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US3093624A
Expired / Lapsed
US
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Copolymers of olefines containing at least three carbon atoms
Assignee: EIDP Inc
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Filing: 1956-01-25
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Granted: 1963-06-11
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Expires: 1976-01-25
Abstract
No abstract record available.
Inventors
- 👤 William F Gresham
- 👤 Hunt Madison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:00
CPC Classifications
C; C08; C08F; C08F210/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
COPOLYMER ELASTOMERS OF AT LAST TWO TERMINALLY UNSATURATED STRAIGHT CHAIN MONOOLEFINS EACH CONTAINING FROM 3 TO 12 CARBON ATOMS, THE SECOND OLEFIN BEING PRESENT IN AN AMOUNT AT LEAST 5% OF THE TOTAL COPOLUMER, SAID COPOLYMER HAVING AN INTRINSIC VISCOSITY OF AT LEAST ABOUT 2, AND BEING PREPARED BY THE USE OF A CATALYST THE ESSENTIAL CONSTITUENT OF WHICH IS A TITANIUM COMPOUND IN WHICH THE TITANIUM HAS A VALENCE OF LESS THAN 4 AND WHICH CATALYST IS PREPARED BY THE REACTION OF A LITHIUM ALUMIMUM ALKYL WITH TITANIUM TETRACHLORIDE IN A HYDROCARBON SOLVENT AND IN THE ABSENCE OF WATER AND OXYGEN.
Claim 2
Dependent Claim
102 words
COPOLYMER ELASTOMERS OF AT LAST TWO TERMINALLY UNSATURATED STRAIGHT CHAIN MONOOLEFINS EACH CONTAINING FROM 3 TO 12 CARBON ATOMS, THE SECOND OLEFIN BEING PRESENT IN AN AMOUNT AT LEAST 5% OF THE TOTAL COPOLUMER, SAID COPOLYMER HAVING AN INTRINSIC VISCOSITY OF AT LEAST ABOUT 2, AND BEING PREPARED BY THE USE OF A CATALYST THE ESSENTIAL CONSTITUENT OF WHICH IS A TITANIUM COMPOUND IN WHICH THE TITANIUM HAS A VALENCE OF LESS THAN 4 AND WHICH CATALYST IS PREPARED BY THE REACTION OF A LITHIUM ALUMIMUM ALKYL WITH TITANIUM TETRACHLORIDE IN A HYDROCARBON SOLVENT AND IN THE ABSENCE OF WATER AND OXYGEN.
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) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |