CH133100A - Process for the production of a new chromium-containing azo dye. - Google Patents
Process for the production of a new chromium-containing azo dye.Info
- Publication number
- CH133100A CH133100A CH133100DA CH133100A CH 133100 A CH133100 A CH 133100A CH 133100D A CH133100D A CH 133100DA CH 133100 A CH133100 A CH 133100A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- production
- chromium
- containing azo
- azo dye
- 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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Coloring (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr. 130698. Verfahren zur Herstellung eines neuen chromhaltigen Azofarbstofffes. Es wurde gefunden, dass man einen neuen chromhaltigen Azofarbstoff erhält, wenn man das Natriumsalz des Farbstoffes aus diazo- tiertem 4-Chlor-2-aminophenol und 1-m-Sulf- amidophenyl=3-methyl-5-pyrazolon in Gegen wart von alkalischen Reduktionsmitteln unter Druck mit Chromhy droxydhydraten behandelt.
Der neue .Farbstoff stellt ein braunrotes Pul ver dar, welches sich in Wasser und ver dünnter Natronlauge mit rotoranger und in konzentrierter Schwefelsäure mit gelber Farbe löst. Wolle wird aus schwefelsaurem Bade echt rotorange gefärbt.
BeisViel 36 Teile kristallisiertes Schwefelnatrium, 46 Teile Chromhydroxydpaste mit 9,1% Crs0s,
60 Teile des Natriumsalzes des Farb stoffes aus diazotiertem 4-Chlor-2-aminophenol und 1-m-Sulfamidophenyl-3-methyl-5-pyra- zolon in Form einer Paste von 25% und 30 Teile Wasser werden innig vermischt und im geschlossenen Apparat 6 Stunden auf 115-1200 erhitzt.
Nach dem Erkalten wird in etwa 1000 Teilen Wasser heiss gelöst, von geringen Mengen Chromschlamm filtriert und ausgesalzen.
<B> Additional patent </B> to main patent no. 130698. Process for the production of a new chromium-containing azo dye. It has been found that a new chromium-containing azo dye is obtained if the sodium salt of the dye of diazotized 4-chloro-2-aminophenol and 1-m-sulfamidophenyl = 3-methyl-5-pyrazolone is used in the presence of alkaline substances Reducing agents treated with chromium hydroxide hydrates under pressure.
The new dye is a brownish-red powder which dissolves in water and dilute sodium hydroxide solution with red-orange color and in concentrated sulfuric acid with a yellow color. Wool is dyed really red-orange from sulfuric acid bath.
BeisViel 36 parts of crystallized sodium sulphide, 46 parts of chromium hydroxide paste with 9.1% Crs0s,
60 parts of the sodium salt of the dye from diazotized 4-chloro-2-aminophenol and 1-m-sulfamidophenyl-3-methyl-5-pyrazolone in the form of a paste of 25% and 30 parts of water are mixed intimately and in the closed apparatus Heated to 115-1200 for 6 hours.
After cooling, it is dissolved in about 1000 parts of hot water, small amounts of chrome sludge are filtered off and salted out.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH130698T | 1927-08-13 | ||
CH133100T | 1927-08-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH133100A true CH133100A (en) | 1929-05-15 |
Family
ID=25711487
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH133100D CH133100A (en) | 1927-08-13 | 1927-08-13 | Process for the production of a new chromium-containing azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH133100A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2673201A (en) * | 1954-03-23 | Cobaltiferous azo-dyestuffs |
-
1927
- 1927-08-13 CH CH133100D patent/CH133100A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2673201A (en) * | 1954-03-23 | Cobaltiferous azo-dyestuffs |
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