CH233355A - Process for the preparation of an o, o'-dioxyazo dye. - Google Patents
Process for the preparation of an o, o'-dioxyazo dye.Info
- Publication number
- CH233355A CH233355A CH233355DA CH233355A CH 233355 A CH233355 A CH 233355A CH 233355D A CH233355D A CH 233355DA CH 233355 A CH233355 A CH 233355A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- blue
- dioxyazo
- preparation
- parts
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000003086 colorant Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 210000002268 wool Anatomy 0.000 claims description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 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
- 239000000203 mixture Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B45/00—Complex metal compounds of azo dyes
- C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
- C09B45/14—Monoazo compounds
- C09B45/16—Monoazo compounds containing chromium
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B31/00—Workpiece holders or hold-downs in machines for sewing leather
- D05B31/02—Welt guides
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyridine Compounds (AREA)
Description
Verfahren zur Darstellung eines o,o'-Dioxyazofarbstoffes. Gegenstand vorliegenden Zusatzpatentes ist ein Verfahren zur Darstellung eines o,o'- Dioxyazofarbstoffes, dadurch gekennzeich net, dass man diazotiertes 6-Nitro-4-diiso- butyl-2-aminophenol mit 2-Naphtol-4-sulfon- sä.ure, vorzugsweise in Gegenwart von Pyri- din, kuppelt.
Der neue Farbstoff bildet ein blaugraues Pulver, dessen Lösungsfarbe in Wasser blau, in Schwefelsäure rot mit blauer Fluoreszenz ist und der Wolle in sehr echten rotstichig blauen Tönen färbt.
<I>Beispiel:</I> 26,6 Teile 6-Nitro-4-diisobutyl-2-amino- phenol werden in 400 Teilen Alkohol gelöst, 30 Teile conc. Salzsäure zugegeben und bei 0 mit einer Lösung von 6,9 Teilen Natrium nitrit in 10 Teilen Wasser diazotiert. Die Di- azolösung fliesst zu einer ammoniakalischen Lösung von 22,4 Teilen 2-Naphtol-4-sulfon- säure in 200 Teilen Wasser, der 10 Teile Pyridin zugesetzt werden.
Nach beendeter Kupplung wird der Alkohol abgedampft, der Farbstoff mit Kochsalz ausgesalzen, abfil- triert und getrocknet.
Der neue Farbstoff färbt nachchromiert ein rotstichiges Blau. Gewisse Eigenschaften sind gegenüber dem Farbstoff aus dem 4- Methylderivat verbessert, besonders aber und in hohem Masse das Ziehen nach dem Einbad- chromierverfahren.
Process for the preparation of an o, o'-dioxyazo dye. The present additional patent relates to a process for the preparation of an o, o'-dioxyazo dye, characterized in that diazotized 6-nitro-4-diisobutyl-2-aminophenol with 2-naphthol-4-sulfonic acid, preferably in the presence of pyridine, couples.
The new dye forms a blue-gray powder, the solution color of which is blue in water, red with blue fluorescence in sulfuric acid and colors the wool in very real reddish blue tones.
<I> Example: </I> 26.6 parts of 6-nitro-4-diisobutyl-2-aminophenol are dissolved in 400 parts of alcohol, 30 parts of conc. Hydrochloric acid was added and the mixture was diazotized at 0 with a solution of 6.9 parts of sodium nitrite in 10 parts of water. The diazo solution flows into an ammoniacal solution of 22.4 parts of 2-naphthol-4-sulfonic acid in 200 parts of water, to which 10 parts of pyridine are added.
After the coupling has ended, the alcohol is evaporated off, the dye is salted out with sodium chloride, filtered off and dried.
When chromed, the new dye turns a reddish blue. Certain properties are improved compared to the dye from the 4-methyl derivative, but especially and to a large extent the drawing according to the single-bath chroming process.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH233355T | 1942-07-25 | ||
| CH231067T | 1942-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH233355A true CH233355A (en) | 1944-07-15 |
Family
ID=25727544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH233355D CH233355A (en) | 1942-07-25 | 1942-07-25 | Process for the preparation of an o, o'-dioxyazo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH233355A (en) |
-
1942
- 1942-07-25 CH CH233355D patent/CH233355A/en unknown
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