US3373201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous process for the production of choline chloride
Assignee: UCB SA
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Filing: 1965-10-23
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Granted: 1968-03-12
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Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Cyrille Van Eygen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:41
CPC Classifications
C; C07; C07C; C07C213/00; C07C213/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A CONTINUOUS PROCESS FOR THE PRODUCTION OF AN AQUEOUS SOLUTION OF CHOLINE CHLORIDE WHICH COMPRISES CONTINUOUSLY INTRODUCING A STREAM OF AN AQUEOUS SOLUTION OF TRIMETHYLAMINE HYDROCHLORIDE AND A STREAM OF LIQUID ETHYLENE OXIDE IN EXCESS REFERRED TO THE STOICHIOMETRIC QUANTITY, INTO A FIRST REACTION ZONE SUBJECTED TO AGITATION, WHICH IS SUBSTANTIALLY FREE FROM GASEOUS PHASE AND WHICH IS AT A TEMPERATURE OF FROM AT LEAST 60*C. TO AT MOST 120*C. AND AT A PRESSURE OF 5 TO 20 ATMOSPHERES, PASSING THE RESULTING REACTION MIXTURE THROUGH A SECOND REACTION ZONE WHICH IS SUBSTANTIALLY FREE FROM AGITATION, WHICH IS SUBSTANTIALLY FREE FROM GASEOUS PHASE AND WHICH IS AT A TEMPERATURE OF FROM AT LEAST 60*C. TO AT MOST 120*C. AND AT PRESSURE OF 5 TO 20 ATMOSPHERES AND FINALLY PASSING THE REACTION MIXTURE WITHDRAWN FROM SAID SECOND ZONE THROUGH A CONCENTRATION ZONE WHEREIN EXCESS ETHYLENE OXIDE IS EVAPORATED OFF AND THE REACTION MIXTURE IS CONCENTRATED, THUS OBTAINING AN AQUEOUS SOLUTION OFCHOLINE CHLORIDE READY FOR USE.
Claim 2
Dependent Claim
163 words
A CONTINUOUS PROCESS FOR THE PRODUCTION OF AN AQUEOUS SOLUTION OF CHOLINE CHLORIDE WHICH COMPRISES CONTINUOUSLY INTRODUCING A STREAM OF AN AQUEOUS SOLUTION OF TRIMETHYLAMINE HYDROCHLORIDE AND A STREAM OF LIQUID ETHYLENE OXIDE IN EXCESS REFERRED TO THE STOICHIOMETRIC QUANTITY, INTO A FIRST REACTION ZONE SUBJECTED TO AGITATION, WHICH IS SUBSTANTIALLY FREE FROM GASEOUS PHASE AND WHICH IS AT A TEMPERATURE OF FROM AT LEAST 60*C. TO AT MOST 120*C. AND AT A PRESSURE OF 5 TO 20 ATMOSPHERES, PASSING THE RESULTING REACTION MIXTURE THROUGH A SECOND REACTION ZONE WHICH IS SUBSTANTIALLY FREE FROM AGITATION, WHICH IS SUBSTANTIALLY FREE FROM GASEOUS PHASE AND WHICH IS AT A TEMPERATURE OF FROM AT LEAST 60*C. TO AT MOST 120*C. AND AT PRESSURE OF 5 TO 20 ATMOSPHERES AND FINALLY PASSING THE REACTION MIXTURE WITHDRAWN FROM SAID SECOND ZONE THROUGH A CONCENTRATION ZONE WHEREIN EXCESS ETHYLENE OXIDE IS EVAPORATED OFF AND THE REACTION MIXTURE IS CONCENTRATED, THUS OBTAINING AN AQUEOUS SOLUTION OFCHOLINE CHLORIDE READY FOR USE.
References Cited (Backward Citations)
US2137314A
Cited
US2774759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |