Fluorocarbon amides
Abstract
Abstract (RF-CO-NH-(CH2)Q)2-N-CO-R-COOH WHEREIN R IS AN ALKYLENE GROUP OF 1 TO 12 CARBON ATOMS, AN ALKYLENE GROUP OF 2 TO 12 CARBON ATOMS, OR A PHENYLENE GROUP, Q IS AN INTEGER FROM 1 TO 6, AND RF IS A RADICAL HAVING THE FORMULA Y(CF2)5(CH2)T- WHEREIN S IS AN INTEGER FROM 1 TO 16, T IS AN INTEGER NOT GREATER THAN S FROM 0 TO 8, WITH THE SUM OF S PLUS T BEING FROM 1 TO 20, AND Y IS SELECTED FROM THE GROUP CONSISTING OF F3C- AND RADICALS HAVING THE FORMULA R1-CF(-R2)-CF(-O(-))-CF(-R1)-R2 NOVEL FLUOROCARBON AMIDES USEFUL AS OIL- AND WATERREPELLENT AGENTS HAVE THE FORMULA WHEREIN R1 AND R2 ARE FLUORINE OR PERFLUOROALKYL GROUPS HAVING FROM 1 TO 9 CARBON ATOMS, WITH NOT MORE THAN THREE OF THE R1 AND R2 GROUPS BEING PERFLUOROALKYL GROUPS.
Inventors
- 👤 W Beyleveld
- 👤 B Oxenrider
- 👤 C Woolf
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |