CH99672A - Process for the preparation of a black azo dye. - Google Patents
Process for the preparation of a black azo dye.Info
- Publication number
- CH99672A CH99672A CH99672DA CH99672A CH 99672 A CH99672 A CH 99672A CH 99672D A CH99672D A CH 99672DA CH 99672 A CH99672 A CH 99672A
- Authority
- CH
- Switzerland
- Prior art keywords
- black
- preparation
- azo dye
- water
- precipitated
- Prior art date
Links
- 239000000987 azo dye Substances 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 3
- 238000002360 preparation method Methods 0.000 title claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- RNVCVTLRINQCPJ-UHFFFAOYSA-N o-toluidine Chemical compound CC1=CC=CC=C1N RNVCVTLRINQCPJ-UHFFFAOYSA-N 0.000 claims description 4
- 150000008049 diazo compounds Chemical class 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 1
- 239000000243 solution Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Inks, Pencil-Leads, Or Crayons (AREA)
Description
Verfahren zur Darstellung eines schwarzen Azofarbstoffes. Es wurde gefunden, dass man einen schwarzen Azofarbsto-ii erhält, wenn man die Diazoverbindung des p-Aminoazol-,Zirpers aus diazofiertem o-Toluidin <B>+</B> i<B>-</B> Amino-2- naplitoläthyläther mit 2 -3-Oxynaphioes < i-L[re- fl-naphialid kombiniert.
Getrocknet bildet der Farbstoff ein s "e,liwt ar7 es, metallglänzendes Pulver, das in Wasser unlöslich, in konzentrierter Schwe felsäure korinthfarbig löslich ist und aus dieser Lösung durch Wasser in schwarzen Floeken gefällt- wird. Er kann aber auel). auf der Faser erzeugt werden und liefert dann grünschwarze Färbungen von hervorragenden Echtheitseigenschaften.
<I>Beispiel<B>:</B></I> geringen Verunreinigungen befreit. 81-,3 Teile 2. 3-OxynaT]itoesäureiss-na-plit-alid werden in 20 Teilen Natronlauge<B>36'</B> B6 und<B>900</B> Tei len Wasser unter Zusatz einer wässerigen Lösung von<B>13</B> Teilen Natriumacetat und 2 Teilen Türkischrotijl in der Wärme gelöst, mit Eis auf zirka<B>10'</B> abgekühlt und filtriert. Diese Lösung Usst man unter Rühren bei<B>10</B> bis<B>15'</B> in die Diazolösung einlaufen. Nach.
Beendigung der Kupplung wird der entstan dene Farbstoff abfiltriert. Er bildet ein me tallisch, glänzendes, schwarzes Pulver, das sich in konzentrierter Schwefelsäure mit ko- rintlifarbiger Farbe löst und durch Wasser in schwarzen Flocken ausgefällt wird.
30,5 Teile des p-Amiiioazol-,örpers aus diazotiertem o-Toliii(lin -# 1-A#milio-2-iiipli- 1,ol-lithyläthei, werden in 40 Teilen Salzsäure 20' B6 und etwa. 4500 Teilen Wasser gelöst und mit<B>6,9</B> Teilen Natriumnifrit in der üb lichen -V#leise diazotiert. Die so gebildete Diazoverbindung wird durch Filtrieren von
Process for the preparation of a black azo dye. It has been found that a black azo dye is obtained if the diazo compound of p-aminoazole, zirper from diazofiated o-toluidine <B> + </B> i <B> - </B> Amino-2- Naplitoläthyläther combined with 2 -3-Oxynaphioes <iL [ref-naphialid.
When dried, the dye forms a sweet, metallic powder that is insoluble in water, soluble in concentrated sulfuric acid in a corinthian color and is precipitated from this solution by water in black floeks. But it can also be used on the fiber and then provides green-black colorations with excellent fastness properties.
<I>Example<B>:</B> </I> removed minor impurities. 81-, 3 parts of 2. 3-OxynaT] itoesäureiss-na-plit-alid are added to 20 parts of sodium hydroxide solution <B> 36 '</B> B6 and <B> 900 </B> parts of water with the addition of an aqueous solution of <B> 13 </B> parts of sodium acetate and 2 parts of turkish rotijl dissolved in the heat, cooled with ice to about <B> 10 '</B> and filtered. This solution is used to run into the diazo solution at <B> 10 </B> to <B> 15 '</B> while stirring. To.
At the end of the coupling, the dyestuff produced is filtered off. It forms a metallic, shiny, black powder that dissolves in concentrated sulfuric acid with a corintle color and is precipitated in black flakes by water.
30.5 parts of the p-Amiiioazol-, örpers from diazotized o-Toliii (lin - # 1-A # milio-2-iiipli- 1, ol-lithyläthei, are in 40 parts of hydrochloric acid 20 'B6 and about 4500 parts of water dissolved and gently diazotized with <B> 6.9 </B> parts of sodium nifrite in the usual -V # The diazo compound thus formed is filtered off by
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE99672X | 1921-06-13 | ||
| CH99283T | 1922-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH99672A true CH99672A (en) | 1923-06-16 |
Family
ID=25705526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH99672D CH99672A (en) | 1921-06-13 | 1922-06-12 | Process for the preparation of a black azo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH99672A (en) |
-
1922
- 1922-06-12 CH CH99672D patent/CH99672A/en unknown
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