ES420104A1 - Procedure for the sulfonation of aromatic substances. (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for the sulfonation of aromatic substances. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES420104A1 ES420104A1 ES73420104A ES420104A ES420104A1 ES 420104 A1 ES420104 A1 ES 420104A1 ES 73420104 A ES73420104 A ES 73420104A ES 420104 A ES420104 A ES 420104A ES 420104 A1 ES420104 A1 ES 420104A1
- Authority
- ES
- Spain
- Prior art keywords
- aromatic substance
- liquid
- reaction
- reaction chamber
- sulfonation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Process for the sulfonation of aromatic substances, characterized in that said substances having a boiling point not higher than 100ºC at a pressure of 0.1 mm hg, said aromatic compounds being capable of undergoing the direct action of sulfur trioxide to yield a product having a sulfonated aromatic nucleus but otherwise substantially inert under the reaction conditions with respect to sulfur trioxide and mixtures thereof, it is stated that: said aromatic substance, at a temperature above its melting point, and thus in liquid form, it is boiled in a reaction chamber at a temperature not higher than 100º c, under a pressure of from 0.1 mm hg to atmospheric pressure; gaseous sulfur trioxide is introduced into the boiling liquid aromatic substance to react exothermically therewith, making the heat released in the exothermic sulfonation reaction such that the liquid aromatic substance continues to boil, and providing the latent heat of volatilization of said liquid aromatic substance; the aromatic substance volatilized in this way is converted back into liquid in a heat exchanger, so that the latent heat of volatilization is released into the heat exchanger and the heat released in the sulfonation reaction is thus removed from the chamber of reaction; the aromatic substance converted back into liquid in the heat exchanger is recirculated to the reaction chamber, and the pressure in the reaction chamber and the speed with which the gaseous sulfur trioxide is introduced into the liquid aromatic substance are controlled in a controlled manner. Such that the aromatic substance is volatilized, converted back to the liquid state and recirculated to the reaction chamber at such a rate that it is ensured that the amount of liquid aromatic substance present in the reaction chamber and available for participation in the sulfonation reaction it is always in excess relative to the amount of said aromatic substance capable of reacting with the gaseous sulfur trioxide in contact with the aromatic substance in the reaction chamber, and that the temperature of the reaction mixture does not exceed 100º c. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4992872A GB1434019A (en) | 1972-10-30 | 1972-10-30 | Sulphonation of aromatic compounds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES420104A1 true ES420104A1 (en) | 1976-06-16 |
Family
ID=10454038
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES420105A Expired ES420105A1 (en) | 1972-10-30 | 1973-10-30 | Procedure for the sulfonation of aromatic substances. (Machine-translation by Google Translate, not legally binding) |
| ES73420104A Expired ES420104A1 (en) | 1972-10-30 | 1973-10-30 | Procedure for the sulfonation of aromatic substances. (Machine-translation by Google Translate, not legally binding) |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES420105A Expired ES420105A1 (en) | 1972-10-30 | 1973-10-30 | Procedure for the sulfonation of aromatic substances. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
| Country | Link |
|---|---|
| ES (2) | ES420105A1 (en) |
-
1973
- 1973-10-30 ES ES420105A patent/ES420105A1/en not_active Expired
- 1973-10-30 ES ES73420104A patent/ES420104A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES420105A1 (en) | 1976-03-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19890206 |