US3706816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of 1,1,1-trichloroethane
Assignee: Imperial Chemical Industries Ltd
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Filing: 1969-09-22
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Granted: 1972-12-19
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Expires: 1989-09-22
Abstract
Abstract AN INTEGRATED PROCESS FOR THE MANUFACTURE OF 1,1,1TRICHLOROETHANE BASED ON ETHYLENE AND CHLORINE. CHLORINE IS REACTED WITH ETHYL CHLORIDE AND 181-DICHLOROETHANE IN AN UNPACKED REACTION ZONE. A LIGHT FRACTION FROM THE CHLORINATION ZONE COMPRISING ETHYLENE AND CHLOROETHYLENES TOGETHER WITH ETHYLENE FEEDSTOCK ARE REACTED WITH HCI AND THE RESULTING ETHYL CHLORIDE AND 181-DICHLOROETHANE ARE FED TO THE CHORINATION ZONE.
Inventors
- 👤 Alastair Campbell
- 👤 Rosemary A Carruthers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:17
CPC Classifications
C; C07; C07C; C07C19/00; C07C19/01; C07C19/043; C07C19/05; C07C17/00; C07C17/07; C07C17/08; C07C17/093; C07C17/10
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |