US3011995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
The use of diallyl terephthalate or tetraallyl terephthalamide to promote the curing of fluorocarbon elastomers with dicumyl peroxide and magnesium oxide
Assignee: EIDP Inc
•
Filing: 1960-04-12
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Granted: 1961-12-05
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Expires: 1980-04-12
Abstract
No abstract record available.
Inventors
- 👤 John F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:33
CPC Classifications
C; C08; C08F; C08F259/00; C08F259/08; C08K; C08K13/00; C08K13/02; C08K5/00; C08K5/0008; C08K5/04; C08K5/10; C08K5/12; C08K5/14; C08K5/16; C08K5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
A PROCESS OF CURING A FLUOROCARBON ELASTOMER SELECTED FROM THE GROUP CONSISTING OF A VINYLIDENE FLUORIDE-HEXAFLURORPROPENE COPOLYMER CONTAINING FROM ABOUT 30 TO 70 PERCENT BY WEIGHT OF VINYLIDENE FLUORIDE AND FROM ABOUT 70 TO 30 PERCENT BY WEIGHT OF HEXAFLURORPROPENE AND A VINYLIDENE, FLUORIDE-HEXAFLUOROPROPENE-TETRAFLUOROETHYLENE COPOLYMER CONTAINING FROM ABOUT 3 TO 35 PERCENT BY WEIGHT OF TETRAFLUOROETHYLENE UNITS, THE BALANCE BEING VINYLIDENE FLUORIDE AND HEXAFLUOROPROPENE UNITS, WITH THE WEIGHT RATIO OF VINYLIDENE FLUORIDE UNITS TO HEXAFLUOROPROPENE UNITS HAVING A VALUE RANGING FROM ABOUT 2.33:1 TO 0.667:1 WHICH COMPRISES INCORPORATIN THEREWITH, PER 100 PARTS BY WEIGHT OF SAID ELASTOMER, (A) FROM ABOUT 5 TO 20 PARTS BY WEIGHT OF MAGNESIUM OXIDE, (B) FROM ABOUT 2 TO 10 PARTS BY WEIGHT OF DICUMYL PEROIXDE AND (C) FROM ABOUT 1 TO 3 PARTS BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIALLYL TEREPHTHALATE AND TETRAALLYL TEREPHTHALAMIDE, FOLLOWED BY HEATING AT TEMPERATURES BETWEEN ABOUT 100 AND 200*C., SO AS TO EFFECT A CURE.
Claim 2
Dependent Claim
161 words
A PROCESS OF CURING A FLUOROCARBON ELASTOMER SELECTED FROM THE GROUP CONSISTING OF A VINYLIDENE FLUORIDE-HEXAFLURORPROPENE COPOLYMER CONTAINING FROM ABOUT 30 TO 70 PERCENT BY WEIGHT OF VINYLIDENE FLUORIDE AND FROM ABOUT 70 TO 30 PERCENT BY WEIGHT OF HEXAFLURORPROPENE AND A VINYLIDENE, FLUORIDE-HEXAFLUOROPROPENE-TETRAFLUOROETHYLENE COPOLYMER CONTAINING FROM ABOUT 3 TO 35 PERCENT BY WEIGHT OF TETRAFLUOROETHYLENE UNITS, THE BALANCE BEING VINYLIDENE FLUORIDE AND HEXAFLUOROPROPENE UNITS, WITH THE WEIGHT RATIO OF VINYLIDENE FLUORIDE UNITS TO HEXAFLUOROPROPENE UNITS HAVING A VALUE RANGING FROM ABOUT 2.33:1 TO 0.667:1 WHICH COMPRISES INCORPORATIN THEREWITH, PER 100 PARTS BY WEIGHT OF SAID ELASTOMER, (A) FROM ABOUT 5 TO 20 PARTS BY WEIGHT OF MAGNESIUM OXIDE, (B) FROM ABOUT 2 TO 10 PARTS BY WEIGHT OF DICUMYL PEROIXDE AND (C) FROM ABOUT 1 TO 3 PARTS BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIALLYL TEREPHTHALATE AND TETRAALLYL TEREPHTHALAMIDE, FOLLOWED BY HEATING AT TEMPERATURES BETWEEN ABOUT 100 AND 200*C., SO AS TO EFFECT A CURE.
References Cited (Backward Citations)
US2820776A
Cited
US2944995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |