CH201960A - Process for the preparation of a water-soluble azo dye. - Google Patents
Process for the preparation of a water-soluble azo dye.Info
- Publication number
- CH201960A CH201960A CH201960DA CH201960A CH 201960 A CH201960 A CH 201960A CH 201960D A CH201960D A CH 201960DA CH 201960 A CH201960 A CH 201960A
- Authority
- CH
- Switzerland
- Prior art keywords
- water
- preparation
- soluble azo
- azo dye
- soluble
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 6
- 239000000987 azo dye Substances 0.000 title claims description 5
- 239000000975 dye Substances 0.000 claims description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 7
- 230000002378 acidificating effect Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- TYMLOMAKGOJONV-UHFFFAOYSA-N 4-nitroaniline Chemical compound NC1=CC=C([N+]([O-])=O)C=C1 TYMLOMAKGOJONV-UHFFFAOYSA-N 0.000 claims description 3
- -1 phosphorous acid ester Chemical class 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- PPHQUIPUBYPZLD-UHFFFAOYSA-N n-ethyl-n-methylaniline Chemical compound CCN(C)C1=CC=CC=C1 PPHQUIPUBYPZLD-UHFFFAOYSA-N 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 239000010446 mirabilite Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- RSIJVJUOQBWMIM-UHFFFAOYSA-L sodium sulfate decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=O RSIJVJUOQBWMIM-UHFFFAOYSA-L 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000008049 diazo compounds Chemical class 0.000 description 1
- 125000000664 diazo group Chemical class [N-]=[N+]=[*] 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- FAIAAWCVCHQXDN-UHFFFAOYSA-N phosphorus trichloride Chemical compound ClP(Cl)Cl FAIAAWCVCHQXDN-UHFFFAOYSA-N 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 1
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Coloring (AREA)
Description
Verfahren zur Herstellung eines wasserlöslichen Azofarbstoües. Vorliegende Erfindung bezieht sich auf die Herstellung wasserlöslicher Azofarbstoffe durch Kuppeln von Diazoverbindungen mit solchen aromatischen Basen, in denen ein Wasserstoffatom der Aminogruppe durch einen Oxyalkylrest substituiert ist, der mit phos- phoriger Säure oder Phosphorsäure zu einem sauren Ester verestert ist und in denen das andere Wasserstoffatom der Aminogruppe durch einen Alkylrest substituiert sein kann.
Dabei werden die Komponenten derart ge wählt, dass ausser dem Phosphorig- bezw. Phosphorsäurerest keine weiteren sauren Grup pen, wie die Garboxyl- oder Sulfogruppe, im .Molekül enthalten sind.
Eine Abänderung des Verfahrens besteht darin, dass man solche Farbstoffe, die in der Kupplungskomponente eine Oxyalkylamino- bezw. Oxyalkylalkylaminogruppe enthalten, in die sauren Ester der phosphorigen Säure oder der Phosphorsäure überführt.
Die so erhältlichen Farbstoffe eignen sich im allgemeinen zum Färben von Wolle, Seide und insbesondere von Acetatseide. Sie ziehen auf letztere Faser auf dem Glaubersalzbad in gelben, orangen, roten, violetten und blauen Tönen auf und übertreffen in den Nassecht- heiten zum Teil die bekannten wasserlöslicben Acetatseidenfarbstoffe; ausserdem zeigen sie auf Acetatseidenkreppgewebe ein besseres Durchfärbevermögen als diese.
Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines wasser löslichen Azofarbstoffes. Das Verfahren ist dadurch gekennzeichnet, dass man diazotiertes p-Nitranilin mit dem sauren Phosphorigsäure- ester des Oxyäthylmethylanilins kuppelt. Der neue Farbstoff stellt ein rotes, in Wasser gut lösliches Pulver dar und färbt Acetat seide in gelbstichig scharlachfarbenen Tönen.
<I>Beispiel:</I> 13,8 g p-Nitranilin werden in 100 cm3 Wasser angeschlämmt und nach Zugabe von 6,9 g Natriumnitrit durch Zusatz von 28 cm' Salzsäure von 19,5 B6 bei Zimmertempera tur diazotiert. Diese Diazolösung fliesst bei etwa 5 C zu der schwach essigsauren Lösung des sauren Phosphorigsäureesters, welcher aus 15,1 g Ogyäthylmethylanilin durch Umsetzung mit der entsprechenden Menge Phosphortri- chlorid gewonnen wird.
Die Kupplung wird durch Zusatz von Natriumacetatlösung bis zur essigsauren Reaktion beendet. Der Farb stoff fällt als rotes Pulver an und wird nach dem Absaugen bei mässiger Temperatur ge trocknet. Er ist in Wasser gut löslich und färbt aus der wässerigen Flotte in Gegen wart von Glaubersalz Acetatseide in gelb stickig scharlachfarbenen Tönen. Die Ätz. eigenschaften und Nassechtheiten sind gut. Gegen Acetatseidenborkenkrepp zeigt er ein gutes Durchfärbevermögen.
Process for the preparation of a water-soluble azo dye. The present invention relates to the preparation of water-soluble azo dyes by coupling diazo compounds with aromatic bases in which one hydrogen atom of the amino group is substituted by an oxyalkyl radical which is esterified with phosphoric acid or phosphoric acid to form an acidic ester and in which the other hydrogen atom the amino group can be substituted by an alkyl radical.
The components are chosen in such a way that apart from the phosphorus or Phosphoric acid no other acidic groups, such as the carboxyl or sulfo group, are contained in the .Molekül.
A modification of the process consists in the fact that such dyes which contain an Oxyalkylamino- bezw in the coupling component. Oxyalkylalkylamino group, converted into the acidic ester of phosphorous acid or phosphoric acid.
The dyes obtainable in this way are generally suitable for dyeing wool, silk and especially acetate silk. They are absorbed on the latter fiber in the Glauber's salt bath in yellow, orange, red, violet and blue tones and in terms of wet fastness they sometimes exceed the known water-soluble acetate silk dyes; in addition, they show a better penetration capacity than this on acetate silk crepe fabric.
The present patent relates to a process for the preparation of a water-soluble azo dye. The process is characterized in that diazotized p-nitroaniline is coupled with the acidic phosphorous acid ester of oxyethylmethylaniline. The new dye is a red powder that is readily soluble in water and colors acetate silk in yellowish scarlet tones.
<I> Example: </I> 13.8 g of p-nitroaniline are suspended in 100 cm3 of water and, after adding 6.9 g of sodium nitrite, diazotized by adding 28 cm of hydrochloric acid of 19.5 B6 at room temperature. This diazo solution flows at about 5 ° C. to the weakly acetic acid solution of the acidic phosphorous acid ester, which is obtained from 15.1 g of ogyethylmethylaniline by reaction with the corresponding amount of phosphorus trichloride.
The coupling is terminated by adding sodium acetate solution until the acetic acid reaction occurs. The dye is obtained as a red powder and is dried at a moderate temperature after vacuuming. It is readily soluble in water and, in the presence of Glauber's salt, dyes acetate silk in yellow, sticky, scarlet shades from the watery liquor. The etch. properties and wet fastness are good. Against acetate silk bark crepe, it shows good penetration properties.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201960X | 1936-11-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH201960A true CH201960A (en) | 1938-12-31 |
Family
ID=5768937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH201960D CH201960A (en) | 1936-11-21 | 1937-11-09 | Process for the preparation of a water-soluble azo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH201960A (en) |
-
1937
- 1937-11-09 CH CH201960D patent/CH201960A/en unknown
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