US2773053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene polymerization with catalyst of group va metal oxide and alkaline earth hydride
Assignee: Standard Oil Co
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Filing: 1953-07-22
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Granted: 1956-12-04
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Expires: 1973-07-22
Abstract
No abstract record available.
Inventors
- 👤 Field Edmund
- 👤 Feller Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:41
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S260/00; Y10S260/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN A PROCESS FOR THE PRODUCTION OF A POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 300, THE STEPS OF CONTACTING ETHYLENE AT A REACTION TEMPERATURE BETWEEN ABOUT 75* C. AND ABOUT 325* C. WITH AN ALKALINE EARTH METAL HYDRIDE AND A CATALYST PREPARED BY TREATING A GROUP VA METAL PENTOXIDE SUPPORTED UPON A DIFFICULTLY REDUCIBLE METAL OXIDE WITH A REDUCING GAS AT A TEMPERATURE BETWEEN ABOUT 350* C. AND ABOUT 850* C. TO PRODUCE A CATALYST CONTAINING A LOWER-VALENT GROUP VA METAL OXIDE, AND SEPARATING A POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 300 THUS PRODUCED.
Claim 2
Dependent Claim
100 words
IN A PROCESS FOR THE PRODUCTION OF A POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 300, THE STEPS OF CONTACTING ETHYLENE AT A REACTION TEMPERATURE BETWEEN ABOUT 75* C. AND ABOUT 325* C. WITH AN ALKALINE EARTH METAL HYDRIDE AND A CATALYST PREPARED BY TREATING A GROUP VA METAL PENTOXIDE SUPPORTED UPON A DIFFICULTLY REDUCIBLE METAL OXIDE WITH A REDUCING GAS AT A TEMPERATURE BETWEEN ABOUT 350* C. AND ABOUT 850* C. TO PRODUCE A CATALYST CONTAINING A LOWER-VALENT GROUP VA METAL OXIDE, AND SEPARATING A POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 300 THUS PRODUCED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |