CH254151A - Process for the preparation of a polyazo dye of the pyrazolone series. - Google Patents
Process for the preparation of a polyazo dye of the pyrazolone series.Info
- Publication number
- CH254151A CH254151A CH254151DA CH254151A CH 254151 A CH254151 A CH 254151A CH 254151D A CH254151D A CH 254151DA CH 254151 A CH254151 A CH 254151A
- Authority
- CH
- Switzerland
- Prior art keywords
- mol
- methyl
- dye
- benzidine
- nitro
- 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
- C09B35/38—Trisazo dyes ot the type
- C09B35/48—Trisazo dyes ot the type the component K being heterocyclic
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Coloring (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 248806. Verfahren zur Herstellung eines Polyazofarbstoffes der Pyrazolonreihe. Gegenstand vorliegenden Patentes ist ein Verfahren zur Herstellung eines Polyazo- farbstoffes der Pyrazolonreihe. Das Verfah ren ist dadurch gekennzeichnet, dass man 1 Mol 1-Diazo-6-nitro-2-oxy-naphthalin-4- sulfonsäure, 2 Mol 1-(4'-Amino-phenyl)-3- metlhyl-5-pyrazolon,
1 Mal Phosgen, 1 Mol Salicylsäure und 1 Mol der Tetrazoverbin- dung des Benzidins .derart aufeinander ein- wirken lässt, dass ein Trisazofarbstoff der Formel
EMI0001.0024
entsteht.
Der neue metallisierbare Trisazofarbstoff stellt ein dunkles Pulver dar, \welches sich in Wasser mit rotbrauner und in konzen trierter Schwefelsäure mit tiefroter Farbe löst und Cellulosefasern aus dem neutralen Glaubersalzbad in braunroten Tönen anfärbt. Durch Nachbehandlung mit Kupfersulfat entsteht ein Orange, das sehr gute Gesamt- echtheiten aufweist.
Beispiel: 40,4 Teile Harnstoff aus 1-(4'-Amino- phenyl) - 3 - methyl - 5 - pyrazolon werden in soloalkalischer Lösung mit dem Zwischen- Produkt, dargestellt aus 18,4 Teilen tetra- zotiertem Benzidin und<B>13,8</B> Teilen Salicyl- säure, zum einseitigen Kupplungsprodukt vereinigt.
Ist kein Benzidin-Salicylsäure- zwieehenprodukt mehr nachweisbar, so kup pelt man mit 28,4 Teilen diazotierter 1-Amino- 6-nitro-2-ogy-naphthalin-4-sulfonsäure im gleichen sodaalkalischen Medium weiter. Der neue Ti isazofarbstoff wird mit Salz gefällt, isoliert und getrocknet.
Der Farbstoff kann auch durch Kupp lung des Zwischenproduktes diazotierte 6-Ni- tro -1- amino - 2 - oxy-naphthalin-4-sulfonsäure -a- Dipyrazolonharnstöff mit dem Zwi- schenprodukt aus, tetrazotiertem Benzidin mit der molaren Menge Salicylsäure aufgebaut werden.
Zum gleichen Farbstoff gelangt man ferner, indem man den Aminoazofarbstoff aus. der Diazoverbindung der 1-Amino-6- nitro-2-ogy-naphthalin-4-sulfonsäure und dem. 1- (4'-Amino- phenyl) - 3 - methyl-5-pyr- azolon- mit dem Aminoazofarbstoff,
darge stellt durch Kuppeln von 1 Mol der Tetrazo- verbindung von Benzidin mit 1 Mol Salicyl- säure und 1 Mal 1-(4'-Amino-phenyf)-3,me- thyl-5-pyrazolon, in sodaalkalischem Medium mit Hilfe von Phosgen kondensiert, bis keine freien Aminogruppen mehr nachweisbar sind.
Additional patent to main patent No. 248806. Process for the production of a polyazo dye of the pyrazolone series. The present patent relates to a process for the preparation of a polyazo dye of the pyrazolone series. The procedural ren is characterized in that 1 mole of 1-diazo-6-nitro-2-oxy-naphthalene-4-sulfonic acid, 2 moles of 1- (4'-aminophenyl) -3-methyl-5-pyrazolone,
1 time phosgene, 1 mole of salicylic acid and 1 mole of the tetrazo compound of benzidine. This allows a trisazo dye of the formula
EMI0001.0024
arises.
The new metallizable trisazo dye is a dark powder which dissolves in water with red-brown and in concentrated sulfuric acid with a deep red color and stains cellulose fibers from the neutral Glauber's salt bath in brown-red tones. Post-treatment with copper sulphate creates an orange with very good overall authenticity.
Example: 40.4 parts of urea from 1- (4'-aminophenyl) - 3 - methyl - 5 - pyrazolone are in solo alkaline solution with the intermediate product, made up of 18.4 parts of tetrazotized benzidine and <B> 13.8 parts of salicylic acid, combined to form the one-sided coupling product.
If no more benzidine-salicylic acid product can be detected, the coupling is continued with 28.4 parts of diazotized 1-amino-6-nitro-2-ogy-naphthalene-4-sulfonic acid in the same alkaline soda medium. The new Ti isazo dye is precipitated with salt, isolated and dried.
The dye can also be built up by coupling the intermediate diazotized 6-nitro-1-amino-2-oxy-naphthalene-4-sulfonic acid-a-dipyrazolone urine with the intermediate from tetrazotized benzidine with the molar amount of salicylic acid.
The same dye can also be obtained by removing the aminoazo dye. the diazo compound of 1-amino-6-nitro-2-ogy-naphthalene-4-sulfonic acid and the. 1- (4'-Amino-phenyl) -3-methyl-5-pyr-azolone with the aminoazo dye,
shown by coupling 1 mole of the tetrazo compound of benzidine with 1 mole of salicylic acid and 1 time 1- (4'-aminophenyf) -3, methyl-5-pyrazolone, in a soda-alkaline medium with the aid of phosgene condenses until free amino groups can no longer be detected.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH254151T | 1945-12-27 | ||
CH248806T | 1945-12-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH254151A true CH254151A (en) | 1948-04-15 |
Family
ID=25729306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH254151D CH254151A (en) | 1945-12-27 | 1945-12-27 | Process for the preparation of a polyazo dye of the pyrazolone series. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH254151A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE908900C (en) * | 1951-06-04 | 1954-04-12 | Geigy Ag J R | Process for the production of copperable polyazo dyes |
-
1945
- 1945-12-27 CH CH254151D patent/CH254151A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE908900C (en) * | 1951-06-04 | 1954-04-12 | Geigy Ag J R | Process for the production of copperable polyazo dyes |
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