CH184483A - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- CH184483A CH184483A CH184483DA CH184483A CH 184483 A CH184483 A CH 184483A CH 184483D A CH184483D A CH 184483DA CH 184483 A CH184483 A CH 184483A
- Authority
- CH
- Switzerland
- Prior art keywords
- dimethyl
- new
- preparation
- azo dye
- good
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Verfahren zur Darstellung eines Azofarbstoffes. Es wurde gefunden, dass man einen neuen Azofarbstoff von wertvollen Eigenschaften erhält, wenn man diazotiertes 5-Niti-o-2-amino- 1-plienol mit 2.5-Dimethyl-l-morio-dioxy- propylaminobenzol, wie es erhalten werden kann, durch Kondensation von 2.5-Dimethyl- 1-aminobenzol mit a-Chlordioxypropan, ver einigt.
Der neue Farbstoff ist ein in Wasser un lösliches, dunkles Pulver, das in Aceton mit roter und in konzentrierter Schwefelsäure mit dunkel bordeauxroter Farbe löslich ist. Er färbt Acetatseide nach üblichem Verfahren auf Grund seines guten Ziehvermögens und seiner hervorragenden Löslichkeit in kräftigen roten Tönen, die sich durch ihre grosse Rein heit und Schönheit auszeichnen. Die Fär bungen zeigen gute Echtheitseigenschaften und sind rein weiss ätzbar. Das neue Pro dukt ist auch ein gutes Färbemittel für Lacke.
<I>Beispiel</I> 15,4 Teile 5-Niti-o-2-amino-l-phenol wer den mit 300 Teilen Wasser vermahlen; die erhaltene Suspension wird mit 25 Teilen kon zentrierter Salzsäure und 7 Teilen Natrium nitrit diazotiert und die so bereitete Diazo- Lösung mit einer Lösung von 19,5 Teilen 2 . 5-Dimethyl-l-mono-dioxypropylaminoben- zol in verdünnter Salzsäure vereinigt. Der nach längerem Rühren ausgeschiedene Farb stoff wird filtriert und gewaschen.
Process for the preparation of an azo dye. It has been found that a new azo dye of valuable properties is obtained if diazotized 5-niti-o-2-amino-1-plienol with 2,5-dimethyl-l-morio-dioxy-propylaminobenzene, as can be obtained, by Condensation of 2,5-dimethyl-1-aminobenzene with α-chlorodioxypropane, united ver.
The new dye is a dark, water-insoluble powder that is soluble in acetone with a red color and in concentrated sulfuric acid with a dark burgundy color. He dyes acetate silk using the usual methods due to its good drawability and its excellent solubility in strong red tones, which are characterized by their great purity and beauty. The dyeings show good fastness properties and can be etched in pure white. The new product is also a good colorant for paints.
<I> Example </I> 15.4 parts of 5-Niti-o-2-amino-1-phenol who are ground with 300 parts of water; the suspension obtained is diazotized with 25 parts of concentrated hydrochloric acid and 7 parts of sodium nitrite and the diazo solution thus prepared with a solution of 19.5 parts of 2. 5-dimethyl-1-mono-dioxypropylaminobenzene combined in dilute hydrochloric acid. The dye which separates out after prolonged stirring is filtered and washed.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH184483T | 1935-02-15 | ||
CH180692T | 1935-02-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH184483A true CH184483A (en) | 1936-05-31 |
Family
ID=25720447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH184483D CH184483A (en) | 1935-02-15 | 1935-02-15 | Process for the preparation of an azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH184483A (en) |
-
1935
- 1935-02-15 CH CH184483D patent/CH184483A/en unknown
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