CH188520A - Process for the preparation of a new monoazo dye. - Google Patents
Process for the preparation of a new monoazo dye.Info
- Publication number
- CH188520A CH188520A CH188520DA CH188520A CH 188520 A CH188520 A CH 188520A CH 188520D A CH188520D A CH 188520DA CH 188520 A CH188520 A CH 188520A
- Authority
- CH
- Switzerland
- Prior art keywords
- new
- pure
- dye
- preparation
- bluish
- 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
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/24—Monoazo dyes prepared by diazotising and coupling from coupling components containing both hydroxyl and amino directing groups
- C09B29/28—Amino naphthols
- C09B29/30—Amino naphtholsulfonic acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 184014. Verfahren zur Darstellung eines neuen Nonoazofarbstoffes. Es wurde gefunden, dass man einen neuen, wertvollen Monoazofarbstoff erhält, wenn man die Diazoverbindung von 4- Amino-resorcin- diphenyläther von der Formel
EMI0001.0006
mit 8-p-Toluolsulfoylamino-l-oxy-naphthalin- disulfonsäure-(3.6) kuppelt.
Der neue Farbstoff bildet ein bläulich rotes Pulver, welches in Wasser mit lebhaft blaustichig roter, in konzentrierter Schwefel säure mit reinblauer Farbe löslich ist. Er färbt Wolle, Seide und Zelluloseesterlacke in sehr schönen, reinen, rotvioletten Tönen von sehr guter Lichtechtheit; die Textilfärbungen zeigen ausserdem noch eine gute Walk- beständigkeit und eine besonders gute See wasserechtheit. Der reine und blaustichige Farbton des neuen Farbstoffes ist in seiner Lebhaftigkeit in der Azoreihe unübertroffen.
<I>Beispiel:</I> 27,7 kg 9-Amino-resorcin-diphenyläther, ein goldgelbes, dickes 01, welches erhalten wird, indem man 2.4-Dichlor-nitrobenzolmit Phenol in Gegenwart von Alkalihydroxyd bei Temperaturen von 130-150 zur Umsetzung bringt, reduziert und im Vakuum destilliert (240-250 bei 18 mm) werden diazotiert. Die Diazolösung lässt man unter gutem Rüh ren bei 0 in eine wässrige Lösung von 47,5 kg 8-p-Toluolsulfoylamino-1- oxy- naphthalin - di- sulfonsäure-(3.6)
und überschüssigem Na triumacetat einlaufen. Durch allmähliche Zu gabe von Sodalösung wird neutralisiert. Nach beendeter Kupplung wird aufgeheizt, aus gesalzen, filtriert und getrocknet.
Der erhaltene Farbstoff bildet ein bläulich rotes Pulver, das in Wasser mit lebhaft blau stichig roter, in konzentrierter Schwefelsäure mit reinblauer Farbe löslich ist. Er färbt Wolle und Seide in klaren, rotvioletten Tönen von sehr guter Licht- und Walkechtheit und vor züglicher Seewasserechtheit. Die Lichtecht heit eines mit dem neuen Farbstoff gefärbten Zelluloseesterlackes ist hervorragend.
Additional patent to main patent No. 184014. Process for the preparation of a new nonoazo dye. It has been found that a new, valuable monoazo dye is obtained if the diazo compound of 4-amino-resorcinol diphenyl ether of the formula
EMI0001.0006
with 8-p-toluenesulfoylamino-l-oxy-naphthalenedisulfonic acid- (3.6) couples.
The new dye forms a bluish red powder, which is soluble in water with a vivid bluish red color and in concentrated sulfuric acid with a pure blue color. It dyes wool, silk and cellulose ester lacquers in very beautiful, pure, red-violet shades of very good lightfastness; the textile dyeings also show good flexing resistance and particularly good seawater fastness. The pure and bluish hue of the new dye is unsurpassed in its liveliness in the azo range.
<I> Example: </I> 27.7 kg of 9-amino-resorcinol diphenyl ether, a golden yellow, thick oil, which is obtained by adding 2,4-dichloro-nitrobenzene with phenol in the presence of alkali hydroxide at temperatures of 130-150 Implementation brings, reduced and distilled in vacuo (240-250 at 18 mm) are diazotized. The diazo solution is left with good stirring at 0 in an aqueous solution of 47.5 kg of 8-p-toluenesulfoylamino-1-oxynaphthalene-disulfonic acid- (3.6)
and run in excess sodium acetate. Gradual addition of soda solution will neutralize. After coupling has ended, the mixture is heated, salted out, filtered and dried.
The dye obtained forms a bluish red powder, which is soluble in water with a vivid blue-tinged red, in concentrated sulfuric acid with a pure blue color. It dyes wool and silk in clear, red-violet tones of very good lightfastness and millfastness and excellent seawaterfastness. The lightfastness of a cellulose ester varnish colored with the new dye is excellent.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH188520T | 1935-09-24 | ||
CH184014T | 1935-09-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH188520A true CH188520A (en) | 1936-12-31 |
Family
ID=25720963
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH188520D CH188520A (en) | 1935-09-24 | 1935-09-24 | Process for the preparation of a new monoazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH188520A (en) |
-
1935
- 1935-09-24 CH CH188520D patent/CH188520A/en unknown
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