US3846267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for cross-linking copolymer of tetrafluoroethylene and propylene by ionizing radiation
Assignee: Japan Atomic Energy Agency
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Filing: 1971-12-27
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Granted: 1974-11-05
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Expires: 1991-12-27
Abstract
Abstract 1. A METHOD FOR CROSS-LINKING A COPOLYMER OF TETRAFLUOROETHYLENE-PROPYLENE WHICH COMPRISES SUBJECTING SAID COPOLYMER OF TETRAFLUOROETHYLENE-PROPYLENE, WHEREIN THE RATIO OF TETRAFLUOROETHYLENE TO PROPYLENE IN SAID COPOLYMER IS IN THE RANGE OF 90/10 TO 20/80 TO HIGH ENERGY IONIZING RADIATION IN THE RANGE OF 10**3-10**8 RADS IN THE PRESENCE OF 0.1 TO 20 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF THE COPOLYMER, OF A CROSS-LINKING ACCELERATOR SELECTED FROM THE GROUP CONSISTING OF DI-ALLYL AMINE, DIALLYL ETHER, DI-ALLYL MELAMINE, DI-ALLYL SUCCINATE, DI-ALLYL PHTHALATE, DI-ALLYL MALEATE, TRI-ALLYL AMINE, TRI-ALLYL CYANURATE, TRI-ALLYL PHOSPHATE, AND TRI-ALLYL ISOCYANUARATE.
Inventors
- 👤 Y Tabata
- 👤 G Kojima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:34
CPC Classifications
C; C08; C08F; C08F259/00; C08F259/08; C08F255/00; C08F255/02; C08F8/00; C08F8/30; C08F8/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD FOR CROSS-LINKING A COPOLYMER OF TETRAFLUOROETHYLENE-PROPYLENE WHICH COMPRISES SUBJECTING SAID COPOLYMER OF TETRAFLUOROETHYLENE-PROPYLENE, WHEREIN THE RATIO OF TETRAFLUOROETHYLENE TO PROPYLENE IN SAID COPOLYMER IS IN THE RANGE OF 90/10 TO 20/80 TO HIGH ENERGY IONIZING RADIATION IN THE RANGE OF 10**3-10**8 RADS IN THE PRESENCE OF 0.1 TO 20 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF THE COPOLYMER, OF A CROSS-LINKING ACCELERATOR SELECTED FROM THE GROUP CONSISTING OF DI-ALLYL AMINE, DIALLYL ETHER, DI-ALLYL MELAMINE, DI-ALLYL SUCCINATE, DI-ALLYL PHTHALATE, DI-ALLYL MALEATE, TRI-ALLYL AMINE, TRI-ALLYL CYANURATE, TRI-ALLYL PHOSPHATE, AND TRI-ALLYL ISOCYANUARATE.
Claim 2
Independent Claim
93 words
A METHOD FOR CROSS-LINKING A COPOLYMER OF TETRAFLUOROETHYLENE-PROPYLENE WHICH COMPRISES SUBJECTING SAID COPOLYMER OF TETRAFLUOROETHYLENE-PROPYLENE, WHEREIN THE RATIO OF TETRAFLUOROETHYLENE TO PROPYLENE IN SAID COPOLYMER IS IN THE RANGE OF 90/10 TO 20/80 TO HIGH ENERGY IONIZING RADIATION IN THE RANGE OF 10**3-10**8 RADS IN THE PRESENCE OF 0.1 TO 20 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF THE COPOLYMER, OF A CROSS-LINKING ACCELERATOR SELECTED FROM THE GROUP CONSISTING OF DI-ALLYL AMINE, DIALLYL ETHER, DI-ALLYL MELAMINE, DI-ALLYL SUCCINATE, DI-ALLYL PHTHALATE, DI-ALLYL MALEATE, TRI-ALLYL AMINE, TRI-ALLYL CYANURATE, TRI-ALLYL PHOSPHATE, AND TRI-ALLYL ISOCYANUARATE.
References 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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |