US2880201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic process
Assignee: Standard Oil Co
•
Filing: 1956-10-02
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Granted: 1959-03-31
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Expires: 1976-10-02
Abstract
No abstract record available.
Inventors
- 👤 Edwin F Peters
- 👤 Bernard L Evering
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:01
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A PROCESS FOR THE PREPARATION OF A NORMALLY SOLID POLYMER WHICH COMPRISES CONTACTING ETHYLENE IN THE PRESENCE OF A LIQUID HYDROCARBON REACTION MEDIUM UNDER POLYMERIZATION CONDITIONS INCLUDING A SUITABLE TEMPERATURE BETWEEN ABOUT 90* C. AND ABOUT 180* C. WITH A CALCINED CATALYST CONSISTING INITIALLY OF A MINOR PROPORTION BY WEIGHT OF V2O5 SUPPORTED UPON A MAJOR PROPORTION BY WEIGHT OF A POROUS, DIFFICULTLY REDUCIBLE METAL OXIDE, RECOVERING FROM SAID PROCESS A CATALYST CONTAINING OCCLUDED NORMALLY SOLID POLYMER, EXTRACTING AT LEAST A FRACTION OF SAID NORMALLY SOLID POLYMER FROM SAID CATALYST, THEREAFTER REMOVING CARBONACEOUS RESIDUES FROM THE EXTRACTED CATALYST BY OXIDATION, AND RETURNING CATALYST THUS REGENERATED AND OXIDIZED TO SAID PROCESS.
Claim 2
Dependent Claim
110 words
A PROCESS FOR THE PREPARATION OF A NORMALLY SOLID POLYMER WHICH COMPRISES CONTACTING ETHYLENE IN THE PRESENCE OF A LIQUID HYDROCARBON REACTION MEDIUM UNDER POLYMERIZATION CONDITIONS INCLUDING A SUITABLE TEMPERATURE BETWEEN ABOUT 90* C. AND ABOUT 180* C. WITH A CALCINED CATALYST CONSISTING INITIALLY OF A MINOR PROPORTION BY WEIGHT OF V2O5 SUPPORTED UPON A MAJOR PROPORTION BY WEIGHT OF A POROUS, DIFFICULTLY REDUCIBLE METAL OXIDE, RECOVERING FROM SAID PROCESS A CATALYST CONTAINING OCCLUDED NORMALLY SOLID POLYMER, EXTRACTING AT LEAST A FRACTION OF SAID NORMALLY SOLID POLYMER FROM SAID CATALYST, THEREAFTER REMOVING CARBONACEOUS RESIDUES FROM THE EXTRACTED CATALYST BY OXIDATION, AND RETURNING CATALYST THUS REGENERATED AND OXIDIZED TO SAID PROCESS.
References Cited (Backward Citations)
US2780617A
Cited
US2791575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |