CH190624A - Process for the preparation of a dye. - Google Patents
Process for the preparation of a dye.Info
- Publication number
- CH190624A CH190624A CH190624DA CH190624A CH 190624 A CH190624 A CH 190624A CH 190624D A CH190624D A CH 190624DA CH 190624 A CH190624 A CH 190624A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- acid
- yellow
- preparation
- heating
- 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
- 239000002253 acid Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 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
- 239000007795 chemical reaction product Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- FWFGVMYFCODZRD-UHFFFAOYSA-N oxidanium;hydrogen sulfate Chemical compound O.OS(O)(=O)=O FWFGVMYFCODZRD-UHFFFAOYSA-N 0.000 claims description 3
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 3
- 230000002378 acidificating effect Effects 0.000 claims description 2
- 238000005406 washing Methods 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
- 238000009833 condensation Methods 0.000 claims 1
- 230000005494 condensation Effects 0.000 claims 1
- 238000004043 dyeing Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 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 description 2
- 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 1
- 229960000583 acetic acid Drugs 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid group Chemical group C(CCCCCCC\C=C/CCCCCCCC)(=O)O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000010792 warming Methods 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 Schwefelsäuremonohydrat und 20 o/oigem Ole- um bei 50-60 o C, Eingiessen des Reaktions produktes in Wasser, Absaugen und Neutral waschen, erhältlich ist, mit der Verbindung der Formel
EMI0001.0009
in Gegenwart von Natriumbisulfitlösung kon densiert.
<I>Beispiel:</I> 60 Gewichtsteile Sulfaminonaphthalsäure, die durch Erhitzen von 4-Aminonaphthalsäure oder deren Anhydrid mit einem Gemisch von Schwefelsäuremonohydrat und 20 o/oigem Ole- um bei 50-60 o C, Eingiessen des Reaktions produktes in Wasser, Absaugen und Neutral waschen, erhältlich ist, und 70 Gewichtsteile einer Verbindung der Formel
EMI0001.0018
werden in einer Mischung von 800 Raum teilen Natriumbisulfitlösung und 200 Raum teilen Wasser etwa 12 Stunden zum Sieden. erhitzt.
Der Farbstoff bat sich als zähe, gelbe Masse abgeschieden, er wird von der Lauge abgetrennt, in Wasser unter Erwärmen gelöst, filtriert und durch Ansäuern die freie Säure als hellgelber Niederschlag ausgefällt. Diese löst sich in heissem Wasser ziemlich schwer gelb mit grünlicher Fluoreszenz, in verdünnten Alkalien und Alkalicarbonaten sehr leicht mit gelber Farbe, in organischen Lösungsmitteln wie Eisessig oder Alkohol beim Erwärmen gelb mit grüner Fluoreszenz. Wolle wird aus schwach saurem Bade leuch tend gelb gefärbt, die nachchromierte Fär bung ist gelb und 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 monohydrate and 20% oleic at 50-60 o C, pouring the reaction product into water, suction and washing neutral, is available with the compound of formula
EMI0001.0009
condenses in the presence of sodium bisulfite solution.
<I> Example: </I> 60 parts by weight of sulfaminonaphthalic acid, which is obtained by heating 4-aminonaphthalic acid or its anhydride with a mixture of sulfuric acid monohydrate and 20% oleum at 50-60 ° C, pouring the reaction product into water, Aspirate and wash neutral, and 70 parts by weight of a compound of the formula
EMI0001.0018
In a mixture of 800 parts of sodium bisulfite solution and 200 parts of water to boil for about 12 hours heated.
The dye deposited as a viscous, yellow mass, it is separated from the lye, dissolved in water with warming, filtered and the free acid is precipitated as a light yellow precipitate by acidification. This dissolves in hot water rather difficultly yellow with greenish fluorescence, in dilute alkalis and alkali carbonates very easily with yellow color, in organic solvents such as glacial acetic acid or alcohol when heated yellow with green fluorescence. Wool is dyed bright yellow from weakly acidic baths; the post-chromium-plated dye is yellow and has very good fastness properties.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE190624X | 1934-07-14 | ||
| CH186559T | 1935-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH190624A true CH190624A (en) | 1937-04-30 |
Family
ID=25721391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH190624D CH190624A (en) | 1934-07-14 | 1935-07-12 | Process for the preparation of a dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH190624A (en) |
-
1935
- 1935-07-12 CH CH190624D patent/CH190624A/en unknown
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