US2622073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing alkanolamines
Assignee: Carbochimique SA Ste
•
Filing: 1947-06-26
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Granted: 1952-12-16
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Expires: 1967-06-26
Abstract
No abstract record available.
Inventors
- 👤 Ferrero Paul
- 👤 Berbe Francois
- 👤 Rene-Leon Flamme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:45
CPC Classifications
C; C07; C07C; C07C215/00; C07C215/02; C07C215/04; C07C215/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN THE PRODUCTION OF ALKANOLAMINES BY THE REACTION OF A LOW MOLECULAR ALKYLENE OXIDE AND AQUEOUS AMMONIA IN ANY SPECIFIC MOLAR RATIO AND UNDER ANY SPECIFIC REACTION CONDITION, WHEREIN THE PROPORTIONS OF MONO-, DI-, AND TRI-ALKANOLAMINES PRODUCED ARE DEPENDENT UPON THE MOLAR RATIOS OF TH REACTANTS AND THE REACTION CONDITIONS USED, THE IMPROVEMENT WHICH COMPRISES REACTING THE LOW MOLECULAR ALKYLENE OXIDE AND THE AQUEOUS AMMONIA IN THE PRESENCE OF AN ADDITION OF A QUANTITY OF THE DI-ALKANOLAMINE PRODUCED BY SAID REACTION IN EXCESS OF THE MOLAR AMOUNT WHICH WOULD BE PRODUCED BY REACTION BE TWEEN SAID REACTANTS UNDER SAID SPECIFIC MOLAR RATIO AND REACTION CONDITIONS WHEN NO SUCH ADDITION IS MADE.
Claim 2
Dependent Claim
111 words
IN THE PRODUCTION OF ALKANOLAMINES BY THE REACTION OF A LOW MOLECULAR ALKYLENE OXIDE AND AQUEOUS AMMONIA IN ANY SPECIFIC MOLAR RATIO AND UNDER ANY SPECIFIC REACTION CONDITION, WHEREIN THE PROPORTIONS OF MONO-, DI-, AND TRI-ALKANOLAMINES PRODUCED ARE DEPENDENT UPON THE MOLAR RATIOS OF TH REACTANTS AND THE REACTION CONDITIONS USED, THE IMPROVEMENT WHICH COMPRISES REACTING THE LOW MOLECULAR ALKYLENE OXIDE AND THE AQUEOUS AMMONIA IN THE PRESENCE OF AN ADDITION OF A QUANTITY OF THE DI-ALKANOLAMINE PRODUCED BY SAID REACTION IN EXCESS OF THE MOLAR AMOUNT WHICH WOULD BE PRODUCED BY REACTION BE TWEEN SAID REACTANTS UNDER SAID SPECIFIC MOLAR RATIO AND REACTION CONDITIONS WHEN NO SUCH ADDITION IS MADE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |