Patent US2912424A successfully refreshed from Google Patents.
US2912424A
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Polymerization of alpha-olefins to solid polymers with catalytic mixtures of aluminum metal, a titanium compound and a tetra substituted ammonium salt
Assignee: Eastman Kodak Co
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Filing: 1955-11-29
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Granted: 1959-11-10
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Expires: 1975-11-29
Abstract
No abstract record available.
Inventors
- 👤 Jr George O Cash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:29
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
IN A POLYMERIZATION OF ALIPHATIC A-MONOOLEFINIC HYDROCARBON MATERIAL CONTAINING 2-10 CARBON ATOMS TO FORM SOLID POLYMER, THE IMPROVEMENT WHICH COMPRISES CATALYZING THE POLYMERIZATION AT A TEMPERATURE OF FROM -60* TO 150*C, AND A PRESSURE OF 50-20,000 P,S,I, WITH A MIXTURE OF ALUMINUM METAL, A TITANUM COMPOUND FROM THE GROUP CONSISTING OF TITANUM TETRACHLORIDE, TITANUM TETRABROMIDE, AND TITANUM TETRAALKOXIDES WHEREIN EACH ALKOXIDE GROUP CONTAINS 1-4 CARBON ATOMS, AND A HALOGEN CONTAINING COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
74 words
IN A POLYMERIZATION OF ALIPHATIC A-MONOOLEFINIC HYDROCARBON MATERIAL CONTAINING 2-10 CARBON ATOMS TO FORM SOLID POLYMER, THE IMPROVEMENT WHICH COMPRISES CATALYZING THE POLYMERIZATION AT A TEMPERATURE OF FROM -60* TO 150*C, AND A PRESSURE OF 50-20,000 P,S,I, WITH A MIXTURE OF ALUMINUM METAL, A TITANUM COMPOUND FROM THE GROUP CONSISTING OF TITANUM TETRACHLORIDE, TITANUM TETRABROMIDE, AND TITANUM TETRAALKOXIDES WHEREIN EACH ALKOXIDE GROUP CONTAINS 1-4 CARBON ATOMS, AND A HALOGEN CONTAINING COMPOUND OF THE FORMULA
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) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |