CH188210A - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- CH188210A CH188210A CH188210DA CH188210A CH 188210 A CH188210 A CH 188210A CH 188210D A CH188210D A CH 188210DA CH 188210 A CH188210 A CH 188210A
- Authority
- CH
- Switzerland
- Prior art keywords
- azo dye
- amino
- preparation
- condensation
- dye
- Prior art date
Links
- 239000000987 azo dye Substances 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 9
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 239000003960 organic solvent Substances 0.000 claims description 4
- OAHMVZYHIJQTQC-UHFFFAOYSA-N 4-cyclohexylphenol Chemical compound C1=CC(O)=CC=C1C1CCCCC1 OAHMVZYHIJQTQC-UHFFFAOYSA-N 0.000 claims description 3
- -1 aminoazo compound Chemical class 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 239000007859 condensation product Substances 0.000 claims description 3
- 239000000975 dye Substances 0.000 claims description 3
- 238000006396 nitration reaction Methods 0.000 claims description 3
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 3
- WXWCDTXEKCVRRO-UHFFFAOYSA-N para-Cresidine Chemical compound COC1=CC=C(C)C=C1N WXWCDTXEKCVRRO-UHFFFAOYSA-N 0.000 claims description 3
- XAGPXEVNCJHXCL-UHFFFAOYSA-N 2-butan-2-ylaniline Chemical compound CCC(C)C1=CC=CC=C1N XAGPXEVNCJHXCL-UHFFFAOYSA-N 0.000 claims description 2
- 150000008049 diazo compounds Chemical class 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- MVRPPTGLVPEMPI-UHFFFAOYSA-N 2-cyclohexylphenol Chemical compound OC1=CC=CC=C1C1CCCCC1 MVRPPTGLVPEMPI-UHFFFAOYSA-N 0.000 description 2
- AGNFWIZBEATIAK-UHFFFAOYSA-N 4-phenylbutylamine Chemical compound NCCCCC1=CC=CC=C1 AGNFWIZBEATIAK-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- VFWCMGCRMGJXDK-UHFFFAOYSA-N 1-chlorobutane Chemical compound CCCCCl VFWCMGCRMGJXDK-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000001816 cooling 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
- 238000006193 diazotization reaction Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Substances [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005406 washing Methods 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)
Description
Verfahren zur Herstellung eines Azofarbstoffes. Gemäss dem im Hauptpatent beschrie benen Verfahren erhält man einen in organi- sehen Lösungsmitteln gut löslichen Azofarb- stoff, wenn man als Diazokomponente ein Aminobutylbenzolgemisch vom Kp.14 115 bis 144' verwendet, welche o-, p- und m- Amino-sec.-butylbenzol enthält.
Wie nun weiter gefunden wurde, erhält man auch einen in organischen Lösungsmit teln gut löslichen Azofarbstoff, wenn man ein Amino-sec.-butylbenzolgemisch, wie es durch Kondensation von prim.-Butylchlorid mit Benzol bei<B>60'</B> C in Gegenwart von Alu miniumchlorid, Nitrierung des Kondensa tionsproduktes und Reduktion der Nitro- gruppe erhältlich ist, diazotiert, mit 3-Amino- 4-methoxy-l-methylbenzol kuppelt,
die er haltene Aminoazoverbindung weiter diazo- tiert und mit p-Cyclohexylphenol vereinigt. <I>Beispiel:</I> 14,9 Teile eines Aminobutylbenzolgemi- sches vom Kp. 14 115 bis 144', wie es durch Kondensation von prim.-Butylchlorid mit Benzol bei<B>60'</B> C in Gegenwart von Alumi niumchlorid, Nitrierung des Kondensations produktes und Reduktion der Nitrogruppe erhältlich ist, werden diazotiert und mit 3- Amino-4-methoxy-l-methylbenzol gekuppelt.
Der mit Salzsäure und Natronlauge gerei nigte Aminoazofarbstoff wird mit 150 Tei len heissem Wasser angerührt und mit 54 Teilen Salzsäure von 12' Be längere Zeit ver rührt. Nach Abkühlung auf 15 lässt man 50 Teile 2-n-Natriumnitritlösung zulaufen und kühlt weiter bis auf etwa 8 ab unter weiterem Rühren, bis die Diazotierung fertig ist.
Die Diazoverbindung lässt man in eine alkalische Lösung der entsprechenden Menge p-Cyclohexylphenol (etwa 16 Teile) einlau fen; vorteilhafterweise setzt man der Lösung des Cyclohexylphenols ein. Emulgiermittel zu. Während dieser Kupplung soll das Re aktionsmedium immer alkalisch sein. Durch Auswaschen mit schwachem Alkali wird etwa im Überschuss vorhandenes Cyclohexyl- phenol ausgewaschen. Der Farbstoff löst sich in organischen Lösungsmitteln mit gelb brauner Farbe. '
Process for the preparation of an azo dye. According to the process described in the main patent, an azo dye which is readily soluble in organic solvents is obtained if an aminobutylbenzene mixture of boiling point 14 115 to 144 'is used as the diazo component, which o-, p- and m-amino-sec. -butylbenzene contains.
As has now also been found, an azo dye which is readily soluble in organic solvents is also obtained if an amino-sec-butylbenzene mixture, as is achieved by condensation of primary-butyl chloride with benzene at 60.degree. C., is obtained in the presence of aluminum chloride, nitration of the condensation product and reduction of the nitro group is obtainable, diazotized, coupled with 3-amino-4-methoxy-1-methylbenzene,
the aminoazo compound obtained is further diazo- tated and combined with p-cyclohexylphenol. <I> Example: </I> 14.9 parts of an aminobutylbenzene mixture with a boiling point of 14 115 to 144 ', as is the case by condensation of primary butyl chloride with benzene at <B> 60' </B> C in the presence of aluminum chloride, nitration of the condensation product and reduction of the nitro group is available, are diazotized and coupled with 3-amino-4-methoxy-1-methylbenzene.
The aminoazo dye purified with hydrochloric acid and sodium hydroxide solution is mixed with 150 parts of hot water and stirred for a long time with 54 parts of hydrochloric acid of 12%. After cooling to 15, 50 parts of 2-n-sodium nitrite solution are run in and the mixture is cooled further down to about 8 with further stirring until the diazotization is complete.
The diazo compound is allowed to run into an alkaline solution of the appropriate amount of p-cyclohexylphenol (about 16 parts); the solution of cyclohexylphenol is advantageously used. Emulsifier too. During this coupling, the reaction medium should always be alkaline. Any excess cyclohexylphenol is washed out by washing with a weak alkali. The dye dissolves in organic solvents with a yellow-brown color. '
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE188210X | 1934-05-26 | ||
| CH184011T | 1935-04-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH188210A true CH188210A (en) | 1936-12-15 |
Family
ID=25720951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH188210D CH188210A (en) | 1934-05-26 | 1935-04-16 | Process for the preparation of an azo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH188210A (en) |
-
1935
- 1935-04-16 CH CH188210D patent/CH188210A/en unknown
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