CH190627A - Process for the preparation of a dye. - Google Patents
Process for the preparation of a dye.Info
- Publication number
- CH190627A CH190627A CH190627DA CH190627A CH 190627 A CH190627 A CH 190627A CH 190627D A CH190627D A CH 190627DA CH 190627 A CH190627 A CH 190627A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- acid
- preparation
- heating
- water
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 5
- 238000002360 preparation method Methods 0.000 title claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- GTCAZWRERBLCFJ-UHFFFAOYSA-N 4-aminonaphthalene-1-carboxylic acid Chemical compound C1=CC=C2C(N)=CC=C(C(O)=O)C2=C1 GTCAZWRERBLCFJ-UHFFFAOYSA-N 0.000 claims description 3
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 3
- 150000008064 anhydrides Chemical class 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000004043 dyeing Methods 0.000 claims description 2
- FWFGVMYFCODZRD-UHFFFAOYSA-N oxidanium;hydrogen sulfate Chemical compound O.OS(O)(=O)=O FWFGVMYFCODZRD-UHFFFAOYSA-N 0.000 claims description 2
- 210000002268 wool Anatomy 0.000 claims description 2
- 239000000975 dye Substances 0.000 claims 3
- 238000009835 boiling Methods 0.000 claims 1
- 239000007795 chemical reaction product Substances 0.000 claims 1
- 238000009833 condensation Methods 0.000 claims 1
- 230000005494 condensation Effects 0.000 claims 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 229960000583 acetic acid Drugs 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
Landscapes
- Coloring (AREA)
Description
Verfahren zur Darstellung eines Farbstoffes. Gegenstand dieses Zusatzpatentes ist ein Verfahren zur Darstellung eines Farbstoffes, welches dadurch gekennzeichnet ist, dass man 4-Amino-sulfo-1.8-naphthalsäure, die durch Erhitzen von 4-Aminonaphtbalsäure oder deren Anhydrid mit einem Gemisch von Schwefel- säuremonobydrat und 20 o/oigem Oleum bei 50-60o C, Eingiessen in Wasser, Absaugen und Neutraiwaschen erhältlich ist, mit der Verbindung folgender Formel
EMI0001.0009
in Gegenwart von Natriumbisulfitlauge kon densiert.
Beispiel: 30 Gewichtsteile 4-Amino-sulfo-1.8-naph- thalsäure, die durch Erhitzen von 4-Amino- naphthalsäure oder deren Anhydrid mit einem Gemisch von Schwefelsäuremonohydrat und 20 o/oigem Oleum bei 50-60 o C, Eingiessen in Wasser, Absaugen und Neutralwaschen erhältlich ist,
und 50 Gewichtsteile einer Verbindung von der Formel
EMI0001.0021
werden mit 500 Teilen Natriumbisulfitlauge 40 o Bd und 100 Teilen Wasser mehrere Stun den zum Sieden erhitzt. Nach dem Erkalten hat sich der Farbstoff als gelbe, zähe Masse abgeschieden; er wird von der Bisulfitlauge abgetrennt und unter Erwärmen in Wasser gelöst. Aus der filtrierten Lösung wird durch Zusatz von Mineralsäuren ein gelber, flockiger Niederschlag gefällt. Er löst sich in heissem Wasser ziemlich schwer mit grünstickig gelber Farbe; die Lösung in Eisessig oder Äthyl- alkohol ist gelb und zeigt grüne Fluoreszenz. Aus saurem Bade wird Wolle in klaren gelben Tönen angefärbt.
Die Färbungen können in üblicher Weise nachchromiert werden und sind von sehr guten Echtheiten.
Process for the preparation of a dye. The subject of this additional patent is a process for the preparation of a dye, which is characterized in that 4-amino-sulfo-1.8-naphthalic acid, which is obtained by heating 4-aminonaphthalic acid or its anhydride with a mixture of sulfuric acid monobydrate and 20 o / oigem Oleum at 50-60o C, pouring into water, suction and neutral washing is available with the compound of the following formula
EMI0001.0009
condenses in the presence of sodium bisulfite liquor.
Example: 30 parts by weight of 4-amino-sulfo-1.8-naphthalic acid, obtained by heating 4-amino-naphthalic acid or its anhydride with a mixture of sulfuric acid monohydrate and 20% oleum at 50-60 ° C, pouring into water, Suction and neutral washing is available,
and 50 parts by weight of a compound of the formula
EMI0001.0021
are heated to the boil for several hours with 500 parts of sodium bisulfite liquor 40 o Bd and 100 parts of water. After cooling, the dye has deposited as a yellow, viscous mass; it is separated from the bisulfite liquor and dissolved in water with heating. A yellow, flaky precipitate is precipitated from the filtered solution by adding mineral acids. It is rather difficult to dissolve in hot water with a greenish yellow color; the solution in glacial acetic acid or ethyl alcohol is yellow and shows green fluorescence. Acid baths are used to dye wool in clear yellow tones.
The dyeings can be re-chrome-plated in the usual way and have very good fastness properties.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE190627X | 1934-07-14 | ||
| CH186559T | 1935-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH190627A true CH190627A (en) | 1937-04-30 |
Family
ID=25721394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH190627D CH190627A (en) | 1934-07-14 | 1935-07-12 | Process for the preparation of a dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH190627A (en) |
-
1935
- 1935-07-12 CH CH190627D patent/CH190627A/en unknown
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