CH100185A - Process for the preparation of a yellow azo dye. - Google Patents
Process for the preparation of a yellow azo dye.Info
- Publication number
- CH100185A CH100185A CH100185DA CH100185A CH 100185 A CH100185 A CH 100185A CH 100185D A CH100185D A CH 100185DA CH 100185 A CH100185 A CH 100185A
- Authority
- CH
- Switzerland
- Prior art keywords
- yellow
- dye
- preparation
- azo dye
- tones
- Prior art date
Links
- 239000000987 azo dye Substances 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 3
- 238000002360 preparation method Methods 0.000 title claims description 3
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000975 dye Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 229960004889 salicylic acid Drugs 0.000 claims description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 229920000742 Cotton Polymers 0.000 claims description 2
- 239000000460 chlorine Substances 0.000 claims description 2
- 229910052801 chlorine Inorganic materials 0.000 claims description 2
- 239000003086 colorant Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000344 soap Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000000203 mixture Substances 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 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
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical class [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 150000008049 diazo compounds Chemical class 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- CXKWCBBOMKCUKX-UHFFFAOYSA-M methylene blue Chemical compound [Cl-].C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 CXKWCBBOMKCUKX-UHFFFAOYSA-M 0.000 description 1
- 229960000907 methylthioninium chloride Drugs 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung eines gelben Azofarbstoffes. Ein gelber Azofarbstoff von wertvolleit Eigenschaften wird erhalten, wenn diazo- fierte p-Phenyleiidiamin-2-6-disulfosäure mit Salizylsäure gekuppelt wird. Dieser Farb stoff ist ein graugelbes bis violettes Pulver, das sich leicht in Wasser löst und mit Chrom- i"cetat auf Baumwolle gedruckt, grünstichig gelbe Töne von grosser Klarheit und sehr guter Seifen- und Chlorechflieit hervorbringt.
Ferner eignet sieh dieser Farbstoff zur Her stellung klarer gelber Lackfarben, die mit Methylenblau lebhafte G#rüntöne von gut-er Lichtechtheit geben.
<I>Beispiel:</I> <B>29,0</B> Gewichtsteile Mononatriumsalz der p-Phenylendiamin-2-6-disulfosä,ure werden in 120 Gewichtsteilen Wasser gelöst, mit<B>15</B> Ge wichtsteilen. Salzsäure von<B>30</B> % versetzt und mit Eis auf<B>10'</B> abgekühlt. Dazu gibt man eine Lösung von<B>6,9</B> Gewielitsteilen Natrium- nitrit in<B>50</B> Gewichtsteilen Wasser; die aus geschiedene Säure geht in Lösung; gleich darauf scheidet sieh die Diazoverbindung in gelblich weissen Blättchen aus.
Zu diesem Brei fügt man eine kalte Lösung von 14,0 Ge wichtsteilen Salizylsäure in<B>100</B> Gewichts teilen Wasser und der nötigen Menge Natron lauge, kühlt die Mischung mit Eis auf<B>0'</B> ab und lässt im Laufe einer Stunde eine<B>10</B> '/oige Lösung von<B>10</B> GewieUtsteilen Ätznatron unter Rühren einfliessen. Man lässt einige Stunden rühren und setzt dann so lange kon zentrierte Salzsäure zu, bis eine deutliche Blaufärbung von Kongo das Vorhandensein freier Salzsäure anzeigt.
Der Farbstoff schei- clet sieh aus; er wird abgesaugt und getrock- -net. Er stellt<B>je</B> naelt der Menge freier Salz säure mit der er getrocknet wurde, ein gelbes oder auch dunkelviolettes Pulver dar, das sich in Wasser leicht mit gelber Farbe löst.
Process for the preparation of a yellow azo dye. A yellow azo dye with valuable properties is obtained when diazo-fated p-phenyldiiamine-2-6-disulfonic acid is coupled with salicylic acid. This dye is a gray-yellow to violet powder that dissolves easily in water and, when printed on cotton with chrome acetate, produces greenish yellow tones of great clarity and very good soap and chlorine resistance.
This dye is also suitable for the manufacture of clear yellow lacquer colors which, with methylene blue, give lively green tones of good lightfastness.
<I> Example: </I> <B> 29.0 </B> parts by weight of the monosodium salt of p-phenylenediamine-2-6-disulfonic acid are dissolved in 120 parts by weight of water, with <B> 15 </B> Ge important. Hydrochloric acid of <B> 30 </B>% was added and cooled to <B> 10 '</B> with ice. A solution of <B> 6.9 </B> parts by weight of sodium nitrite in <B> 50 </B> parts by weight of water is added; the separated acid goes into solution; immediately afterwards the diazo compound separates out in yellowish white leaflets.
A cold solution of 14.0 parts by weight of salicylic acid in <B> 100 </B> parts by weight of water and the necessary amount of sodium hydroxide is added to this paste, and the mixture is cooled to <B> 0 '</B> with ice and allow a <B> 10 </B> '/ o solution of <B> 10 </B> parts by weight of caustic soda to flow in over the course of an hour while stirring. The mixture is left to stir for a few hours and then concentrated hydrochloric acid is added until the Congo is clearly blue in color, indicating the presence of free hydrochloric acid.
The dye looks shed; it is suctioned off and dried. It represents <B> depending </B> the amount of free hydrochloric acid with which it was dried, a yellow or dark purple powder that easily dissolves in water with a yellow color.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE100185X | 1921-05-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH100185A true CH100185A (en) | 1923-07-02 |
Family
ID=5648442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH100185D CH100185A (en) | 1921-05-04 | 1922-04-10 | Process for the preparation of a yellow azo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH100185A (en) |
-
1922
- 1922-04-10 CH CH100185D patent/CH100185A/en unknown
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