smoothly by the action of sulfuryl chloride, the chlorine only in the naphthol or. Anthrol residue occurs. This is surprising insofar as naphtisatin itself is very easily attacked by halogenating agents. In this way, new dyes are obtained which are distinguished from the original dyes by a considerable deepening of the nuances towards black, as well as increased cohesiveness.
Example: 37-3 parts by weight of the dye composed of ß-naphtisatin chloride and α-anthrole are suspended in 500 parts by weight of chlorobenzene and 14 parts by weight of sulfuryl chloride are gradually added while stirring and cooling. When the entry is complete, the temperature is increased to 70.
The chlorination takes place with vigorous development of sulphurous acid and hydrochloric acid. After the reaction has ended, the mixture is left to cool and the dye is separated off as usual.
It forms a blue-black shiny copper crystal powder that dissolves in concentrated sulfuric acid with a slate-blue color. With an alkaline hydrosulphite solution he gives an orange-brown vat from which the textile fiber is dyed in deep blue-black tones.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE97918X | 1922-10-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT97918B true AT97918B (en) | 1924-09-25 |
Family
ID=5646572
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT97918D AT97918B (en) | 1922-10-19 | 1923-07-27 | Process for the preparation of indigoid dyes. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT97918B (en) |
-
1923
- 1923-07-27 AT AT97918D patent/AT97918B/en active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AT97918B (en) | Process for the preparation of indigoid dyes. | |
DE414537C (en) | Process for the preparation of indigoid dyes | |
CH105722A (en) | Process for the preparation of an indigoid dye. | |
DE542176C (en) | Process for the preparation of indigoid dyes | |
DE628725C (en) | Process for the production of Kuepen dyes | |
DE69228C (en) | Process for the preparation of a purple-black dye from ßi-amido-cti naphthol monosulfonic acid | |
DE436539C (en) | Process for the preparation of acidic wool dyes of the anthraquinone series | |
AT32207B (en) | Process for the preparation of tri- and tetrabromo derivatives of indigo. | |
DE445443C (en) | Process for the production of indigoid dyes | |
AT109698B (en) | Process for the preparation of indigoid dyes. | |
DE453718C (en) | Process for the preparation of 5íñ5íñ6íñ6-tetrahalo-4íñ4-dimethylthioindigos | |
AT119495B (en) | Process for the preparation of perylenetetracarboxylic anhydride. | |
DE628229C (en) | Process for the production of chlorine-containing dyes | |
DE508108C (en) | Process for the preparation of Kuepen dyes of the pyranthrone series | |
AT109981B (en) | Process for the preparation of vat dyes of the anthraquinone series. | |
DE601721C (en) | Process for the preparation of dyes of the thioindigo series | |
AT33279B (en) | Process for the preparation of bromine derivatives of β-naphthylindigo. | |
AT33317B (en) | Process for the preparation of mono- and dibromo derivatives of indigo. | |
DE479611C (en) | Process for the production of chlorine substitution products of isoviolanthrone | |
DE514433C (en) | Process for the production of green dyes of the benzanthrone series | |
DE58197C (en) | Process for the preparation of sulfonic acids of a red basic naphthalene dye | |
CH185953A (en) | Process for the production of a new anthraquinone vat dye. | |
CH122072A (en) | Process for the preparation of a quinone vat dye which stains violet blue. | |
CH145337A (en) | Process for the preparation of a vat dye containing chlorine and bromine. | |
CH128650A (en) | Process for the preparation of 4.5.4'.5'-tetramethyl-6.6'-dichlorothioindigo. |