CH146266A - Process for the preparation of a vat dye. - Google Patents
Process for the preparation of a vat dye.Info
- Publication number
- CH146266A CH146266A CH146266DA CH146266A CH 146266 A CH146266 A CH 146266A CH 146266D A CH146266D A CH 146266DA CH 146266 A CH146266 A CH 146266A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- vat dye
- vat
- dye
- violet
- 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
- C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
- C09B5/24—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position
- C09B5/34—Anthraquinone acridones or thioxanthrones
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung eines Küpenfarbstoffes. Es wurde gefunden, dass man einen wert- Zollen Farbstoff erhalten kann, wenn man den nach dem Verfahren der schweizerischen Patentschrift Nr. 1.43399 erhaltenen Küpen- farbstoff mit verseifenden Mitteln behandelt.
Der erhaltene Farbstoff liefert eine vio= lette Küpe und färbt hieraus Baumwolle in violetten Tönen, die beim Verhängen an der Luft in ein sehr grünstichiges Blau über gehen. <I>Beispiel:</I> Man trägt 1 Teil des nach dem Verfah ren der schweizerischen Patentschrift Nr. 143399 erhaltenen Reaktionsproduktes in etwa 10 Teile konlentrierte Schwefelsäure ein und erwärmt die Lösung eine kurze Zeit lang auf etwa 80 C.
Darnach giesst man die Schwefelsäurelösung in Wasser und kann den in grünblauen Flocken ausgeschiedenen Farbstoff nach dem Filtrieren und Auswa schen der Schwefelsäure ohne weiteres zum Färben verwenden.
Process for the preparation of a vat dye. It has been found that a valuable dyestuff can be obtained if the vat dyestuff obtained by the process of Swiss Patent No. 1.43399 is treated with saponifying agents.
The dye obtained provides a violet vat from which it dyes cotton in violet tones which, when hung in the air, turn into a very greenish blue. <I> Example: </I> 1 part of the reaction product obtained by the process of Swiss patent specification No. 143399 is introduced into about 10 parts of concentrated sulfuric acid and the solution is heated to about 80 ° C. for a short time.
The sulfuric acid solution is then poured into water and the dye which has separated out in green-blue flakes can be used for dyeing after filtering and washing out the sulfuric acid.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH146266T | 1929-05-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH146266A true CH146266A (en) | 1931-04-15 |
Family
ID=4402450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH146266D CH146266A (en) | 1929-05-21 | 1929-05-21 | Process for the preparation of a vat dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH146266A (en) |
-
1929
- 1929-05-21 CH CH146266D patent/CH146266A/en unknown
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