DE2500019B2 - MONOAZO DYE, THE METHOD FOR ITS MANUFACTURING AND ITS USE - Google Patents
MONOAZO DYE, THE METHOD FOR ITS MANUFACTURING AND ITS USEInfo
- Publication number
- DE2500019B2 DE2500019B2 DE19752500019 DE2500019A DE2500019B2 DE 2500019 B2 DE2500019 B2 DE 2500019B2 DE 19752500019 DE19752500019 DE 19752500019 DE 2500019 A DE2500019 A DE 2500019A DE 2500019 B2 DE2500019 B2 DE 2500019B2
- Authority
- DE
- Germany
- Prior art keywords
- potassium
- dye
- electrolytes
- sulfonic acid
- addition
- 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.)
- Granted
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
- C09B69/00—Dyes not provided for by a single group of this subclass
- C09B69/02—Dyestuff salts, e.g. salts of acid dyes with basic dyes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Gegenstand der Erfindung ist der Farbstoff der FormelThe invention relates to the dye of the formula
Der Farbstoff wird bevorzugt in Mischungen mit wasserlöslichen Nichtelektrolyten wie Dextrin, Zucker, Polyvinylpyrrolidon, Harnstoff oder anionischen Dispergiermitteln wie Ligninsulfonsäuren, Alkylnaphthalinsulfonsäuren, Kondensationsprodukte aus Naphthalin, Formaldehyd und Schwefelsäure, Alkyl- oder Alkylarylsulfonsäuren, und Monoschwefelsäureester von Alkanolen eingesetzt. Darüber hinaus werden häufig geringe Mengen Entstaubungsmittel wie öle, Phthalsäureester oder nichtionogene Tenside zugesetzt.The dye is preferred in mixtures with water-soluble non-electrolytes such as dextrin, sugar, Polyvinylpyrrolidone, urea or anionic dispersants such as ligninsulphonic acids, alkylnaphthalenesulphonic acids, Condensation products of naphthalene, formaldehyde and sulfuric acid, alkyl or Alkylarylsulfonic acids, and monosulfuric acid esters of alkanols are used. Beyond that often small amounts of dedusting agents such as oils, phthalic acid esters or non-ionic surfactants are added.
Der Farbstoff findet Verwendung zum Färben vonThe dye is used for coloring
37 g 2,5-Dichlorsulfanilsäure werden in 270 ml Wasser und mit 50 g 32°/oiger Salzsäure und 36 g 30%'iger Natriumnitritlösung bei 10— 15°C diazotiert. Nach einer halben Stunde Rühren bei 10-15°C wird der Überschuß an Nitrit mit Amidosulfonsäure zerstört. 28g 5-Imino-3-methyl-l-phenyl-2-pyrazolin werden in 180 ml Wasser und 25 g 32%iger Salzsäure gelöst und mit 5 g Aktivkohle geklärt. Diese Lösung wird auf 830 ml bei 150C aufgefüllt Die kalte Lösung des diazotierten Amins wird zugegeben, gefolgt durch die Zugabe von ungefähr 250 ml 20%iger wäßriger Natriumacetatlösung zu Einstellung von pH 4. Nach Beendigung der Kupplung wird der Farbstoff gegebenenfalls unter Zusatz von Wasser durch Erhitzen gelöst und nach Zugabe von Aktivkohle geklärt Anschließend wird das noch heiße Filtrat mit 30% Salzsäure auf pH 03-I gestellt, 15—30 Minuten auf 80—9O0C erhitzt und anschließend der Farbstoff abgesaugt.37 g of 2,5-dichlorosulfanilic acid are diazotized in 270 ml of water and with 50 g of 32% hydrochloric acid and 36 g of 30% sodium nitrite solution at 10-15 ° C. After half an hour of stirring at 10-15 ° C, the excess nitrite is destroyed with sulfamic acid. 28 g of 5-imino-3-methyl-1-phenyl-2-pyrazoline are dissolved in 180 ml of water and 25 g of 32% strength hydrochloric acid and clarified with 5 g of activated charcoal. This solution is made up to 830 ml at 15 ° C. The cold solution of the diazotized amine is added, followed by the addition of approximately 250 ml of 20% strength aqueous sodium acetate solution to adjust pH 4. After the coupling is complete, the dye is optionally with the addition of water dissolved by heating and cleared after addition of activated carbon then the still hot filtrate is adjusted with 30% hydrochloric acid to pH 03-I, heated 15-30 minutes at 80-9O 0 C and then filtered off with suction of the dye.
