CH144499A - Process for preparing a coloring reaction product obtained from a monoazo dye. - Google Patents
Process for preparing a coloring reaction product obtained from a monoazo dye.Info
- Publication number
- CH144499A CH144499A CH144499DA CH144499A CH 144499 A CH144499 A CH 144499A CH 144499D A CH144499D A CH 144499DA CH 144499 A CH144499 A CH 144499A
- Authority
- CH
- Switzerland
- Prior art keywords
- reaction product
- dye
- preparing
- monoazo dye
- product obtained
- Prior art date
Links
- 239000007795 chemical reaction product Substances 0.000 title claims description 3
- NYGZLYXAPMMJTE-UHFFFAOYSA-M metanil yellow Chemical group [Na+].[O-]S(=O)(=O)C1=CC=CC(N=NC=2C=CC(NC=3C=CC=CC=3)=CC=2)=C1 NYGZLYXAPMMJTE-UHFFFAOYSA-M 0.000 title claims description 3
- 238000004040 coloring Methods 0.000 title description 2
- 238000004519 manufacturing process Methods 0.000 title description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- GEMYPJWUMFLPSQ-UHFFFAOYSA-N (2-methylphenyl)sulfamic acid Chemical compound CC1=CC=CC=C1NS(O)(=O)=O GEMYPJWUMFLPSQ-UHFFFAOYSA-N 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 2
- 229910006069 SO3H Inorganic materials 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000010985 leather Substances 0.000 claims description 2
- 239000007800 oxidant agent Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 3
- 238000006243 chemical reaction Methods 0.000 claims 1
- 239000000975 dye Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000001049 brown dye Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000991 leather dye Substances 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Coloring (AREA)
Description
verfahren zur Darstellung eines aus einem Honoazofarbstoff erhaltenen, färbenden Reaktionsproduktes. Es wurde gefunden, dass ein wertvoller brauner Farbstoff von noch unbekannter Konstitution entsteht, wenn man die Ver- bindung; o-Toluidinsulfosäure (CHF : l,NH. 2,S031:1 : 4)-azo-resorcin bei Gegenwart von wässerigem Ammoniak mit Oxydationsmit teln, vorzugsweise mit Luft behandelt. Der neue Farbstoff stellt ein dunkles Pulver dar, das sich in Wasser mit gelbbrauner, in kon zentrierter Schwefelsäure mit brauner Farbe löst.
Im Gegensatz zum Ausgangsfarbstoff färbt er Wolle und Seide kaum mehr an, da gegen erzeugt er auf Leder ein schönes, sat tes Braun, dessen Farbton von dem Grade der Oxydation abhängig ist. Diese Lederfärbun gen sind ausgezeichnet durch hervorragende Echtheit gegen Licht und alkalischen Fett- liquor.
<I>Beispiel:</I> Eine Lösung von 24 Teilen des Monoazo- farbstoffes aus o-Toluidinsulfosäure <B>(CH,</B> l,NH2 : 2,S03H : 4) und Resorcin in<B>100</B> bis 150 Teilen Wasser wird mit 30-50 Teilen Ammoniak von- 20% versetzt und bei zirka. 80 C unter Rühren Luft durchgeleitet. Die anfänglich gelbe Lösung wird bald tief braun. Die Oxydation ist beendet, wenn Nuance und Stärke der Lösung sich nicht mehr ändern, was nach einigen Stunden der Fall ist. Alsdann wird mit Salzsäure ange säuert, mit Kochsalz gefällt, filtriert und ge trocknet.
Der Farbstoff kann auch direkt durch Eindampfen der ammoniakalischen Lösung gewonnen werden.
Process for preparing a coloring reaction product obtained from a honoazo dye. It has been found that a valuable brown dye of as yet unknown constitution is formed when the compound; o-Toluidinsulfonic acid (CHF: 1, NH. 2, S031: 1: 4) -azo-resorcinol in the presence of aqueous ammonia with oxidizing agents, preferably with air. The new dye is a dark powder that dissolves in water with a yellow-brown color, and in concentrated sulfuric acid with a brown color.
In contrast to the original dye, it hardly stains wool and silk, whereas it produces a beautiful, rich brown on leather, the color of which depends on the degree of oxidation. These leather dyes are distinguished by their excellent fastness to light and alkaline fatty liquor.
<I> Example: </I> A solution of 24 parts of the monoazo dye from o-toluidinesulfonic acid (CH, 1, NH2: 2, SO3H: 4) and resorcinol in <B> 100 < / B> up to 150 parts of water are mixed with 30-50 parts of 20% ammonia and at approx. 80 C air passed through with stirring. The initially yellow solution soon turns deep brown. The oxidation is over when the shade and strength of the solution no longer change, which is the case after a few hours. It is then acidified with hydrochloric acid, precipitated with common salt, filtered and dried.
The dye can also be obtained directly by evaporating the ammoniacal solution.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE144499X | 1928-02-20 | ||
| CH142445T | 1932-02-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH144499A true CH144499A (en) | 1930-12-31 |
Family
ID=25714061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH144499D CH144499A (en) | 1928-02-20 | 1929-02-18 | Process for preparing a coloring reaction product obtained from a monoazo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH144499A (en) |
-
1929
- 1929-02-18 CH CH144499D patent/CH144499A/en unknown
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