Patent US2908669A successfully refreshed from Google Patents.
US2908669A
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Polymerization of olefins with metal oxide catalysts promoted by alkali metal alkyls
Assignee: Eastman Kodak Co
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Filing: 1956-10-18
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Granted: 1959-10-13
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Expires: 1976-10-18
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
2026-10-24 15:02
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN THE POLYMERIZATION OF POLYMERIZABLE HYDROCARBON MATERIAL CONSISTING OF AT LEAST ONE ALIPHATIC A-MONOOLEFIN OF 2-10 CARBON ATOMS, BY MEANS OF A PARTIALLY REDUCED OXIDE OF A METAL FROM GROUPS 5A AND 6A OF THE MENDELEEFF PERIODIC TABLE SUPPORTED ON A DIFFICULTY REDUCIBLE METAL OXIDE SUPPORT, THE IMPROVEMENT IN ENHANCING THE YIELD OF SOLID HIGHLY CRYSTALLINE POLYMER WHILE OBVIATING CONCOMITANT FORMATION OF LOW MOLECULAR WEIGHT GREASES AND WAXES WHICH COMPRISES EFFECTING THE POLYMERIZATION IN AN INERT ORGANIC LIQUID VEHICLE AT A TEMPERATURE OF 75325*C. AND A PRESSURE OF 200-20,000 P.S.I. EMPLOYING, AS A PROMOTER FOR SAID PARTIALLY REDUCED METAL OXIDE CATALYST, AND ALKALI METAL ALKYL WHEREIN THE ALKYL GROUP CONTAINS 1-10 CARBON ATOMS, THE MOLE RATIO OF PROMOTER TO CATALYST BEING AT LEAST 1:1.
Claim 2
Dependent Claim
124 words
IN THE POLYMERIZATION OF POLYMERIZABLE HYDROCARBON MATERIAL CONSISTING OF AT LEAST ONE ALIPHATIC A-MONOOLEFIN OF 2-10 CARBON ATOMS, BY MEANS OF A PARTIALLY REDUCED OXIDE OF A METAL FROM GROUPS 5A AND 6A OF THE MENDELEEFF PERIODIC TABLE SUPPORTED ON A DIFFICULTY REDUCIBLE METAL OXIDE SUPPORT, THE IMPROVEMENT IN ENHANCING THE YIELD OF SOLID HIGHLY CRYSTALLINE POLYMER WHILE OBVIATING CONCOMITANT FORMATION OF LOW MOLECULAR WEIGHT GREASES AND WAXES WHICH COMPRISES EFFECTING THE POLYMERIZATION IN AN INERT ORGANIC LIQUID VEHICLE AT A TEMPERATURE OF 75325*C. AND A PRESSURE OF 200-20,000 P.S.I. EMPLOYING, AS A PROMOTER FOR SAID PARTIALLY REDUCED METAL OXIDE CATALYST, AND ALKALI METAL ALKYL WHEREIN THE ALKYL GROUP CONTAINS 1-10 CARBON ATOMS, THE MOLE RATIO OF PROMOTER TO CATALYST BEING AT LEAST 1:1.
References Cited (Backward Citations)
US2726231A
Cited
US2721189A
Cited
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 |