CH141027A - Process for the preparation of a dye. - Google Patents
Process for the preparation of a dye.Info
- Publication number
- CH141027A CH141027A CH141027DA CH141027A CH 141027 A CH141027 A CH 141027A CH 141027D A CH141027D A CH 141027DA CH 141027 A CH141027 A CH 141027A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- preparation
- oxyazo
- diazotized
- aminophenol
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 3
- 238000002360 preparation method Methods 0.000 title description 2
- IWDCLRJOBJJRNH-UHFFFAOYSA-N p-cresol Chemical compound CC1=CC=C(O)C=C1 IWDCLRJOBJJRNH-UHFFFAOYSA-N 0.000 claims description 6
- DQIVFTJHYKDOMZ-UHFFFAOYSA-N 96-67-3 Chemical compound NC1=CC([N+]([O-])=O)=CC(S(O)(=O)=O)=C1O DQIVFTJHYKDOMZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 230000009918 complex formation Effects 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 150000001845 chromium compounds Chemical class 0.000 claims description 2
- 239000010985 leather Substances 0.000 claims description 2
- 210000002268 wool Anatomy 0.000 claims description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- UJRBOEBOIXOEQK-UHFFFAOYSA-N oxo(oxochromiooxy)chromium hydrate Chemical compound O.O=[Cr]O[Cr]=O UJRBOEBOIXOEQK-UHFFFAOYSA-N 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Landscapes
- Coloring (AREA)
Description
Verfahren zur Herstellung eines Farbstoffes. Es wurde gefunden, dass man einen sehr echten Farbstoff mit wertvollen Eigenschaften erhalten kann, wenn man den o-Oxyazofarb- stoff aus diazotierter 4-Nitro-2-amino-phenol- 6-sulfosäure und p-Kresol mit einer zur Kom plexbildung befähigten dreiwertiges Chrom enthaltenden Chromverbindung behandelt. Die Komplexbildung kann beispielsweise durch Kochen unter Rückfuss oder durch Erhitzen oder Druck erfolgen.
Der neue Farbstoff gibt, auf Wolle oder Leder ausgefärbt, ein schönes, echtes Braun von ausgezeichneter Lichtechtheit, das ganz hervorragend egalisiert und auch für die Erzeugung von Modetönen geeignet iat.
<I>Beispiel:</I> 35 Teile des o-Oxyazofarbstoffes aus dia- zotierter 4-Nitro- 2 -aminophenol- 6 -sulfosäure und p-Kresol werden in wässeriger Lösung mit 33 Teilen einer 26/o Cr?Os enthalten den Chromoxydhydratpaste und 17 Teilen 85 % iger Ameisensäure im Autoklaven zwei Stunden auf<B>115'</B> erhitzt.
Der Farbstoff wird nach dem Abkühlen wie üblich ausgesalzen, abgesaugt und getrocknet.
Process for the preparation of a dye. It has been found that a very genuine dye with valuable properties can be obtained if the o-oxyazo dye is obtained from diazotized 4-nitro-2-aminophenol-6-sulfonic acid and p-cresol with a trivalent which is capable of complex formation Chromium-containing chromium compound treated. The complex formation can take place, for example, by refluxing or by heating or pressure.
The new dye gives, when dyed on wool or leather, a beautiful, genuine brown with excellent lightfastness, which is excellent for leveling out and is also suitable for creating fashionable shades.
<I> Example: </I> 35 parts of the o-oxyazo dye from diazotized 4-nitro-2-aminophenol-6-sulfonic acid and p-cresol are contained in an aqueous solution with 33 parts of a 26 / o Cr? Os Chromium oxide hydrate paste and 17 parts of 85% formic acid heated to <B> 115 '</B> for two hours in an autoclave.
After cooling, the dye is salted out as usual, filtered off with suction and dried.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE141027X | 1928-03-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH141027A true CH141027A (en) | 1930-07-15 |
Family
ID=5668479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH141027D CH141027A (en) | 1928-03-10 | 1929-01-22 | Process for the preparation of a dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH141027A (en) |
-
1929
- 1929-01-22 CH CH141027D patent/CH141027A/en unknown
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