CH211840A - Process for the production of a new azo dye. - Google Patents
Process for the production of a new azo dye.Info
- Publication number
- CH211840A CH211840A CH211840DA CH211840A CH 211840 A CH211840 A CH 211840A CH 211840D A CH211840D A CH 211840DA CH 211840 A CH211840 A CH 211840A
- Authority
- CH
- Switzerland
- Prior art keywords
- azo dye
- new azo
- production
- red
- new
- 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
- C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
- C09B29/12—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group of the benzene series
-
- 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
- C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
- C09B29/18—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group ortho-Hydroxy carbonamides
- C09B29/20—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group ortho-Hydroxy carbonamides of the naphthalene series
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Coloring (AREA)
Description
Verfahren zur Herstellung eines neuen Azofarbstoffes. Es wurde gefunden, dass ein neuer Azo- farbstoff hergestellt werden kann, wenn man diazotiertes 2,5-Dichlor-l-aminobenzol mit 2,3-Oxynaphthoesäure-3'-pyrenolid vereinigt.
Der neue Azofarbstoff bildet ein rot braunes, in Wasser unlösliches Pulver. Auf geeigneten Substraten, wie z. B. Baumwolle, hergestellt, färbt er diese in sehr echten, ins besondere auch lichtechten rotbraunen Tönen. <I>Beispiel:
</I> 16,2 Teile 2,5 - Dichlor -1- aminobenzol (1/,o DZol) werden wie üblich diazotiert und in eine Lösung von 38,8 Teilen 2,3- Oxynaphthoesäure-3'-pyrenolid (1/" Mol), 100 Teilen Natriumhydroxydlös.ung von <B>36'</B> Be, 15 Teilen Natriumacetat und 2000 Teilen Wasser eingetragen. Der gebil dete Farbstoff fällt sofort aus.
Er wird ab filtriert, mit. Wasser gewaschen und ge trocknet.
Process for the production of a new azo dye. It has been found that a new azo dye can be produced if diazotized 2,5-dichloro-1-aminobenzene is combined with 2,3-oxynaphthoic acid-3'-pyrenolide.
The new azo dye forms a red-brown powder that is insoluble in water. On suitable substrates, such as. B. cotton, produced, he dyes them in very real, especially lightfast red-brown tones. <I> example:
</I> 16.2 parts of 2,5 - dichloro -1- aminobenzene (1 /, o DZol) are diazotized as usual and in a solution of 38.8 parts of 2,3-oxynaphthoic acid-3'-pyrenolide (1 / "Mol), 100 parts of sodium hydroxide solution of <B> 36" </B> Be, 15 parts of sodium acetate and 2000 parts of water are added. The dye formed precipitates out immediately.
It is filtered off with. Washed in water and dried.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH211840T | 1937-06-02 | ||
CH208951T | 1937-06-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH211840A true CH211840A (en) | 1940-10-15 |
Family
ID=25724636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH211840D CH211840A (en) | 1937-06-02 | 1937-06-02 | Process for the production of a new azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH211840A (en) |
-
1937
- 1937-06-02 CH CH211840D patent/CH211840A/en unknown
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