CH239161A - Process for the preparation of a green chromating dye. - Google Patents
Process for the preparation of a green chromating dye.Info
- Publication number
- CH239161A CH239161A CH239161DA CH239161A CH 239161 A CH239161 A CH 239161A CH 239161D A CH239161D A CH 239161DA CH 239161 A CH239161 A CH 239161A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- green
- preparation
- red
- parts
- 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
- C09B45/00—Complex metal compounds of azo dyes
- C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
- C09B45/14—Monoazo compounds
- C09B45/16—Monoazo compounds containing chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Description
Verfahren zur Darstellung eines grünen Ühromierungsfarbstoffes. .Es wurde gefunden, dass man einen neuen, wertvollen, chromierbaren Farbstoff erhält, wenn man diazotierte 5-Chlor-2-aminophenol- 4-phenyiketon-3'-sulfonsäure mit 2-Amino- naphthalin-3-carbonsäure kuppelt. Der Farb stoff färbt Wolle aus saurem Bade in roten, nachchromiert gelbgrünen Tönen. Die egalen Färbungen besitzen sehr gute Walk-, Alkali- und Lichtechtheit.
2-aminonaphthalin-3-carbonsaurem Natrium in 300 Teilen Wasser fliessen. Man rührt so lange bei Zimmertemperatur, bis die Farb- stoffbildung beendet ist und fällt dann den Farbstoff durch Sättigen mit Kochsalz aus. Abgepresst und getrocknet stellt er ein orangebraunes Pulver dar, das sich in Wasser mit roter, in konzentrierter Schwefelsäure mit violettroter Farbe löst.
<I>Beispiel:</I> 32,7 Teile 5 - Chlor - 2 - aminophenol - 4 - phenylketon-3'-sulfonsäure werden in 150 Teilen Wasser mit 5,4 Teilen wasserfreier Soda. neutral gelöst, mit 6,9 Teilen Natrium nitrit versetzt und die klare Lösung in 13 Teile konzentrierte Salzsäure, die vorgängig mit 30 Teilen Wasser verdünnt wurden, ge gossen.
Nach Beendigung der Diazotierung neutralisiert man die überschüssige Säure mit Natriumbikarbonat und lässt dann die klare gelbe Lösung der Diazoverbindung unter Rühren in eine Lösung von 21,4 Teilen
Process for the preparation of a green chromating dye. It has been found that a new, valuable, chromable dye is obtained if diazotized 5-chloro-2-aminophenol-4-phenyiketone-3'-sulfonic acid is coupled with 2-amino-naphthalene-3-carboxylic acid. The dye dyes wool from an acid bath in red, chrome-plated yellow-green tones. The level dyeings have very good mill, alkali and lightfastness.
Sodium 2-aminonaphthalene-3-carboxylic acid flow in 300 parts of water. The mixture is stirred at room temperature until the formation of the dye has ended and the dye is then precipitated by saturation with sodium chloride. Pressed and dried, it is an orange-brown powder that dissolves in water with red, in concentrated sulfuric acid with purple-red color.
<I> Example: </I> 32.7 parts of 5 - chloro - 2 - aminophenol - 4 - phenylketone-3'-sulfonic acid are mixed with 5.4 parts of anhydrous soda in 150 parts of water. dissolved neutrally, 6.9 parts of sodium nitrite were added and the clear solution was poured into 13 parts of concentrated hydrochloric acid which had previously been diluted with 30 parts of water.
After the end of the diazotization, the excess acid is neutralized with sodium bicarbonate and the clear yellow solution of the diazo compound is then left in a solution of 21.4 parts with stirring
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH239161T | 1942-12-23 | ||
CH235770T | 1942-12-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH239161A true CH239161A (en) | 1945-09-15 |
Family
ID=25728048
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH239161D CH239161A (en) | 1942-12-23 | 1942-12-23 | Process for the preparation of a green chromating dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH239161A (en) |
-
1942
- 1942-12-23 CH CH239161D patent/CH239161A/en unknown
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