CH196346A - Process for the preparation of a monoazo dye. - Google Patents
Process for the preparation of a monoazo dye.Info
- Publication number
- CH196346A CH196346A CH196346DA CH196346A CH 196346 A CH196346 A CH 196346A CH 196346D A CH196346D A CH 196346DA CH 196346 A CH196346 A CH 196346A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- preparation
- monoazo dye
- pyrazolone
- red
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 5
- 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 4
- 238000002360 preparation method Methods 0.000 title description 2
- 239000000975 dye Substances 0.000 claims description 16
- 150000008049 diazo compounds Chemical class 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 210000002268 wool Anatomy 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- JEXVQSWXXUJEMA-UHFFFAOYSA-N pyrazol-3-one Chemical class O=C1C=CN=N1 JEXVQSWXXUJEMA-UHFFFAOYSA-N 0.000 description 3
- 229940083761 high-ceiling diuretics pyrazolone derivative Drugs 0.000 description 2
- DTQVHBIQMCFTSZ-UHFFFAOYSA-N 4-amino-3-chloro-5-methylbenzenesulfonic acid Chemical compound CC1=CC(S(O)(=O)=O)=CC(Cl)=C1N DTQVHBIQMCFTSZ-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002429 hydrazines Chemical class 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 230000003381 solubilizing effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 150000003455 sulfinic acids Chemical class 0.000 description 1
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Coloring (AREA)
Description
Verfahren zur Herstellung eines Nonoazofarbstoffes. Es wurde gefunden, dass man zu neuen Monoazofarbstoffen gelangen kann, wenn man Pyrazolonabkömmlinge der allgemeinen For- rnel
EMI0001.0006
in der R, und R2 einwertige, gegebenenfalls substituierte Kohlenwasserstoffreste bedeuten, mit Diazoverbindungen kuppelt und hierbei die Komponenten so wählt,
dass der entste hende Farbstoff mindestens eine löslichma- chende ('Truppe wie die Sulfo- oder Carbosyl- gruppe enthält.
Die neuen Farbstoffe zeichnen sich gegen über vergleichbaren Pyrazolonfarbstoffen durch eine rötere Nuance aus. Sie sind sehr licht echt und egalisieren besonders gut.
Die als Ausgangsstoffe verwendeten Sul- fonpyrazolone können durch Kondensation von r-Halogenacetessigestern mit sulfinsauren Salzen und anschliessende Umsetzung der Reaktionsprodukte mit Hydrazinen zu Pyrazo- lonabkömmlingen dargestellt werden.
Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines Monoazo- farbstoffes. Das Verfahren ist dadurch ge kennzeichnet, dass man 1-Phenyl-3-methyl- sulfonmethyl-5-pyrazolon mit der Diazover- bindung von 3-Chlor-2-amir)o-l-methylber)zol- 5-sulfonsäure kuppelt. Der erhaltene neue Farbstoff ist ein rotgelbes Pulver, das sich in Wasser leicht löst. Er färbt Wolle in sau rem Bade in rotstichig gelben Tönen von sehr guter Lichtechtheit.
Der Farbstoff ist durch hervorragendes Egalisieren ausgezeich- n et.
<I>Beispiel:</I> 252 Gewichtsteile 1-Phenyl-3-metbylsul- fonmethyl-5-pyrazolon werden mit<B>250</B> Ge wichtsteilen Soda in 5000 Gewichtsteilen Wasser verrührt. Bei 0-5 C wird dann unter Rühren die Suspension der Diazoverbin- dung von 222 Gewichtsteilen 3-Chlor-2-amino- 1-methylbenzol-5-sulfonsäure langsam zuge geben. Die Kupplung ist schnell beendet. Der Farbstoff wird in üblicher Weise isoliert. Er färbt Wolle in saurem Bade in rotstichig gelben Tönen von sehr guter Lichtechtheit. Der Farbstoff ist durch hervorragendes Egali sieren ausgezeichnet.
