CH192851A - Process for the preparation of a chromable monoazo dye. - Google Patents
Process for the preparation of a chromable monoazo dye.Info
- Publication number
- CH192851A CH192851A CH192851DA CH192851A CH 192851 A CH192851 A CH 192851A CH 192851D A CH192851D A CH 192851DA CH 192851 A CH192851 A CH 192851A
- Authority
- CH
- Switzerland
- Prior art keywords
- red
- chromable
- acid
- monoazo dye
- preparation
- Prior art date
Links
- 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
- 238000000034 method Methods 0.000 title claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 3
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid Chemical compound NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- 210000002268 wool Anatomy 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 239000003929 acidic solution Substances 0.000 claims description 2
- 230000002378 acidificating effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000007747 plating Methods 0.000 claims description 2
- 239000000975 dye Substances 0.000 claims 2
- 239000001044 red dye Substances 0.000 claims 1
- 239000000243 solution Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 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
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 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
- 150000008049 diazo compounds Chemical class 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- -1 m-aminobenzoyl Chemical group 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
Landscapes
- Optical Filters (AREA)
Description
Verfahren zur Herstellung eines chromierbaren Honoazofarbstoffes. Es wurde gefunden, dass man zu einem wertvollen, chromierbaren Monoazofarbstoff gelangt, wenn man eine Aminosulfonsäure von folgender Formel
EMI0001.0006
diazotiert und mit 2-Amino-8-oxyriaphthalin- 6-sulfonsäure in saurer Lösung kombiniert.
Der neue Farbstoff bildet ein rotes Pul ver, löslich in Wasser mit roter, in konzen trierter Schwefelsäure mit braunroter Farbe und gibt in saurem Bad auf Wolle reine rote Färbungen, die durch Nachehromieren ohne wesentliche Änderung des Farbtones ausgezeichnet licht- und walkecht werden, bei gleichzeitig vorzüglicher Ätzbarkeit.
<I>Beispiel:</I> 50,8 Teile der Aminosulfonsäure folgen der Formel:
EMI0001.0015
erhalten durch Kondensation von 4-(m-Amino- benzoyl)-phenylendiamin-2-sulfonsäure mit 1-Oxy-2-carboxybenzol-4-sulfochlorid in wäs seriger Lösung werden unter Zusatz von Soda in heissem Wasser gelöst, abgekühlt und mit 7 Teilen Natriumnitrit versetzt.
Die Lösung lässt man langsam unter Rühren in 60 Teile konzentrierte, mit Eis und Wasser verdünnte Salzsäure einfliessen. Die schwer lösliche Diazoverbindung wird filtriert, mit Wasser angerührt und langsam in eine Lösung von 26,2 Teilen Natriumsalz der 2-Amino-8-oxynaphthalin-6-sulfonsäure und 20 Teilen Natriumacetat unter Rühren ein getragen. Die Kupplung beginnt sofort und ist nach 24 Stunden beendet. Die Lösung wird auf etwa 400 erwärmt, der Farbstoff mit Kochsalz ausgesalzen, filtriert und ge trocknet.
Er bildet ein rotes Pulver, löslich in Wasser mit roter, in konzentrierter Schwefel säure mit braunroter Farbe und gibt in saurem Bad auf Wolle reine rote Färbungen, die durch Nachchromieren ohne wesentliche Än derung des Farbtones ausgezeichnet licht- und walkecht werden, bei gleichzeitig vor züglicher Ätzbarkeit.
Process for the production of a chromable honoazo dye. It has been found that a valuable, chromable monoazo dye is obtained by using an aminosulfonic acid of the following formula
EMI0001.0006
diazotized and combined with 2-amino-8-oxyriaphthalene-6-sulfonic acid in acidic solution.
The new dye forms a red powder, soluble in water with red, in concentrated sulfuric acid with a brownish-red color and gives pure red dyeings on wool in an acid bath, which are extremely lightfast and millfast by re-homing without any significant change in color excellent etchability.
<I> Example: </I> 50.8 parts of the aminosulfonic acid follow the formula:
EMI0001.0015
obtained by condensation of 4- (m-aminobenzoyl) -phenylenediamine-2-sulfonic acid with 1-oxy-2-carboxybenzene-4-sulfochloride in aqueous solution are dissolved with the addition of soda in hot water, cooled and with 7 parts Sodium nitrite added.
The solution is slowly poured into 60 parts of concentrated hydrochloric acid diluted with ice and water while stirring. The sparingly soluble diazo compound is filtered, mixed with water and slowly introduced into a solution of 26.2 parts of the sodium salt of 2-amino-8-oxynaphthalene-6-sulfonic acid and 20 parts of sodium acetate with stirring. The coupling starts immediately and ends after 24 hours. The solution is heated to about 400, the dye is salted out with sodium chloride, filtered and dried ge.
It forms a red powder, soluble in water with red, in concentrated sulfuric acid with a brownish-red color and gives pure red colorations to wool in an acidic bath, which after chrome-plating without any significant change in color become extremely light and whackfast, while at the same time being more attractive Etchability.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE192851X | 1935-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH192851A true CH192851A (en) | 1937-09-15 |
Family
ID=5736109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH192851D CH192851A (en) | 1935-07-01 | 1936-06-18 | Process for the preparation of a chromable monoazo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH192851A (en) |
-
1936
- 1936-06-18 CH CH192851D patent/CH192851A/en unknown
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