US3019261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nu-fluorinatedalkyl-amides of alkanoic acids and process of preparation
Assignee: EIDP Inc
•
Filing: 1959-03-12
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Granted: 1962-01-30
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Expires: 1979-03-12
Abstract
No abstract record available.
Inventors
- 👤 Pascal Ivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:04
CPC Classifications
C; C07; C07C; C07C231/00; C07C231/02; C07C231/12; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
50 words
THE PROCESS FOR PREPARING (N-METHYL-1H,1H,WHPOLYFLUOROALKYLAMIDES WHICH COMPRISES REACTING TETRAFLUOROETHYLENE WITH FROM 0.1 TO ABOUT 20 PARTS BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF N,N-DIMETHYLFORMAMIDE AND N,N-DIMETHYLACETAMIDE AT A TEMPERATURE OF FROM ABOUT 75* C. TO ABOUT 200* C. IN THE PRESENCE OF A FREE RADICAL GENERATING AGENT.
Claim 2
Dependent Claim
50 words
THE PROCESS FOR PREPARING (N-METHYL-1H,1H,WHPOLYFLUOROALKYLAMIDES WHICH COMPRISES REACTING TETRAFLUOROETHYLENE WITH FROM 0.1 TO ABOUT 20 PARTS BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF N,N-DIMETHYLFORMAMIDE AND N,N-DIMETHYLACETAMIDE AT A TEMPERATURE OF FROM ABOUT 75* C. TO ABOUT 200* C. IN THE PRESENCE OF A FREE RADICAL GENERATING AGENT.
Claim 3
Dependent Claim
68 words
THE PROCESS FOR PREPARING N-METHYL-1H,1H,WHPOLYFLUOROALKYLAMINES WHICH COMPRISES REACTING TETRAFLUOROETHYLENE WITH FROM 0.1 TO ABOUT 20 PARTS BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF N,N-DIMETHYLFORMAMIDE AND N,N-DIMETHYLACETAMIDE AT A TEMPERATURE OF FROM ABOUT 75* C. TO ABOUT 200* C. IN THE PRESENCE OF A FREE RADICAL GENERATING AGENT, AND HYDROLYZING THE RESULTING AMIDE BY HEATING IT WITH AN AQUEOUS SOLUTION OF A STRONG ACID UNDER REFLUX.
Claim 4
Dependent Claim
68 words
THE PROCESS FOR PREPARING N-METHYL-1H,1H,WHPOLYFLUOROALKYLAMINES WHICH COMPRISES REACTING TETRAFLUOROETHYLENE WITH FROM 0.1 TO ABOUT 20 PARTS BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF N,N-DIMETHYLFORMAMIDE AND N,N-DIMETHYLACETAMIDE AT A TEMPERATURE OF FROM ABOUT 75* C. TO ABOUT 200* C. IN THE PRESENCE OF A FREE RADICAL GENERATING AGENT, AND HYDROLYZING THE RESULTING AMIDE BY HEATING IT WITH AN AQUEOUS SOLUTION OF A STRONG ACID UNDER REFLUX.
Claim 5
Dependent Claim
5 words
AN N-METHYLPOLYFLUOROALKYLFORMAMIDE OF THE FORMULA
Claim 6
Dependent Claim
5 words
AN N-METHYLPOLYFLUOROALKYLFORMAMIDE OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-29 | 1965-07-31 | 1966-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-29 | 1969-07-31 | 1970-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-29 | 1973-07-31 | 1974-01-30 | $7700.00 | Window Closed / Lapsed |