CH106555A - Process for the production of a new vat dye. - Google Patents
Process for the production of a new vat dye.Info
- Publication number
- CH106555A CH106555A CH106555DA CH106555A CH 106555 A CH106555 A CH 106555A CH 106555D A CH106555D A CH 106555DA CH 106555 A CH106555 A CH 106555A
- Authority
- CH
- Switzerland
- Prior art keywords
- production
- new
- vat dye
- dye
- new vat
- 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
- C09B7/00—Indigoid dyes
- C09B7/02—Bis-indole indigos
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
Description
Verfahren zur Herstellung von einem neuen Nüpenfarbstoff. Es wurde gefunden, dass man einen neuen Küpenfarbstoff erhält, wenn man 2.1-Naphthindoxyl mit 5.7-Dibrom.isatin kondensiert.
Der neue Farbstoff stellt ein bräunliches Pulver dar, das sich in Schwefelsäure mit blauer Farbe löst. Er bildet eine grüngelbe Küpe und färbt Baumwolle in oliven Tönen von sehr guter Echtheit.
Beispiel: 188 Teile 2.1-Naphthindoxyl und 305 Teile 5. 7-Dibromisatin werden in 4000 Tei len Alkohol suspendiert und nach Beigabe von 5 Teilen konzentriertem Ammoniak zum Sieden erhitzt. Nach mehrstündigem Kochen ist die Kondensation beendigt. Der in guter Ausbeute abgeschiedene Farbstoff wird fil triert, gewaschen und getrocknet.
Process for the production of a new pebble dye. It has been found that a new vat dye is obtained if 2.1-naphthindoxyl is condensed with 5.7-dibromo-isatin.
The new dye is a brownish powder that dissolves in sulfuric acid with a blue color. It forms a greenish-yellow vat and dyes cotton in olive tones with very good fastness.
Example: 188 parts of 2.1-naphthindoxyl and 305 parts of 5. 7-dibromoisatin are suspended in 4000 parts of alcohol and, after adding 5 parts of concentrated ammonia, heated to the boil. After several hours of boiling, the condensation has ended. The dye deposited in good yield is filtered off, washed and dried.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH106555T | 1923-06-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH106555A true CH106555A (en) | 1924-09-01 |
Family
ID=4365441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH106555D CH106555A (en) | 1923-06-28 | 1923-06-12 | Process for the production of a new vat dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH106555A (en) |
-
1923
- 1923-06-12 CH CH106555D patent/CH106555A/en unknown
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