Process for the preparation of a nonoazo dye. It has been found that new monoazo dyes can be obtained by using pyrazolone derivatives of the general formula
EMI0001.0006
in which R, and R2 are monovalent, optionally substituted hydrocarbon radicals, couples with diazo compounds and here the components are selected so
that the resulting dye contains at least one solubilizing group such as the sulfo or carbosyl group.
The new dyes are distinguished from comparable pyrazolone dyes by a redder shade. They are very light and equalize particularly well.
The sulfonpyrazolones used as starting materials can be prepared by condensation of r-haloacetoacetic esters with sulfinic acid salts and subsequent reaction of the reaction products with hydrazines to give pyrazolone derivatives.
The present patent relates to a process for the production of a monoazo dye. The process is characterized in that 1-phenyl-3-methyl-sulfonmethyl-5-pyrazolone is coupled with the diazo compound of 3-chloro-2-amir) o-1-methylber) zol-5-sulfonic acid. The new dye obtained is a red-yellow powder that dissolves easily in water. It dyes wool in an acid bath in reddish yellow shades of very good lightfastness.
The dye is characterized by excellent leveling.
<I> Example: </I> 252 parts by weight of 1-phenyl-3-methylsulfonmethyl-5-pyrazolone are stirred with <B> 250 </B> parts by weight of soda in 5000 parts by weight of water. The suspension of the diazo compound of 222 parts by weight of 3-chloro-2-amino-1-methylbenzene-5-sulfonic acid is then slowly added at 0-5 ° C. with stirring. The clutch ends quickly. The dye is isolated in the usual way. It dyes wool in an acid bath in reddish yellow shades of very good lightfastness. The dye is distinguished by excellent leveling.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE196346X | 1935-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH196346A true CH196346A (en) | 1938-03-15 |
Family
ID=5754255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH196346D CH196346A (en) | 1935-12-07 | 1936-11-30 | Process for the preparation of a monoazo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH196346A (en) |
-
1936
- 1936-11-30 CH CH196346D patent/CH196346A/en unknown
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE682540C (en) | Process for the preparation of monoazo dyes | |
| DE676785C (en) | Process for the production of azo dyes | |
| DE614540C (en) | Process for the preparation of monoazo dyes | |
| DE650556C (en) | Process for the production of azo dyes | |
| DE416617C (en) | Process for the preparation of azo dyes | |
| DE609118C (en) | Process for the preparation of monoazo dyes | |
| DE540217C (en) | Process for the production of azo dyes | |
| CH180961A (en) | Process for the preparation of an azo dye. | |
| CH124137A (en) | Process for the preparation of a pyrazolone azo dye. | |
| CH125117A (en) | Process for the preparation of a pyrazolone azo dye. | |
| CH190034A (en) | Process for the preparation of an azo dye. | |
| CH238790A (en) | Process for the preparation of a new monoazo dye. | |
| CH204144A (en) | Process for the preparation of a water-soluble disazo dye. | |
| CH302404A (en) | Process for the preparation of a trisazo dye. | |
| CH172579A (en) | Process for the production of a chromium-containing dye. | |
| CH228935A (en) | Process for the preparation of a chromable azo dye. | |
| CH187431A (en) | Process for the production of an acidic wool dye of the anthraquinone series. | |
| CH183596A (en) | Process for the preparation of an azo dye. | |
| CH167032A (en) | Process for the production of a new azo dye. | |
| CH208537A (en) | Process for the preparation of a new water-soluble disazo dye. | |
| CH144302A (en) | Process for the preparation of an azo dye. | |
| CH194952A (en) | Process for the preparation of a new monoazo dye. | |
| CH300450A (en) | Process for the preparation of an acidic monoazo dye. | |
| CH348492A (en) | Process for the preparation of water-insoluble monoazo dyes | |
| CH188522A (en) | Process for the preparation of a new monoazo dye. |