US2884452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinylsulfonyl fluorides and preparation thereof
Assignee: Hoechst AG
•
Filing: 1956-10-08
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Granted: 1959-04-28
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Expires: 1976-10-08
Abstract
No abstract record available.
Inventors
- 👤 Scherer Otto
- 👤 Schacher Paul Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:56
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/02; C07C303/22; C07C309/00; C07C309/78; C07C309/79; C07C309/81
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
59 words
A DEHYDROHALOGENATION PROCESS WHICH COMPRISES REACTING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2-HALOETHANESULFONYL FLUORIDE AND 2,2-HALOETHANESULFONYL FLUORIDE IN WHICH THE HALOGEN IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE AT A TEMPERATURE NOT HIGHER THAN 40*C. IN A AQUEOUS MEDIUM CONTAINING AN ALKALINE SUBSTANCE CAPABLE OF COMBINING WITH HYDROGEN HALIDE, TO PRODUCE A VINYLSULFONYL FLUORIDE.
Claim 2
Dependent Claim
59 words
A DEHYDROHALOGENATION PROCESS WHICH COMPRISES REACTING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2-HALOETHANESULFONYL FLUORIDE AND 2,2-HALOETHANESULFONYL FLUORIDE IN WHICH THE HALOGEN IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE AT A TEMPERATURE NOT HIGHER THAN 40*C. IN A AQUEOUS MEDIUM CONTAINING AN ALKALINE SUBSTANCE CAPABLE OF COMBINING WITH HYDROGEN HALIDE, TO PRODUCE A VINYLSULFONYL FLUORIDE.
Claim 3
Dependent Claim
6 words
AS A NEW COMPOUND, 2-CHLOROVINYLSULFONYL FLUORIDE.
Claim 4
Dependent Claim
6 words
AS A NEW COMPOUND, 2-CHLOROVINYLSULFONYL FLUORIDE.
References Cited (Backward Citations)
US2653973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |