US3118945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing polyfluoroalkylamines
Assignee: EIDP Inc
•
Filing: 1960-09-02
•
Granted: 1964-01-21
•
Expires: 1980-09-02
Abstract
No abstract record available.
Inventors
- 👤 Werner V Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:49
CPC Classifications
C; C07; C07C; C07C215/00; C07C215/02; C07C215/04; C07C215/06; C07C215/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
THE PROCESS FOR PREPARING A POLYFLUOROALKYLAMINE WHICH COMPRISES REACTING AT A TEMPERATURE OF FROM ABOUT 100*C. TO ABUT 265*C. AN AQUEOUS DISPERSION OF ABOUT 1 MOLE OF A SULFONIC ACID ESTER OF A POLYFLUOROALKANOL WITH FROM ABOUT 2 TO ABOUT 3 MOLES OF A WATER-SOLUBLE BASE OF THE FORMULA HNRR'' WHEREIN EACH OF R AND R'' REPRESENTS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND AN ALKYL RADICAL OF 1 TO 5 CARBON ATOMS, SAID SULFONIC ACID HAVING THE FORMULA A-SO2-OH WHEREIN A REPRESENTS A MEMBER OF THE GROUP CONSISTING OF AN ARYL RADICAL OF 6 TO 20 CARBON ATOMS AND 1 TO 2 BENZENE RINGS, A HALOGEN SUBSTITUTED ARYL RADICAL OF 6 TO 20 CARBON ATOMS AND 1 TO 2 BENZENE RINGS IN WHICH THE HALOGEN SUBSTITUENTS CONSIST OF 1 TO 2 HALOGEN ATOMS OF THE GROUP CONSISTING OF CHLORINE AND BROMINE, AND A SATURATED HYDROCARBON RADICAL OF 1 TO 12 CARBON ATOMS, AND THE POLYFLUOROALKANOL HAS THE FORMULA X(CF2)NCH2OH WHEREIN X REPRESENTS A MEMBER OF THE GROUP CONSISTING OF HYDROGENA ND FLUORINE AND N REPRESENTS AN INTEGER OF FROM 2 TO 12.
Claim 2
Dependent Claim
185 words
THE PROCESS FOR PREPARING A POLYFLUOROALKYLAMINE WHICH COMPRISES REACTING AT A TEMPERATURE OF FROM ABOUT 100*C. TO ABUT 265*C. AN AQUEOUS DISPERSION OF ABOUT 1 MOLE OF A SULFONIC ACID ESTER OF A POLYFLUOROALKANOL WITH FROM ABOUT 2 TO ABOUT 3 MOLES OF A WATER-SOLUBLE BASE OF THE FORMULA HNRR'' WHEREIN EACH OF R AND R'' REPRESENTS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND AN ALKYL RADICAL OF 1 TO 5 CARBON ATOMS, SAID SULFONIC ACID HAVING THE FORMULA A-SO2-OH WHEREIN A REPRESENTS A MEMBER OF THE GROUP CONSISTING OF AN ARYL RADICAL OF 6 TO 20 CARBON ATOMS AND 1 TO 2 BENZENE RINGS, A HALOGEN SUBSTITUTED ARYL RADICAL OF 6 TO 20 CARBON ATOMS AND 1 TO 2 BENZENE RINGS IN WHICH THE HALOGEN SUBSTITUENTS CONSIST OF 1 TO 2 HALOGEN ATOMS OF THE GROUP CONSISTING OF CHLORINE AND BROMINE, AND A SATURATED HYDROCARBON RADICAL OF 1 TO 12 CARBON ATOMS, AND THE POLYFLUOROALKANOL HAS THE FORMULA X(CF2)NCH2OH WHEREIN X REPRESENTS A MEMBER OF THE GROUP CONSISTING OF HYDROGENA ND FLUORINE AND N REPRESENTS AN INTEGER OF FROM 2 TO 12.
References Cited (Backward Citations)
US2716134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-20 | 1967-07-22 | 1968-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-20 | 1971-07-22 | 1972-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-20 | 1975-07-22 | 1976-01-21 | $7700.00 | Window Closed / Lapsed |