CH186741A - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- CH186741A CH186741A CH186741DA CH186741A CH 186741 A CH186741 A CH 186741A CH 186741D A CH186741D A CH 186741DA CH 186741 A CH186741 A CH 186741A
- Authority
- CH
- Switzerland
- Prior art keywords
- amino
- azo dye
- preparation
- dye
- oxynaphthalene
- Prior art date
Links
- 239000000987 azo dye Substances 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 4
- 239000000975 dye Substances 0.000 claims description 6
- 230000002378 acidificating effect Effects 0.000 claims description 4
- 210000002268 wool Anatomy 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 150000003457 sulfones Chemical class 0.000 claims 1
- 125000000217 alkyl group Chemical group 0.000 description 3
- -1 aralkoxy Chemical group 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 125000003710 aryl alkyl group Chemical group 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- GWIAAIUASRVOIA-UHFFFAOYSA-N 2-aminonaphthalene-1-sulfonic acid Chemical class C1=CC=CC2=C(S(O)(=O)=O)C(N)=CC=C21 GWIAAIUASRVOIA-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 125000004104 aryloxy group Chemical group 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000008049 diazo compounds Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Azofarbstoffes. Es wurde gefunden, dass man wertvolle Azofarbstoffe erhält, wenn man die Diazo- verbindungen von Aminen der allgemeinen Formel
EMI0001.0006
worin X einen Substituenten, insbesondere einen nichtsauren Substituenten, wie Alkyl, Aryl, Aralkyl, Alkoxy,
Aralkoxy oder Aryl- <B> </B> oxy bedeutet und R für Alkyl, Aryl, Aralkyl, Alkoxy, Aralkoxy, Aryloxy oder die Amino- gruppe steht, deren Wasserstoffatome ganz oder teilweise durch gleiche oder verschie dene Alkyl-, Aryl- oder Aralkylreste sub stituiert sein können,
mit 2-Aminonaphthalin- sulfonsäuren oder ihren Substitutionsproduk- ten in saurem Medium vereinigt.
Die so erhältlichen Farbstoffe haben ein gutes Egaligierungsvermögen und färben Wolle im allgemeinen in blauen Tönen von guter Walkechtheit. Die Färbungen können sich ausserdem durch eine gute Abendfarbe aus zeichnen.
Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines Azofarb- stoffes. Es ist dadurch gekennzeichnet, dass man das diazotierte 5-Nitro-2-amino-3-meth- oxyphenyl-benzylsulfon mit 2-.Amino-8-oxy- naphthalin-6-sulfonsäure in saurem Medium kuppelt.
<I>Beispiel:</I> <B>322</B> Gewichtsteile 5-Nitro-2-amino-3-meth- oxyphenylbenzylsulfon werden diazotiert und mit<B>69</B> Gewichtsteilen 2-Amino-8-oxynaph- thalin-6-sulfonsäure gekuppelt. Der isolierte Farbstoff färbt Wolle aus saurem Bade in klarem, grünstichig blauem Tone von sehr guter Abendfarbe.
Process for the preparation of an azo dye. It has been found that valuable azo dyes are obtained if the diazo compounds of amines of the general formula are used
EMI0001.0006
wherein X is a substituent, in particular a non-acidic substituent such as alkyl, aryl, aralkyl, alkoxy,
Aralkoxy or aryl- <B> </B> oxy and R stands for alkyl, aryl, aralkyl, alkoxy, aralkoxy, aryloxy or the amino group, the hydrogen atoms of which are completely or partially replaced by identical or different alkyl, aryl or Aralkyl radicals can be substituted,
combined with 2-aminonaphthalene sulfonic acids or their substitution products in an acidic medium.
The dyes obtainable in this way have good leveling power and generally dye wool in blue shades of good millfastness. The colors can also be characterized by a good evening color.
The subject of the present patent is a process for the production of an azo dye. It is characterized in that the diazotized 5-nitro-2-amino-3-methoxyphenylbenzylsulfone is coupled with 2-amino-8-oxynaphthalene-6-sulfonic acid in an acidic medium.
<I> Example: </I> <B> 322 </B> parts by weight of 5-nitro-2-amino-3-methoxyphenylbenzylsulfone are diazotized and <B> 69 </B> parts by weight of 2-amino-8- oxynaphthalene-6-sulfonic acid coupled. The isolated dye dyes wool from an acid bath in a clear, greenish blue shade of a very good evening color.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE186741X | 1934-02-24 | ||
| CH182049T | 1935-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH186741A true CH186741A (en) | 1936-09-30 |
Family
ID=25720654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH186741D CH186741A (en) | 1934-02-24 | 1935-01-31 | Process for the preparation of an azo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH186741A (en) |
-
1935
- 1935-01-31 CH CH186741D patent/CH186741A/en unknown
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