CH184775A - Process for the preparation of a water-insoluble disazo dye of the benzidine series. - Google Patents
Process for the preparation of a water-insoluble disazo dye of the benzidine series.Info
- Publication number
- CH184775A CH184775A CH184775DA CH184775A CH 184775 A CH184775 A CH 184775A CH 184775D A CH184775D A CH 184775DA CH 184775 A CH184775 A CH 184775A
- Authority
- CH
- Switzerland
- Prior art keywords
- water
- preparation
- insoluble
- disazo dye
- 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
- C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
- C09B35/02—Disazo dyes
- C09B35/039—Disazo dyes characterised by the tetrazo component
- C09B35/08—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl
- C09B35/10—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl from two coupling components of the same type
- C09B35/18—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl from two coupling components of the same type from heterocyclic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr. 182050. Verfahren zur Darstellung eines wasserunlöslichen Disazofarbstoffes der Benzidinreihe. Es wurde gefunden, dass ein wertvoller, wasserunlöslicher Disazofarbstoff erhalten wird, der sich zum Färben von Zelluloseester- und Spritlacken, sowie für graphische Zwecke, wie beispielsweise Kupfertiefdruck, sehr gut eignet, wenn man tetrazotiertes 4.4'-Diamino-2.2'-,
dimethyl-diphenyl mit 1-Phenyl-3-methyl-5-pyrazolon kuppelt.
<I>Beispiel:</I> 21,2 kg 4.4'-Diamino-2.2'-,dimethyl- diphenyl werden in üblicher Weise tetrazo- tiert und mit 34;8 kg 1-Phenyl-3-methyl-5- pyrazolon sodaalkalsch .gekuppelt.
Der nach bekannter Arbeitsweise aufgearbeitete Farb stoff ist ein in Wasser unlösliches, .gelbes Pulver, das sich mit oranger Farbe in kon zentrierter Schwefelsäure löst und sich in folge seiner grossen Ausgiebigkeit, guten Lichtechtheit und Löslichkeit hervorragend eignet zum Färben von Nitro- und Acetyl- zelluloselacken und,der für Kupfertiefdruck benützten Harz- und Lösungsmittelgemische. Die Lösung in Leinöl ergibt,
nach den üb lichen Methoden auf Papier aufgewalzt, einen leuchtend gelben Druck, der rasch und mit Hochglanz trocknet, ohne durch das Papier durchzuschlagen.
<B> Additional patent </B> to main patent No. 182050. Process for the preparation of a water-insoluble disazo dye of the benzidine series. It has been found that a valuable, water-insoluble disazo dye is obtained, which is very suitable for coloring cellulose ester and fuel varnishes, as well as for graphic purposes, such as copper gravure printing, if tetrazotized 4,4'-diamino-2.2'-,
dimethyl-diphenyl couples with 1-phenyl-3-methyl-5-pyrazolone.
<I> Example: </I> 21.2 kg 4,4'-diamino-2.2 '-, dimethyldiphenyl are tetrazolated in the usual way and soda-alkaline with 34; 8 kg 1-phenyl-3-methyl-5-pyrazolone .coupled.
The dye, which is worked up according to the known working method, is a yellow powder that is insoluble in water, which dissolves in concentrated sulfuric acid with an orange color and, due to its high yield, good lightfastness and solubility, is ideally suited for dyeing nitro and acetyl cellulose lacquers and, the resin and solvent mixtures used for copper gravure printing. The solution in linseed oil gives
Rolled onto paper using the usual methods, a bright yellow print that dries quickly and with a high gloss without showing through the paper.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH184775T | 1936-01-15 | ||
CH182050T | 1936-01-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH184775A true CH184775A (en) | 1936-06-15 |
Family
ID=25720655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH184775D CH184775A (en) | 1936-01-15 | 1936-01-15 | Process for the preparation of a water-insoluble disazo dye of the benzidine series. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH184775A (en) |
-
1936
- 1936-01-15 CH CH184775D patent/CH184775A/en unknown
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