CH296540A - Process for the preparation of a monoazo dye. - Google Patents
Process for the preparation of a monoazo dye.Info
- Publication number
- CH296540A CH296540A CH296540DA CH296540A CH 296540 A CH296540 A CH 296540A CH 296540D A CH296540D A CH 296540DA CH 296540 A CH296540 A CH 296540A
- Authority
- CH
- Switzerland
- Prior art keywords
- blue
- monoazo dye
- red
- preparation
- 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
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/02—Monoazo dyes prepared by diazotising and coupling from diazotised o-amino-hydroxy compounds
-
- 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)
- Seasonings (AREA)
Description
verfahren zur Herstellung eines Monoazofarbstoffes. Es wurde gefunden, dass man zu einem wertvollen Monoazofarbstoff gelangt, wenn man dianotiertes 2-Ätliy 1-1-aminobenzol mit 1-(-1'-Tertiäi-butylbenzoylamino)-8-oxynaph- thalin-3,6-disulfonsäure vereinigt.
Der neue Farbstoff stellt ein blaurotes Pulver dar, das sich in Wasser mit blauroter Farbe löst und Wolle aus essigsaurem Bade in reinen blauroten Tönen von guter Wasc.h- und Lichtechtheit färbt.
Die dem vorliegenden Verfahren als Aus- gangsstoff dienende 1.- (4'-Tertiärbutylben- zoyl a niino) -b-oxynaplithalin - 3,6-disulf onsätzrc kann beispielsweise erhalten werden, indem wau 1-Aniino-8-oxynaphtlialin-3,
6-disulfon- süttre an der Aminogruppe finit einem 1i-Ter- tiiii-but.ylbenzoesäurehalogenicl acyliert.
1)ie Kupplung kann nach an sieh bekann- teii Methoden in alkaliseheni, z. B. in natrinin- earbonatlialtigem Medium, erfolgen.
<I>Beispiel:</I> In eine Lösung von 27 Teilen des Di- natrinmsalzes der 7-(4'-Tertiärbutylbenzoyl- amino)-8-oxynaphthalin-3,6-disulfonsäure in -100 Teilen Wasser, welche mit 200 Teilen einer 10 % igen Natriumcarbonatlösung ver- mischt wurde, tropft man bei 0 bis 5 die auf übliche Weise dargestellte Diazolöstuig aus 6,
2 Teilen 2-Äthyl-1-aminobeiizol. Es entsteht ein blattroter Farbstoff, der nach einigen Stunden abfiltriert und durch Lösen in hei ssem Wasser und partielles Aussalzen gegebe nenfalls gereinigt, wird.
process for the production of a monoazo dye. It has been found that a valuable monoazo dye is obtained if dianotated 2-Ätliy 1-1-aminobenzene is combined with 1 - (-1'-tert-butylbenzoylamino) -8-oxynaphthalene-3,6-disulfonic acid.
The new dye is a blue-red powder that dissolves in water with a blue-red color and dyes wool from an acetic acid bath in pure blue-red shades of good fastness to washing and light.
The 1.- (4'-tert-butylbenzoyl-a niino) -b-oxynaplithalin-3,6-disulfone set serving as the starting material for the present process can be obtained, for example, by adding 1-aniino-8-oxynaphtlialin-3,
6-disulfon- süttre at the amino group finitely acylated with a 1i-ter- tiiii-butylbenzoic acid halogenicl.
1) The coupling can be carried out in alkaline conditions according to methods known per se, e.g. B. in natrinin- earbonatlialtigem medium.
<I> Example: </I> In a solution of 27 parts of the disodium salt of 7- (4'-tert-butylbenzoyl-amino) -8-oxynaphthalene-3,6-disulfonic acid in -100 parts of water, which with 200 parts a 10% sodium carbonate solution was mixed, at 0 to 5 the diazole solution prepared in the usual way from 6 is added dropwise,
2 parts of 2-ethyl-1-aminobeiizole. A leaf-red dye is formed, which is filtered off after a few hours and, if necessary, purified by dissolving it in hot water and partially salting out.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH296540T | 1950-11-09 | ||
CH293115T | 1951-10-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH296540A true CH296540A (en) | 1954-02-15 |
Family
ID=25733331
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH296540D CH296540A (en) | 1950-11-09 | 1950-11-09 | Process for the preparation of a monoazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH296540A (en) |
-
1950
- 1950-11-09 CH CH296540D patent/CH296540A/en unknown
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