US3142660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modification and cross-linking of fluorocarbon polymers
Assignee: Uniroyal Inc
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Filing: 1961-11-30
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Granted: 1964-07-28
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Expires: 1981-11-30
Abstract
No abstract record available.
Inventors
- 👤 Robert P Conger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:51
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/138
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A METHOD OF MODIFYING A FLUOROCARBON ELASTOMER WHICH IS A SUBSTANTIALLY SATURATED, LINEAR, RUBBERY POLYMER OF A FLUORINATED CARBON COMPOUND WHEREIN ANY SUBSTITUENTS OF SAID COMPOUND OTHER THAN FLUORINE ARE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, CHLORINE, BROMINE AND NITROSO, COMPRISING MIXING 100 PARTS BY WEIGHT OF SAID ELASTOMER WITH FROM 2 TO 10 PARTS BY WEIGHT OF AN ALKALI METAL SALT OF A PHENOLIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF 2,6-DIMETHYLOL-4-(LOWER ALKYL) PHENOLS AND 2,2''-METHYLENE-BIS(4-CHLORO-6-METHYLOLPHENOL), AND SUBJECTING THE MIXTURE OF TIME-TEMPERATURE CONDITIONS SUFFICIENT TO PRODUCE SUBSTANTIAL REACTION BETWEEN SAID ELASTOMER AND PHENOXIDE.
Claim 2
Independent Claim
95 words
A METHOD OF MODIFYING A FLUOROCARBON ELASTOMER WHICH IS A SUBSTANTIALLY SATURATED, LINEAR, RUBBERY POLYMER OF A FLUORINATED CARBON COMPOUND WHEREIN ANY SUBSTITUENTS OF SAID COMPOUND OTHER THAN FLUORINE ARE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, CHLORINE, BROMINE AND NITROSO, COMPRISING MIXING 100 PARTS BY WEIGHT OF SAID ELASTOMER WITH FROM 2 TO 10 PARTS BY WEIGHT OF AN ALKALI METAL SALT OF A PHENOLIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF 2,6-DIMETHYLOL-4-(LOWER ALKYL) PHENOLS AND 2,2''-METHYLENE-BIS(4-CHLORO-6-METHYLOLPHENOL), AND SUBJECTING THE MIXTURE OF TIME-TEMPERATURE CONDITIONS SUFFICIENT TO PRODUCE SUBSTANTIAL REACTION BETWEEN SAID ELASTOMER AND PHENOXIDE.
References Cited (Backward Citations)
US2454209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |