CH172575A - Process for the preparation of a chromium-containing azo dye. - Google Patents
Process for the preparation of a chromium-containing azo dye.Info
- Publication number
- CH172575A CH172575A CH172575DA CH172575A CH 172575 A CH172575 A CH 172575A CH 172575D A CH172575D A CH 172575DA CH 172575 A CH172575 A CH 172575A
- Authority
- CH
- Switzerland
- Prior art keywords
- chromium
- azo dye
- containing azo
- oxynaphthalene
- treatment
- 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
- C09B45/01—Complex metal compounds of azo dyes characterised by the method of metallisation
-
- 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
Zusatzpatent zum Hauptpatent Nr. 169693. Verfahren zur Herstellung eines chromhaltigen Azofarbstofes. Es wurde gefunden, dass man aus der Chromverbindung des Azofarbstoffes aus diazo- tierter 1-Amino-2-oxynaphthaliri-4-sulfonsäure und 1-Oxynaphthalin, die auf die chromier- bare Gruppe des Farbstoffmoleküls ein Atom Chrom enthält, durch Behandeln mit alka lischen Mitteln einen - neuen chromhaltigen Azofarbstoff herstellen kann,
wenn diese Be handlung durch mehrstündiges Kochen erfolgt.
Der erhaltene chromhaltige Azofarbstoff stellt ein in Wasser leicht lösliches violett schwarzes Pulver dar und färbt Wolle aus schwefelsaurem oder organischsaurem-schwe- felsaurem Bade in marineblauen Tönen von vorzüglicher Echtheit.
<I>Beispiel:</I> In einem eisernen Kessel werden bei 60-70 41 Teile Ätznatron in 80 Teilen einer wässerigen Chromhydroxydpaste, die 7,6 Teile Or$0s enthält, gelöst; das Reak tionsgemisch wird hierauf mit 15 Teilen 1-Oxynaphthalin versetzt und auf<B>150</B> abge- kühlt. Hierauf fügt man 27,3 Teile diazo- tierte 1-Aniino-2-oxynaphthalin-4-sulfonsäure hinzu und erwärmt solange auf 40', bis die Diazoverbindung verschwanden ist. Man er hitzt dann auf<B>70-76'</B> und hält bei dieser Temperatur, bis der Farbstoff vollständig in seine Chromverbindung übergegangen ist.
Das Chromierungsgeinisch wird hierauf mit 1000 Teilen Wasser verdünnt und 6-8 Stunden rückfliessend gekocht. Die anfäng lich rotviolette Lösung färbt sich dabei blau violett. Nach dem Abkühlen auf 50-60 wird mit 10 /oiger Salzsäure neutralisiert, dann mit 3 Teilen Essigsäure angesäuert und nach Abfiltrieren von unlöslichen Anteilen im Vakuum zur Trockene verdampft.
Zu demselben Farbstoffe gelangt man, wenn statt Natronlauge andere alkalische Mittel, wie zum Beispiel Kalilauge, Soda, Pottache, Borax, Magnesiumoxyd, Ammoniak oder Trialkaliphosphat verwendet werden.
Die Behandlung der Chromverbindung mit den alkalischen Mitteln muss durch länger andauerndes lochen, offen oder unter Druck, und durch geeignete Wahl des alkalischen Mittels und der Alkalikonzentration erfolgen.
Additional patent to main patent no. 169693. Process for the production of a chromium-containing azo dye. It has been found that the chromium compound of the azo dye is made from diazo-tated 1-amino-2-oxynaphthalene-4-sulfonic acid and 1-oxynaphthalene, which contains an atom of chromium on the chromable group of the dye molecule, by treatment with alkali Agents - can produce a new chromium-containing azo dye,
if this treatment takes place by boiling for several hours.
The chromium-containing azo dye obtained is a violet-black powder that is readily soluble in water and dyes wool from sulfuric acid or organic acid-sulfuric acid bath in navy blue shades of excellent fastness.
<I> Example: </I> In an iron kettle, at 60-70, 41 parts of caustic soda are dissolved in 80 parts of an aqueous chromium hydroxide paste containing 7.6 parts of Or $ 0s; the reaction mixture is then mixed with 15 parts of 1-oxynaphthalene and cooled to <B> 150 </B>. 27.3 parts of diazotized 1-aniino-2-oxynaphthalene-4-sulfonic acid are then added and the mixture is heated to 40 ° until the diazo compound has disappeared. It is then heated to <B> 70-76 '</B> and held at this temperature until the dye has completely converted into its chromium compound.
The chroming mixture is then diluted with 1000 parts of water and refluxed for 6-8 hours. The initially red-violet solution turns blue-violet. After cooling to 50-60, it is neutralized with 10% hydrochloric acid, then acidified with 3 parts of acetic acid and, after the insoluble constituents have been filtered off, evaporated to dryness in vacuo.
The same colorant is obtained if other alkaline agents, such as potassium hydroxide, soda, pottache, borax, magnesium oxide, ammonia or trialkali phosphate, are used instead of sodium hydroxide.
The treatment of the chromium compound with the alkaline agents must be carried out through prolonged perforation, open or under pressure, and through a suitable choice of the alkaline agent and the alkali concentration.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH169693T | 1933-03-31 | ||
CH172575T | 1933-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH172575A true CH172575A (en) | 1934-10-15 |
Family
ID=25718756
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH172575D CH172575A (en) | 1933-03-31 | 1933-03-31 | Process for the preparation of a chromium-containing azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH172575A (en) |
-
1933
- 1933-03-31 CH CH172575D patent/CH172575A/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH172575A (en) | Process for the preparation of a chromium-containing azo dye. | |
DE617999C (en) | Process for the production of chromium-containing azo dyes | |
CH169693A (en) | Process for the preparation of a chromium-containing azo dye. | |
DE673025C (en) | Process for the production of metal-containing azo dyes | |
AT162618B (en) | Process for the preparation of new tetrakisazo dyes | |
DE737517C (en) | Process for the production of azo dyes | |
AT138381B (en) | Process for the production of chromium-containing dyes. | |
AT165077B (en) | Process for the preparation of new trisazo dyes | |
DE749166C (en) | Process for the preparation of monoazo dyes | |
DE616138C (en) | Process for the production of conversion products of chromium-containing azo dyes | |
DE617949C (en) | Process for the production of chromium-containing azo dyes | |
AT162613B (en) | Process for the preparation of new monoazo dyes | |
DE731678C (en) | Process for the preparation of chromium-containing o-oxyazo dyes | |
CH263505A (en) | Process for the preparation of an azo dye. | |
CH263506A (en) | Process for the preparation of an azo dye. | |
CH295301A (en) | Process for the preparation of a metal-containing monoazo dye. | |
CH170322A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH168930A (en) | Process for the production of a new chromium-containing dye. | |
CH267270A (en) | Process for the preparation of an azo dye. | |
CH172596A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH312571A (en) | Process for the preparation of a metal-containing monoazo dye | |
CH172603A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH171595A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172599A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH286351A (en) | Process for the preparation of a chromium-containing monoazo dye. |