US3979454A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of alkyl sulphonic acid hydroxy alkyl amides
Assignee: Bayer AG
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Filing: 1975-03-17
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Granted: 1976-09-07
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Expires: 1995-03-17
Abstract
Abstract Improved process for the production of alkyl sulphonic acid hydroxy alkyl amides by reacting alkyl sulphonic acid chlorides and hydroxy alkyl amines in the presence of acid binding agents wherein aqueous alkali hydroxide solution is used as acid-binding agent, the three components are applied in a substantially stoichiometric ratio, and the reaction is carried out by adding the alkyl sulphonic acid chloride to the hydroxy alkyl amine and adding to the mixture thus obtained the aqueous alkali hydroxide solutions at such a rate that the pH-value of the reaction mixture does not exceed pH 10.
Inventors
- 👤 Hermann Perrey
- 👤 Harry Welz
- 👤 Ralf Lange
- 👤 Hans Rudolph
- 👤 Hans Jurgen Rosenkranz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:29
CPC Classifications
C; C07; C07C; C07C311/00; C07C311/01; C07C311/02; C07C311/09
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
121 words
In the known process for the production of alkyl sulphonic acid hydroxy alkyl amides by reacting alkyl sulphonic acid chlorides and hydroxy alkyl amines in the presence of acid binding agents the improvement comprising using an aqueous alkali hydroxide solution as acid-binding agent, applying the three components in such a ratio, that 0.8 to 1.2 moles of alkali hydroxide and 1 to 1.3 moles of hydroxy alkyl amine are used per mole of sulphonic acid chloride, and carrying out the reaction by adding the alkyl sulphonic acid chloride to the hydroxy alkyl amine and adding to the mixture thus obtained the aqueous alkali hydroxide solution at such a rate that the pH-value of the reaction mixture does not exceed pH 10.
Claim 2
Dependent Claim
121 words
In the known process for the production of alkyl sulphonic acid hydroxy alkyl amides by reacting alkyl sulphonic acid chlorides and hydroxy alkyl amines in the presence of acid binding agents the improvement comprising using an aqueous alkali hydroxide solution as acid-binding agent, applying the three components in such a ratio, that 0.8 to 1.2 moles of alkali hydroxide and 1 to 1.3 moles of hydroxy alkyl amine are used per mole of sulphonic acid chloride, and carrying out the reaction by adding the alkyl sulphonic acid chloride to the hydroxy alkyl amine and adding to the mixture thus obtained the aqueous alkali hydroxide solution at such a rate that the pH-value of the reaction mixture does not exceed pH 10.
Claim 3
Dependent Claim
34 words
A process as claimed in claim 1, wherein alkyl sulphonic acid chlorides corresponding to the formula R.sup.1 -- SO.sub.2 -- Cl in which R 1 represents an alkyl chloroalkyl or cycloalkyl radical, are used.
Claim 4
Dependent Claim
61 words
A process as claimed in claim 1, wherein the hydroxy alkyl amines used correspond to the general formula ##STR2## in which R 2 represents a substituted or unsubstituted divalent aliphatic or cycloaliphatic radical, and R 3 represents hydrogen, a substituted or unsubstituted alkyl, cycloalkyl, aralkyl or aryl radical or the radical --R 2 --OH where R 2 is as defined above.
Claim 5
Dependent Claim
40 words
A process as claimed in claim 1, wherein the alkyl sulphonic acid chlorides used correspond to the formula R.sup.4 -- SO.sub.2 -- Cl in which R 4 represents a linear or branched C 8 --C 20 --alkyl and/or chloroalkyl radical.
Claim 6
Dependent Claim
26 words
A process as claimed in claim 1, wherein ethanol amine, isopropanol amine, diethanol amine, diisopropanol amine or mixtures thereof are used as the hydroxy alkyl amine.
Claim 7
Dependent Claim
23 words
A process as claimed in claim 1, wherein the reaction is carried out at temperatures in the range of from -10° to 50°C.
Claim 8
Dependent Claim
22 words
A process as claimed in claim 1, wherein the reaction is carried out at temperatures in the range from 0° to 30°C.
Claim 9
Dependent Claim
22 words
A process as claimed in claim 1, wherein from 0.9 to 1.1 mols of alkali hydroxide are used per mol of sulphochloride.
Claim 10
Dependent Claim
22 words
A process as claimed in claim 1, wherein 1 to 1.2 mols of hydroxy alkyl amine are used per mol of sulphochloride.
Claim 11
Dependent Claim
22 words
A process according to claim 7 wherein the reaction is carried out at a temperature in the range from 10° to 20°C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |