CH169956A - Process for the preparation of a substantive azo dye. - Google Patents
Process for the preparation of a substantive azo dye.Info
- Publication number
- CH169956A CH169956A CH169956DA CH169956A CH 169956 A CH169956 A CH 169956A CH 169956D A CH169956D A CH 169956DA CH 169956 A CH169956 A CH 169956A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- azo dye
- diazotized
- coupled
- acid
- Prior art date
Links
- 239000000987 azo dye Substances 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- QEZZCWMQXHXAFG-UHFFFAOYSA-N 8-aminonaphthalene-2-sulfonic acid Chemical compound C1=C(S(O)(=O)=O)C=C2C(N)=CC=CC2=C1 QEZZCWMQXHXAFG-UHFFFAOYSA-N 0.000 claims description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000008103 glucose Substances 0.000 claims description 3
- GHBWBMDGBCKAQU-UHFFFAOYSA-N 5-amino-2-[2-(4-nitro-2-sulfophenyl)ethenyl]benzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC(N)=CC=C1C=CC1=CC=C([N+]([O-])=O)C=C1S(O)(=O)=O GHBWBMDGBCKAQU-UHFFFAOYSA-N 0.000 claims description 2
- 229920000742 Cotton Polymers 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 2
- 239000011449 brick Substances 0.000 claims 1
- 239000000975 dye Substances 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000006193 diazotization reaction Methods 0.000 description 2
- 230000011987 methylation Effects 0.000 description 2
- 238000007069 methylation reaction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 125000004218 chloromethyl group Chemical group [H]C([H])(Cl)* 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 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 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Coloring (AREA)
- Paper (AREA)
Description
Verfahren zur Herstellung eines substantiven Azofarbstoifes. Vorliegendes Patent bezieht sich auf ein Verfahren zur Herstellung eines substantiven Azofarbstoffes, dadurch gekennzeichnet, dass man 4-Nitro-4'-acninostilben-2.2'-disulfosäure diazotiert, mit 1-Naphthylamin-7-sulfosäure kuppelt, weiter diazotiert, mit Phenol kuppelt, methyliert und mit Traubenzucker und Al- kalien reduziert.
Er bildet ein braunschwarzes Pulver, das sich in Wasser mit roter und in konzentrier ter Schwefelsäure mit grüner Farbe löst. Er färbt Baumwolle ziegelrot und ist von hervorragender Lichtechtheit.
<I>Beispiel:</I> 40 kg 4-Nitro-4'-aminostilben-2.2'-disulfo- säure werden in bekannter Weise diazotiert. Die Diazotierung fliesst bei 5 in eine mit Hilfe von 40 kg Soda hergestellte Lösung von 22,3 kg 1 - Naphthylamin - 7 - sulfo- säure. Nach beendeter Kupplung wird der Monoazofarbstoff ausgesalzen und abfiltriert. Die abgeschiedene Paste wird in Wasser ge löst, dann mit 48 kg roher Salzsäure versetzt und bei 5 bis 10 mit 6,
9 kg Natriumnitrit weiterdiazotiert. Die Diazotierungsflüssigkeit fliesst in eine wässerige Lösung von 9,4 kg Phenol und 50 kg Soda. Nach beendeter Kupp lung wird neutral gestellt, ausgesalzen und abfiltriert. Die Paste wird in ,etwa 600 Liter Wasser, denen 60 kg Soda zugesetzt sind, ge löst, dann mit 90 kg p-Toluolsulfosäuremethyl- ester und 300 Liter Alkohol versetzt. Man kocht unter Rühren 6 Stunden, scheidet hier auf das Methylierungsprodukt mit Salz ab und filtriert.
Dann wird die Paste mit 1200 bis 1500 Liter Wasser unter Zusatz von 84 kg Lauge 33 B6 gelöst und mit einer konzen trierten Lösung von 22,5 kg Traubenzucker versetzt. Man rührt solange bei etwa 60 C, bis die Reduktion beendet ist und scheidet hierauf den fertigen Farbstoff mit Salz ab. Die Methylierung lässt sich auch auf an dere bekannte Weise vornehmen, zum Bei spiel durch Behandlung des Farbstoffes im Autoklaven mit Ohlormethyl unter Druck bei Gegenwart eines säurebindenden Mittels.
Process for the production of a substantive azo dye. The present patent relates to a process for the preparation of a substantive azo dye, characterized in that 4-nitro-4'-acninostilbene-2.2'-disulfonic acid is diazotized, coupled with 1-naphthylamine-7-sulfonic acid, further diazotized, coupled with phenol, methylated and reduced with glucose and alkalis.
It forms a brownish black powder that dissolves in water with red and in concentrated sulfuric acid with green color. It dyes cotton brick-red and is extremely lightfast.
<I> Example: </I> 40 kg of 4-nitro-4'-aminostilbene-2.2'-disulfonic acid are diazotized in a known manner. At 5, the diazotization flows into a solution of 22.3 kg of 1-naphthylamine-7-sulfonic acid prepared with the aid of 40 kg of soda. After coupling has ended, the monoazo dye is salted out and filtered off. The separated paste is dissolved in water, then mixed with 48 kg of crude hydrochloric acid and at 5 to 10 with 6,
9 kg of sodium nitrite further diazotized. The diazotization liquid flows into an aqueous solution of 9.4 kg of phenol and 50 kg of soda. After the coupling is complete, it is neutralized, salted out and filtered off. The paste is dissolved in about 600 liters of water to which 60 kg of soda are added, then 90 kg of methyl p-toluenesulfate and 300 liters of alcohol are added. The mixture is boiled for 6 hours with stirring, the methylation product is deposited here with salt and filtered.
Then the paste is dissolved with 1200 to 1500 liters of water with the addition of 84 kg of liquor 33 B6 and mixed with a concentrated solution of 22.5 kg of glucose. The mixture is stirred at about 60 ° C. until the reduction has ended and the finished dye is then separated off with salt. The methylation can also be carried out in other known ways, for example by treating the dye in an autoclave with chloromethyl under pressure in the presence of an acid-binding agent.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE169956X | 1932-02-29 | ||
| CH166498T | 1933-02-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH169956A true CH169956A (en) | 1934-06-15 |
Family
ID=25718319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH169956D CH169956A (en) | 1932-02-29 | 1933-02-14 | Process for the preparation of a substantive azo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH169956A (en) |
-
1933
- 1933-02-14 CH CH169956D patent/CH169956A/en unknown
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