CH123737A - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- CH123737A CH123737A CH123737DA CH123737A CH 123737 A CH123737 A CH 123737A CH 123737D A CH123737D A CH 123737DA CH 123737 A CH123737 A CH 123737A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- azo dye
- azo
- dye
- metaxylene
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 6
- 239000000987 azo dye Substances 0.000 title claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 239000000975 dye Substances 0.000 claims description 3
- GLCWUJGSUGZXEJ-UHFFFAOYSA-N 2-hydroxybenzoic acid;sulfurochloridic acid Chemical compound OS(Cl)(=O)=O.OC(=O)C1=CC=CC=C1O GLCWUJGSUGZXEJ-UHFFFAOYSA-N 0.000 claims description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical class [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Coloring (AREA)
Description
Verfahren zur Darstellung eines Azofarbstoffes. Durch (las Patent Nr. 121711 ist ein Ver fahren zur Darstellung eines Azofarbstoffes geschützt, welches dadurch gekennzeichnet ist, dass man asymmetrisches Metaxylidin diazotiert und die Diazoverbindung mit 1- (4'-Oxy -3'-carboxyphenylsulfoäthy lamino)-8- naphtol-3,6-disulfosäure kuppelt.
Es wurde nun gefunden, dass man zu demselben Farbstoff gelangt, wenn man Metaxylol-azo-l-äthylamino-8-naphtol-3. 6-di- sulfos5,ure mit Salizylsäuresulfochloricl be handelt.
Beispiel 523 Gewichtsteile des Dinatriumsalzes der Metaxylol-azo-l-äthylamino-8-naphtol-3 . 6-di- sulfosäure werden in 1000 Gewichtsteilen Wasser neutral gelöst und mit 106 Ge wichtsteilen Soda versetzt; darauf gibt man bei 80 so lange Salizylsäuresulfochlorid in kleinen Portionen zu, bis die Farbe der Lö sung nicht mehr röter wird. Der durch Aus salzen abgeschiedene Farbstoff ist identisch mit dem nach dem Verfahren des Patentes Nr.<B>121711</B> erhaltenen Produkt.
Process for the preparation of an azo dye. A process for the preparation of an azo dye is protected by (read patent no. 3,6-disulfonic acid couples.
It has now been found that the same dye is obtained if one uses metaxylene-azo-1-ethylamino-8-naphtol-3. 6-disulfos5, ure treated with salicylic acid sulfochloricl.
Example 523 parts by weight of the disodium salt of metaxylene-azo-1-ethylamino-8-naphthol-3. 6-disulfonic acid is dissolved in 1000 parts by weight of water and treated with 106 parts by weight of soda; then add salicylic acid sulfochloride in small portions at 80 until the color of the solution is no longer redder. The dye deposited from salts is identical to the product obtained by the process of patent no. 121711.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE123737X | 1925-05-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH123737A true CH123737A (en) | 1927-12-16 |
Family
ID=5657920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH123737D CH123737A (en) | 1925-05-12 | 1926-05-10 | Process for the preparation of an azo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH123737A (en) |
-
1926
- 1926-05-10 CH CH123737D patent/CH123737A/en unknown
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