CH119888A - Process for the production of a new dye. - Google Patents
Process for the production of a new dye.Info
- Publication number
- CH119888A CH119888A CH119888DA CH119888A CH 119888 A CH119888 A CH 119888A CH 119888D A CH119888D A CH 119888DA CH 119888 A CH119888 A CH 119888A
- Authority
- CH
- Switzerland
- Prior art keywords
- black
- production
- new dye
- 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
- 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)
- Coloring (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr. 115111. Verfahren zur Herstellung eines neuen Farbstoffes. Es wurde gefunden, dass man einen neuen Farbstoff erhält, wenn man den Azofarb- stoff aus diazotierter 6-Nitro-2-aminophenol- 4-sulfosäure und ss-Naphthol mit Chrom acetat behandelt.
Der neue Farbstoff bil det ein schwarzes Pulver, löst sich in Was ser mit rotviolettschwarzer, in 10 %iger Na tronlauge mit violettschwarzer Farbe und färbt Wolle aus schwefelsaurem Bade in rotstichig schwarzen Tönen mit vorzüglichen Echtheitseigenschaften.
<I>Beispiel:</I> 41,1 Teile des Natronsalzes des Farb stoffes aus diazotierter 6 - Nitro - 2 - amino- phenol-4-sulfosäure und ss-Naphthol werden in 400 Teilen Wasser kochend gelöst. Hier auf gibt man eine Chromacetatlösung ent sprechend 15,2 Teilen Cr203 hinzu. Das Ge misch wird längere Zeit rückfliessend ge- locht und hierauf durch Filtration von etwa vorhandenem Chromschlamm getrennt. Durch Aussalzen oder Eindampfen wird der Farbstoff gewonnen.
<B> Additional patent </B> to main patent no. 115111. Process for the production of a new dye. It has been found that a new dye is obtained if the azo dye from diazotized 6-nitro-2-aminophenol-4-sulfonic acid and β-naphthol is treated with chromium acetate.
The new dye forms a black powder, dissolves in water with red-violet-black, in 10% sodium hydroxide solution with a violet-black color, and dyes wool from sulfuric acid baths in red-tinged black shades with excellent fastness properties.
<I> Example: </I> 41.1 parts of the sodium salt of the dye from diazotized 6 - nitro - 2 - aminophenol-4-sulfonic acid and ß-naphthol are dissolved in 400 parts of boiling water. Here, a chromium acetate solution corresponding to 15.2 parts of Cr203 is added. The mixture is refluxed for a long time and then separated by filtration from any chrome sludge that may be present. The dye is obtained by salting out or evaporating.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH119888T | 1925-02-16 | ||
CH115111T | 1926-06-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH119888A true CH119888A (en) | 1927-04-16 |
Family
ID=25708457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH119888D CH119888A (en) | 1925-02-16 | 1925-02-16 | Process for the production of a new dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH119888A (en) |
-
1925
- 1925-02-16 CH CH119888D patent/CH119888A/en unknown
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