Patent US1369581A successfully refreshed from Google Patents.
Patent US2900372A successfully refreshed from Google Patents.
US2900372A
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Ethylene polymerization with catalysts prepared from molybdenum pentachloride and reducing compounds
Assignee: EIDP Inc
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Filing: 1954-08-30
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Granted: 1959-08-18
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Expires: 1974-08-30
Abstract
No abstract record available.
Inventors
- 👤 Gresham William Frank
- 👤 Merckling Nikolaus George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:53
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
PROCESS FOR POLYMERIZING ETHYLENE WHICH COMPRISES REACTING ETHYLENE WITH THE REACTION PRODUCT OF MOLYBDENUM PENTACHLORIDE AND A SUFFICIENT QUANTITY OF A COMPOUND HAVING AT LEAST ONE METAL TO HYDROCARBON BOND TO REDUCE SAID MOLYBDENUM, SAID COMPOUND HAVING AT LEAST ONE METAL TO HYDROCARBON BOND BEING SELECTED FROM THE CLASS CONSISTING OF GRIGNARD REAGENTS, LITHIUM AND ALUMINUM TETRAALKYLS AND TIN TETRAALKYLS, SAID ALKYL GROUPS HAVING FROM 4 TO 18 CARBON ATOMS, IN THE PRESENCE OF AN INERT LIQUID HYDROCARBON, AT A TEMPERATURE OF 0* TO 300* C. AND A PRESSURE OF 1 TO 200 ATMOSPHERES, SAID REACTION PRODUCT BEING EMPLOYED IN A QUANTITY OF 0.0001 TO 10% BY WEIGHT OF THE ETHYLENE, AND RECOVERING A SOLID, HIGH MOLECULAR WEIGHT POLYMER OF ETHYLENE.
Claim 2
Dependent Claim
121 words
PROCESS FOR POLYMERIZING ETHYLENE WHICH COMPRISES REACTING ETHYLENE WITH THE REACTION PRODUCT OF MOLYBDENUM PENTACHLORIDE AND A SUFFICIENT QUANTITY OF A COMPOUND HAVING AT LEAST ONE METAL TO HYDROCARBON BOND TO REDUCE SAID MOLYBDENUM, SAID COMPOUND HAVING AT LEAST ONE METAL TO HYDROCARBON BOND BEING SELECTED FROM THE CLASS CONSISTING OF GRIGNARD REAGENTS, LITHIUM AND ALUMINUM TETRAALKYLS AND TIN TETRAALKYLS, SAID ALKYL GROUPS HAVING FROM 4 TO 18 CARBON ATOMS, IN THE PRESENCE OF AN INERT LIQUID HYDROCARBON, AT A TEMPERATURE OF 0* TO 300* C. AND A PRESSURE OF 1 TO 200 ATMOSPHERES, SAID REACTION PRODUCT BEING EMPLOYED IN A QUANTITY OF 0.0001 TO 10% BY WEIGHT OF THE ETHYLENE, AND RECOVERING A SOLID, HIGH MOLECULAR WEIGHT POLYMER OF ETHYLENE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |