DE561493C - Process for the production of azo dyes - Google Patents
Process for the production of azo dyesInfo
- Publication number
- DE561493C DE561493C DEG71981D DEG0071981D DE561493C DE 561493 C DE561493 C DE 561493C DE G71981 D DEG71981 D DE G71981D DE G0071981 D DEG0071981 D DE G0071981D DE 561493 C DE561493 C DE 561493C
- Authority
- DE
- Germany
- Prior art keywords
- production
- azo dyes
- dyes
- yellow
- lightfast
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/34—Monoazo dyes prepared by diazotising and coupling from other coupling components
- C09B29/36—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds
- C09B29/3604—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom
- C09B29/3647—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms
- C09B29/3652—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms containing a 1,2-diazoles or hydrogenated 1,2-diazoles
- C09B29/366—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms containing a 1,2-diazoles or hydrogenated 1,2-diazoles containing hydroxy-1,2-diazoles, e.g. pyrazolone
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/02—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using azo dyes
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Description
Verfahren zur Herstellung von Azofarbstoffen Es wurde gefunden, daß man wertvolle Farbstoffe erhält, wenn man diazotierte unsulfonierte o-Nitraniline mit 3-Methyl-5-pyrazolon kuppelt. Die Farbstoffe zeichnen sich durch eine hervorragende Affinität zu den Celluloseestern, wie Acetatseide, aus und färben dieses Material in sehr lichtechten gelben Farbtönen, welche nicht phototrop sind. Infolge ihrer Löslichkeit in Alkohol und den verschiedensten organischen Lösungsmitteln können sie zur Herstellung gefärbter Lacke verwendet werden.Process for the preparation of azo dyes It has been found that valuable dyes are obtained if diazotized unsulfonated o-nitroanilines couples with 3-methyl-5-pyrazolone. The dyes are characterized by excellent Affinity to the cellulose esters, such as acetate silk, and color this material in very lightfast yellow shades which are not phototropic. As a result of her Solubility in alcohol and a wide variety of organic solvents can they are used to make colored paints.
Beispiel Die auf übliche Weise erhaltene Diazolösung von 15,2 Teilen m-N itro-p-toluidin (NO@@2; 1VH.,-r: wird in eine Lösung von io Teilen 3-illethvl-5-pyrazolon, welche 3o Teile kristallisiertes Natriumacetat enthält, gegeben. Der sofort ausfallende Farbstoff wird filtriertund gewaschen. Trocken bildet er ein gelbes Pulver, das in Wasser unlöslich und in Alkohol mit gelber Farbe löslich ist. Aus wäßriger Suspension färbt er Acetatseide in gelben, hervorragend lichtechten Tönen. Lacke (z. B. Nitrocelluloselack oder Lacke anderer Herkunft) werden durch diesen Farbstoff in hervorragend lichtechten gelben Tönen gefärbt.Example The conventionally obtained diazo solution of 15.2 parts m-N itro-p-toluidine (NO @@ 2; 1VH., - r: is dissolved in a solution of 10 parts 3-illethvl-5-pyrazolone, which contains 30 parts of crystallized sodium acetate, given. The one that fails immediately Dye is filtered and washed. When dry it forms a yellow powder that is insoluble in water and soluble in alcohol with a yellow color. From an aqueous suspension he dyes acetate silk in yellow, excellent lightfast shades. Lacquers (e.g. nitrocellulose lacquer or varnishes of other origin) are extremely lightfast thanks to this dye colored yellow tones.
Ähnliche Farbstoffe entstehen mit andern o-N itranilinderivaten, wie o-Nitranilin selbst, p-Chlor-o-nitranilin, den p-Alkoxy-o-nitrariilinen usw.Similar dyes are created with other o-nitroaniline derivatives, such as o-nitroaniline itself, p-chloro-o-nitroaniline, the p-alkoxy-o-nitrariilines, etc.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH561493X | 1926-12-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE561493C true DE561493C (en) | 1932-10-14 |
Family
ID=4520328
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEG71981D Expired DE561493C (en) | 1926-12-24 | 1927-12-17 | Process for the production of azo dyes |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE561493C (en) |
-
1927
- 1927-12-17 DE DEG71981D patent/DE561493C/en not_active Expired
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