Man kann aber auch den Farbstoff bei pH 4 isolieren, den Preßkuchen mit Wasser anrühren, mit verdünnter Salzsäure auf pH 1 stellten, 15—30 Minuten auf 80—9O0C erhitzen, die Farbstoffsäure anschließend absaugen.One can also isolate the dye at pH 4, touch the press cake with water, set with dilute hydrochloric acid to pH 1, 15-30 minutes at 80-9O 0 C Heat, then aspirate the dye acid.
188 g wäßriger Preßkuchen der Farbstoffsäure (entsprechend 136 g Trockenfarbstoff]! werden mit 600 ml Wasser angerührt, mit verdünnter Kalilauge auf pH 6 gestellt (ca. 22 g KOH), anschließend mit 38 g Dextrin und 4 g Natriumsalz der Dibutylnaphthalinsulfonsäure vermischt Diese Mischung wird mit einer Zweistoffdüse sprühgetrocknet, wobei die Temperatur der eingehenden Luft im Sprühtrockner J80°C und die der ausgehenden Luft 8O0C beträgt Man erhält ein gelbes Farbstoffpulver mit einer sehr guten Löslichkeit in heißem und kaltem Wasser. In 250 ml Wasser lösen sich bsi Zimmertemperatur mindestens 7,5 g des Farbstoffpulvers.188 g of aqueous dye acid press cake (corresponding to 136 g of dry dye]! Are mixed with 600 ml of water, adjusted to pH 6 with dilute potassium hydroxide solution (approx. 22 g of KOH), then mixed with 38 g of dextrin and 4 g of the sodium salt of dibutylnaphthalenesulfonic acid. This mixture is mixed spray-dried using a two-fluid nozzle, giving a yellow dye powder with a very good solubility in hot and cold water the temperature of the incoming air in the spray dryer J80 ° C and the outgoing air is 8O 0 C. Add 250 ml water to bsi room temperature solve at least 7.5 g of the dye powder.
Claims (2)
I, Monoazofarbstoffe der FormelPatent claims:
I, monoazo dyes of the formula
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19752500019 DE2500019C3 (en) | 1975-01-02 | Monoazo dye, process for its preparation and its use | |
GB4263475A GB1490139A (en) | 1975-01-02 | 1975-10-17 | Water-soluble monoazo dyestuffs |
FR7600032A FR2296669A1 (en) | 1975-01-02 | 1976-01-02 | AZOIC COLORANTS, THEIR OBTAINING AND THEIR APPLICATION |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19752500019 DE2500019C3 (en) | 1975-01-02 | Monoazo dye, process for its preparation and its use |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2500019A1 DE2500019A1 (en) | 1976-07-15 |
DE2500019B2 true DE2500019B2 (en) | 1977-03-17 |
DE2500019C3 DE2500019C3 (en) | 1977-11-24 |
Family
ID=
Also Published As
Publication number | Publication date |
---|---|
FR2296669A1 (en) | 1976-07-30 |
DE2500019A1 (en) | 1976-07-15 |
GB1490139A (en) | 1977-10-26 |
FR2296669B1 (en) | 1980-08-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C3 | Grant after two publication steps (3rd publication) | ||
E77 | Valid patent as to the heymanns-index 1977 | ||
8339 | Ceased/non-payment of the annual fee |