CH117483A - Process for the preparation of a vat dye. - Google Patents
Process for the preparation of a vat dye.Info
- Publication number
- CH117483A CH117483A CH117483DA CH117483A CH 117483 A CH117483 A CH 117483A CH 117483D A CH117483D A CH 117483DA CH 117483 A CH117483 A CH 117483A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- vat
- orange
- vat dye
- dye
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
Verfahren zur Darstellung eines Küpenfarbstoffes. Gegenstand dieses Zusatzpatentes ist ein Verfahren zur Darstellung eines Küpenfarb- stoffes aus 1-Oxynaphthalin-3.4-phenazin und 1. 4-Naphthochinon. Beispiel: 123 Teile 1-Oxynaphthalin-3. 4-phenazin und 80 Teile 1. 4-Naphthochinon werden bis zur Beendigung der Kondensation in 8000 Teilen Nitrobenzol auf 140 bis<B>150'</B> erhitzt.
Das erhaltene Kondensationsprodukt besteht aus einem Gemisch von gelbem Farbstoff und seiner grünen Dihydroverbindung. Durch nachträgliche Behandlung mit Chlorlauge wird es in eine rein gelbe Farbstoffpaste übergeführt, die aus orangeroter Küpe die tierische und pflanzliche Faser in schönen, grünstickig gelben Tönen von bemerkenswer ten Echtheitseigenschaften anfärbt. Der Farbstoff löst sich in konzentrierter Schwe felsäure mit orangeroter Farbe.
Process for the preparation of a vat dye. The subject of this additional patent is a process for the preparation of a vat dye made from 1-oxynaphthalene-3,4-phenazine and 1,4-naphthoquinone. Example: 123 parts of 1-oxynaphthalene-3. 4-phenazine and 80 parts of 1,4-naphthoquinone are heated to 140 to 150 'in 8000 parts of nitrobenzene until the condensation has ended.
The condensation product obtained consists of a mixture of yellow dye and its green dihydro compound. Subsequent treatment with chlorine lye transforms it into a pure yellow dye paste which, from the orange-red vat, dyes the animal and vegetable fibers in beautiful, greenish-yellow tones with remarkable fastness properties. The dye dissolves in concentrated sulfuric acid with an orange-red color.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE117483X | 1924-02-16 | ||
CH113919T | 1926-02-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH117483A true CH117483A (en) | 1926-11-16 |
Family
ID=25708246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH117483D CH117483A (en) | 1924-02-16 | 1925-02-11 | Process for the preparation of a vat dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH117483A (en) |
-
1925
- 1925-02-11 CH CH117483D patent/CH117483A/en unknown
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