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Patent US2921098A successfully refreshed from Google Patents.
US2921098A
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Process for the preparation of 1, 1, 1-trifluoro-2-bromo-2-chloroethane
Assignee: Imperial Chemical Industries Ltd
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Filing: 1958-06-30
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Granted: 1960-01-12
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Expires: 1978-06-30
Abstract
No abstract record available.
Inventors
- 👤 Suckling Charles Walter
- 👤 Raventos James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:36
CPC Classifications
C; C07; C07C; C07C19/00; C07C19/08; C07C19/14; A; A01; A01J; A01J5/00; A01J5/04; C07C17/00; C07C17/093; C07C17/10; C07C17/23
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
22 words
PROCESS FOR THE PREPARATION OF 1:1:1-TRIFLUORO-2BROMO-2-CHLOROETHANE WHICH COMPRISES THE INTERACTION AT A TEMPERATURE IN THE RANGE OF 480*-530*C. OF 1:1:1-TRIFLUORO-2-CHLOROETHANE WITH 1:1:1-TRIFLUORO-2CHLOROETHANE
Claim 2
Dependent Claim
22 words
PROCESS FOR THE PREPARATION OF 1:1:1-TRIFLUORO-2BROMO-2-CHLOROETHANE WHICH COMPRISES THE INTERACTION AT A TEMPERATURE IN THE RANGE OF 480*-530*C. OF 1:1:1-TRIFLUORO-2-CHLOROETHANE WITH 1:1:1-TRIFLUORO-2CHLOROETHANE
Claim 3
Dependent Claim
56 words
PROCESS FOR THE PREPARATION OF 1:1:1-TRIFLUORO-2BROMO-2-CHLOROETHANE WHICH COMPRISES HEATING BROMINE AND 1:1:1-TRIFLUORO-2-CHLOROETHANE TOGETHER AT A TEMPERATURE IN THE RANGE 480*-530* C., WITH MOLAR PROPORTIONS OF TRIFLUOROCHLOROETHANE TO BROMINE IN THE RANGE OF 2:1 TO 5:1, THE HEATED REACTION ZONE EXTENDIN BEYOND THE POINT WHERE VIRTUALLY ALL OF THE BROMINE IN THE GAS STREAM HAS BEEN CONSUMED.
Claim 4
Dependent Claim
56 words
PROCESS FOR THE PREPARATION OF 1:1:1-TRIFLUORO-2BROMO-2-CHLOROETHANE WHICH COMPRISES HEATING BROMINE AND 1:1:1-TRIFLUORO-2-CHLOROETHANE TOGETHER AT A TEMPERATURE IN THE RANGE 480*-530* C., WITH MOLAR PROPORTIONS OF TRIFLUOROCHLOROETHANE TO BROMINE IN THE RANGE OF 2:1 TO 5:1, THE HEATED REACTION ZONE EXTENDIN BEYOND THE POINT WHERE VIRTUALLY ALL OF THE BROMINE IN THE GAS STREAM HAS BEEN CONSUMED.
References Cited (Backward Citations)
US2644845A
Cited
US2849502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |