Patent JPS56149012A successfully refreshed from Google Patents.
US3134816A
Expired / Lapsed
US
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Preparation of secondary fluoroalkyl amines
Assignee: Pennwalt Corp
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Filing: 1959-12-16
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Granted: 1964-05-26
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Expires: 1979-12-16
Abstract
No abstract record available.
Inventors
- 👤 Francis L Scott
- 👤 Robert E Oesterling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:03
CPC Classifications
C; C07; C07C; C07C215/00; C07C215/02; C07C215/04; C07C215/06; C07C215/08; C07C209/00; C07C209/04; C07C209/06; C07C209/08; C07C209/62; C07C211/00; C07C211/01; C07C211/02; C07C211/15; C07C303/00; C07C303/36; C07C303/38; C07C303/40; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR THE PREPARATION OF FLUOROALKYLAMINES OF STRUCTURE RF-CH2-NH-CH2-RF WHERE RF IS A PERFLUOROALKYL RADICAL WHICH CONSISTS OF HEATING AT A TEMPERATURE BETWEEN ABOUT 100* AND 300*C. AND AT AUTOGENOUS PRESSURE A MIXTURE OF A PRIMARY 1,1-DIHYDROPERFLUOROALKYLAMINE, A 1,1-DIHYDROPERFLUOROALKYL-P-TOLUENESULFONATE, AND A BASE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND ALKALINE EARTH METAL SALTS OF WEAK ACIDS HAVING A DISSOCIATION CONSTANT BELOW ABOUT 10**-4, THE AMOUNT OF SAID BASE BEING BETWEEN 1 AND 2 MOLES PER MOLE OF SAID 1,1-DIHYDROPERFLUOROALKYL P-TOLUENESULFONATE.
Claim 2
Dependent Claim
83 words
A PROCESS FOR THE PREPARATION OF FLUOROALKYLAMINES OF STRUCTURE RF-CH2-NH-CH2-RF WHERE RF IS A PERFLUOROALKYL RADICAL WHICH CONSISTS OF HEATING AT A TEMPERATURE BETWEEN ABOUT 100* AND 300*C. AND AT AUTOGENOUS PRESSURE A MIXTURE OF A PRIMARY 1,1-DIHYDROPERFLUOROALKYLAMINE, A 1,1-DIHYDROPERFLUOROALKYL-P-TOLUENESULFONATE, AND A BASE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND ALKALINE EARTH METAL SALTS OF WEAK ACIDS HAVING A DISSOCIATION CONSTANT BELOW ABOUT 10**-4, THE AMOUNT OF SAID BASE BEING BETWEEN 1 AND 2 MOLES PER MOLE OF SAID 1,1-DIHYDROPERFLUOROALKYL P-TOLUENESULFONATE.
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) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |