CH148496A - Process for the preparation of a vat dye. - Google Patents
Process for the preparation of a vat dye.Info
- Publication number
- CH148496A CH148496A CH148496DA CH148496A CH 148496 A CH148496 A CH 148496A CH 148496D A CH148496D A CH 148496DA CH 148496 A CH148496 A CH 148496A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- dye
- vat
- vat dye
- sulfur
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
Verfahren zur Darstellung eines Köpenfarbstoffes. Es wurde gefunden, dass man einen wert vollen neuen Küpenfarbstoff erhält, wenn man 2,-.Xerkapto-l-methylanthraellinon, das aus 2-I-Ialogen-l-metliyl-anthrachincn durch Behandeln mit Seliwefelnatrium erhalten werden kann, mit Schwefel erhitzt.
Der neue Farbstoff löst sich in konzen trierter Schwefelsäure mit rotvioletter Farbe, liefert eine olivefarbene Küpe und färbt Baumwolle in klaren orangegelben Tönen von ,Mlosser Echtheit.
<I>Beispiel:</I> <B>1</B> Teil 2-Merkapto-l-methylanthrachinon, (las aus -)-Chlor-l-methylanthrachiiion durch Behandeln mit Schwefelnatrium erhalten #verden kann, wird mit 4 Teilen Schwefel ge- miseht und<B>3</B> bis 4 Stunden lang bei zirka -)50 bis<B>260' C</B> verschmolzen. Die fertige Schmelze wird zur Entfernung des über schüssigen Schwefels mit Schwefelnatrium- lösung ausgekocht. Der zurückbleibende Farbstoff wird aus Schwefelsäure umgelöst und durch Behandeln mit Natriumhypochlo- ritlösung gereinigt.
Chemisch rein wird er durch Kristallisation aus hochsiedenden or ganischen Lösungsmitteln, zum Beispiel Tri- chlorbenzol oder Nitrobenzol, erhalten.
Process for the preparation of a woolen dye. It has been found that a valuable new vat dye is obtained if 2-Xerkapto-1-methylanthraellinone, which can be obtained from 2-I-halogen-1-methyl-anthraquinone by treatment with sodium sulfate, is heated with sulfur.
The new dye dissolves in concentrated sulfuric acid with a red-violet color, provides an olive-colored vat and dyes cotton in clear orange-yellow shades of Mlosser authenticity.
<I> Example: </I> <B> 1 </B> Part 2-Mercapto-l-methylanthraquinone, (read from -) - Chlor-l-methylanthraquinone can be obtained #verden by treatment with sodium sulphide, is with 4 parts The sulfur is mixed and fused for <B> 3 </B> to 4 hours at about -) 50 to <B> 260 'C </B>. The finished melt is boiled with a sodium sulphide solution to remove the excess sulfur. The remaining dye is redissolved from sulfuric acid and cleaned by treatment with sodium hypochlorite solution.
It is obtained chemically pure by crystallization from high-boiling organic solvents, for example trichlorobenzene or nitrobenzene.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE148496X | 1929-05-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH148496A true CH148496A (en) | 1931-07-31 |
Family
ID=5672738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH148496D CH148496A (en) | 1929-05-14 | 1930-04-14 | Process for the preparation of a vat dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH148496A (en) |
-
1930
- 1930-04-14 CH CH148496D patent/CH148496A/en unknown
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