Patent US2908670A successfully refreshed from Google Patents.
US2908670A
Expired / Lapsed
US
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Polymerization of higher olefins to solid polymer with lithium-titanium tetrahalide catalysts
Assignee: Eastman Kodak Co
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Filing: 1956-11-01
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Granted: 1959-10-13
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Expires: 1976-11-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Hugh J Hagemeyer
- 👤 Marvin B Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:09
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
IN THE POLYMERIZATION OF AN A-MONOOLEFINIC ALIPHATIC HYDROCARBON CONTAINING 3-10 CARBON ATOMS, THE IMPROVEMENT WHICH COMPRISES EFFECTING THE POLYMERIZATION AT A TEMPERATURE OF AT LEAST 110*C. AND A PRESSURE OF AT LEAST 200 P.S.I. BY CATALYSIS WITH AN ACTIVATED CATALYTIC MIXTURE OF LITHIUM METAL AND TITANIUM POLYHALIDE SELECTED FROM THE GROUP CONSISTING OF TI CL4 TI CL3 AND TI CL2 IN A MOLE RATIO OF FROM 0.1:1 TO 10:1, SAID CATALYTIC MIXTURE BEING ACTIVATED BY HEATING AT A TEMPERATURE OF 150-250*C.
Claim 2
Dependent Claim
81 words
IN THE POLYMERIZATION OF AN A-MONOOLEFINIC ALIPHATIC HYDROCARBON CONTAINING 3-10 CARBON ATOMS, THE IMPROVEMENT WHICH COMPRISES EFFECTING THE POLYMERIZATION AT A TEMPERATURE OF AT LEAST 110*C. AND A PRESSURE OF AT LEAST 200 P.S.I. BY CATALYSIS WITH AN ACTIVATED CATALYTIC MIXTURE OF LITHIUM METAL AND TITANIUM POLYHALIDE SELECTED FROM THE GROUP CONSISTING OF TI CL4 TI CL3 AND TI CL2 IN A MOLE RATIO OF FROM 0.1:1 TO 10:1, SAID CATALYTIC MIXTURE BEING ACTIVATED BY HEATING AT A TEMPERATURE OF 150-250*C.
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) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |