US2878241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of ethylene with an aluminum halide and a metal oxide as catalyst
Assignee: Sunoco Inc
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Filing: 1956-06-21
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Granted: 1959-03-17
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Expires: 1976-06-21
Abstract
No abstract record available.
Inventors
- 👤 Schneider Abraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:17
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
PROCESS FOR PREPARING SOLID POLYMERS OF ETHYLENE WHICH COMPRISES CONTACTING, AT A TEMPERATURE OF FROM 20* C. TO 250* C. AND A PRESSURE OF FROM ATMOSPHERIC TO 1000 P. S. I. ETHYLENE DISSOLVED IN AN INERT, LIQUID SATURATED HYDROCARBON REACTION MEDIUM WITH A CATALYTIC COMPOSITION CONSISTING ESSENTIALLY OF AN ALUMINUM HALDIE AND A MATERIAL SELECTED FROM THE GROUP CONSISTING OF CHROMIUM TRIOXIDE, MOLYBENUM TRIOXIDE, TUNGSTEN TRIOXIDE, VANADIUM PENTOXIDE AND MANGANESE HEPTOXIDE.
Claim 2
Dependent Claim
71 words
PROCESS FOR PREPARING SOLID POLYMERS OF ETHYLENE WHICH COMPRISES CONTACTING, AT A TEMPERATURE OF FROM 20* C. TO 250* C. AND A PRESSURE OF FROM ATMOSPHERIC TO 1000 P. S. I. ETHYLENE DISSOLVED IN AN INERT, LIQUID SATURATED HYDROCARBON REACTION MEDIUM WITH A CATALYTIC COMPOSITION CONSISTING ESSENTIALLY OF AN ALUMINUM HALDIE AND A MATERIAL SELECTED FROM THE GROUP CONSISTING OF CHROMIUM TRIOXIDE, MOLYBENUM TRIOXIDE, TUNGSTEN TRIOXIDE, VANADIUM PENTOXIDE AND MANGANESE HEPTOXIDE.
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) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |