CH100481A - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- CH100481A CH100481A CH100481DA CH100481A CH 100481 A CH100481 A CH 100481A CH 100481D A CH100481D A CH 100481DA CH 100481 A CH100481 A CH 100481A
- Authority
- CH
- Switzerland
- Prior art keywords
- fastness
- azo dye
- chloro
- preparation
- dye
- Prior art date
Links
- 239000000987 azo dye Substances 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title description 2
- 150000008049 diazo compounds Chemical class 0.000 claims description 4
- 239000000975 dye Substances 0.000 claims description 4
- HIHCTGNZNHSZPP-UHFFFAOYSA-N 4-chloro-3-methylaniline Chemical compound CC1=CC(N)=CC=C1Cl HIHCTGNZNHSZPP-UHFFFAOYSA-N 0.000 claims description 2
- 210000001015 abdomen Anatomy 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 241000282320 Panthera leo Species 0.000 claims 1
- 239000003513 alkali Substances 0.000 claims 1
- 238000004043 dyeing Methods 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000049 pigment Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 125000005462 imide group Chemical group 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Coloring (AREA)
Description
Verfahren zur Herstellung eines Azofarbstoffes. In den schweizerischen Patenten Nr. 99282 und 100372-78 und Nr.<B>1</B>00386-88 wurden Verfahren zur Herstellung von besonders echten Azofarbstoffen beschrieben, welche in der Kombination beliebiger Diazokomponenten mit 2 # 3-Oxynaphtoesäure-o-toluididen beste lien.
Es wurde nun gefunden, dass ein neuer wertvoller Azofarbstoff entsteht, wenn man die Diazoverbindung von 4-Chioi,-3-toluidin mit 2 # 3-Oxynaphtoesäure-5-Chlor-o-anisidid (NHa : OCHa : Cl = 1 : 2 : 5) kuppelt.
Es zeigte sich nämlich in weiterer Aus bildung des oben dargelegten Erfindungsge dankens, der die Erhöhung der Echtheit durch Einführung von Methylgruppen in o-Stellung zur Imidgruppe des 2.3-Oxynaphtoesäure- arylids bezweckt, daL;
in analoger Weise auch durch Einführung von Alkyloxy-, Ary 1- oxy- und Aralkylo.xygruppen in die gleiche o-Stellung Produkte von hervorragenden Eigen schaften, insbesondere besonders gesteigerter Bäuchechtheit erhalten werden. Neben den guten Eigenschaften der Produkte der Patente Nr. 99282 und 100372-78 und Nr.100386 bis 88 besitzen diese Körper noch eine jenen gegenüber gesteigerte Lichtechtheit.
Ausserdem zeigte sich, dass in der Gesamt gruppe dieser Kombinationen aus Diazöver- bindungen mit o-Alkyloxy- oder o-Aryloxy- oder o-Aralkyloxy @niliden der 2 # 3-Oxynaph- toesäure sich diejenigen Farbstoffe, welche in der Azokomponente oder in der Kupplungs komponente, ganz besonders aber die, welche in beiden halogensubstituiert sind, durch ganz besonders gute Bäuchechtheit auszeichnen,
die namentlich bei den doppelseitig haloge- nierten so hervorragend ist, wie sie bei Azo- farbstoffen bisher nicht beobachtet wurde.
Die Vereinigung der Komponenten kann ebenso, wie im Falle der Patente Nr. 99282 und 100372-78 und Nr. 100386-88 ent weder in wässeriger Lösung erfolgen, wobei ein Pigmentfarbstoff erhalten wird, oder es kann die Darstellung dieses Pigmentes auf dem Gewebe oder einem sonstigen Substrat erfolgen, wodurch eine Färbung von der oben geschilderten Echtheit erhalten .wird.
Beispiet Die aus 14,1 g 4-Chlor-3-toluidin in üb licher Weise dargestellte Diazoverbindung lässt man unter Rühren in eine wässerige Suspension von 33 g 2 # 3-Oxynaphtoesäure-5- Chlor-o-anisidid (NHz : OCHS : Cl = 1 : 2 : 5), bereitet durch Auflösen desselben in Natron lauge und Wiederausfällen mit verdünnter Essigsäure, einlaufen. Der Farbstoff scheidet sich in roten Flocken aus. Darauf wird fil triert, gewaschen und getrocknet.
Process for the preparation of an azo dye. In the Swiss patents No. 99282 and 100372-78 and No. <B> 1 </B> 00386-88 processes for the production of particularly true azo dyes were described, which in the combination of any diazo components with 2 # 3-oxynaphthoic acid-o- toluididen best lien.
It has now been found that a new valuable azo dye is formed if the diazo compound of 4-chio, -3-toluidine with 2 # 3-oxynaphthoic acid-5-chloro-o-anisidide (NHa: OCHa: Cl = 1: 2: 5) couples.
In fact, it was shown in a further development of the above-mentioned invention, which aims to increase the authenticity by introducing methyl groups in the o-position to the imide group of the 2,3-oxynaphthoic arylide, daL;
in an analogous manner, by introducing alkyloxy, ary 1-oxy and aralkylo.xy groups into the same o-position, products of excellent properties, in particular particularly increased stomach fastness, can be obtained. In addition to the good properties of the products of the patents No. 99282 and 100372-78 and No. 100386 to 88, these bodies also have an increased lightfastness compared to the latter.
In addition, it was found that in the overall group of these combinations of diazo compounds with o-alkyloxy or o-aryloxy or o-aralkyloxy @niliden of 2 # 3-oxynaphthous acid, those dyes which are in the azo component or in the Coupling components, but especially those which are halogen-substituted in both, are characterized by particularly good tummy fastness,
which is so excellent, especially in the case of the double-sided halogenated, as it has not been observed in the case of azo dyes.
As in the case of patents No. 99282 and 100372-78 and No. 100386-88, the components can either be combined in aqueous solution, a pigment being obtained, or the representation of this pigment on the fabric or on a other substrate take place, whereby a coloring of the authenticity described above .wird obtained.
Example The diazo compound, prepared in the usual way from 14.1 g of 4-chloro-3-toluidine, is left with stirring in an aqueous suspension of 33 g of 2 # 3-oxynaphthoic acid-5-chloro-o-anisidide (NH: OCHS: Cl = 1: 2: 5), prepared by dissolving it in sodium hydroxide solution and reprecipitating it with dilute acetic acid, run in. The dye separates out in red flakes. It is then filtered, washed and dried.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE100481X | 1922-02-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH100481A true CH100481A (en) | 1923-08-01 |
Family
ID=5648546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH100481D CH100481A (en) | 1922-02-24 | 1923-02-01 | Process for the preparation of an azo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH100481A (en) |
-
1923
- 1923-02-01 CH CH100481D patent/CH100481A/en unknown
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