CH194188A - Process for the preparation of a water-insoluble disazo dye. - Google Patents
Process for the preparation of a water-insoluble disazo dye.Info
- Publication number
- CH194188A CH194188A CH194188DA CH194188A CH 194188 A CH194188 A CH 194188A CH 194188D A CH194188D A CH 194188DA CH 194188 A CH194188 A CH 194188A
- Authority
- CH
- Switzerland
- Prior art keywords
- orange
- water
- preparation
- disazo dye
- insoluble disazo
- 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
- C09B35/28—Disazo dyes characterised by the tetrazo component the tetrazo component containing two aryl nuclei linked by at least one of the groups —CON<, —SO2N<, —SO2—, or —SO2—O—
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
- Paper (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Description
Verfahren zur Herstellung eines wasserunlöslichen Bisazofarbstoffes. Es wurde gefunden, dass man durch Kup peln von tetrazotiertem p,p'-Diaminodiphe- nylsulfon mit 2 Mol. a Naphthylamin einen neuen, wertvollen, wasserunlöslichen Disazo- farbstoff erhält, der sich infolge seiner guten Löslichkeit zum Färben vor) Celluloseester- und Spritlacken, Ölen und Fetten, Kohlen- wasserstoffen,
Harzen, Wachsen, sowie für graphische Zwecke, wie beispielsweise Kupfer tiefdruck, eignet.
Der neue Farbstoff, ein oranges Pulver, löst sich in Alkohol gelborange und in kon zentrierter Schwefelsäure orange und gibt ,sehr reine, braune Drucke, die sich durch hervorragende Sublimierechtheit auszeichnen. <I>Beispiel:</I> <B>6,2 kg p,</B> p'-Diamitiodiphenylsulfon werden in üblicher Weise tetrazotiert und langsam bei<B>0 0</B> zu einer feinverteilten, wässrigen Sus pension von<B>9,1 kg</B> a-Naphthylamin-Chlorhy- drat gegeben. Durch langsame Zugabe von Natriumacetat wird die Mineralsäure abge stumpft und die Kupplung beendet.
Nachher wird filtriert, neutral gewaschen und getrock net. Das erhaltene orange Pulver löst sich in Alkohol gelborange und in konz. Schwefel säure orange und färbt Celluloseester- und Spritlacke, sowie Öle, Fette, Kohlenwasser- stoffe, Harze, Wachse und Lösungsmittel- gemische für Kupfertiefdruck in sehr reinen, braunen Tönen, die Drucke von sehr guter Sublimierechtheit ergeben.
Process for the preparation of a water-insoluble bisazo dye. It has been found that coupling tetrazotized p, p'-diaminodiphenylsulfone with 2 mol , Oils and fats, hydrocarbons,
Resins, waxes and for graphic purposes, such as copper gravure printing, are suitable.
The new dye, an orange powder, dissolves yellow-orange in alcohol and orange in concentrated sulfuric acid and gives very pure, brown prints that are characterized by excellent sublimation fastness. <I> Example: </I> <B> 6.2 kg p, </B> p'-Diamitiodiphenylsulfon are tetrazotized in the usual way and slowly at <B> 0 0 </B> to form a finely divided, aqueous suspension given by <B> 9.1 kg </B> a-naphthylamine chlorohydrate. The mineral acid is blunted by the slow addition of sodium acetate and the coupling is ended.
It is then filtered, washed neutral and net getrock. The orange powder obtained dissolves in alcohol yellow-orange and in conc. Sulfuric acid orange and colors cellulose ester and fuel varnishes, as well as oils, fats, hydrocarbons, resins, waxes and solvent mixtures for copper gravure printing in very pure, brown tones, which result in prints with very good sublimation fastness.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE194188X | 1936-05-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH194188A true CH194188A (en) | 1937-11-30 |
Family
ID=5743074
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH194188D CH194188A (en) | 1936-05-08 | 1937-01-05 | Process for the preparation of a water-insoluble disazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH194188A (en) |
-
1937
- 1937-01-05 CH CH194188D patent/CH194188A/en unknown
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