US3008948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst of ortho vanadium ester and organo-aluminum compound and ethylene polymerization thereby
Assignee: Union Carbide Corp
•
Filing: 1957-06-26
•
Granted: 1961-11-14
•
Expires: 1977-06-26
Abstract
No abstract record available.
Inventors
- 👤 Guido B Stampa
- 👤 Alford G Farnham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:41
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
METHOD FOR POLYMERIZING ETHYLENE TO A NORMALLY SOLID POLYMER FREE FROM HALOGEN RESIDUES WHICH COMPRISES CONTACTING ETHYLENE UNDER POLYMERIZING CONDITIONS WITH A CATALYST COMPOSITION CONSISTING ESSENTIALLY OF AN ORGANOALUMINUM COMPOUND FREE FROM HALOGEN AND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FORMULA A1R3 AND COMPOUNDS HAVING THE FORMULA A1R2H WHEREIN R IS A MONOVALENT HYDROCARBON RADICAL, AND A VANADIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN ORTHO VANADIUM ESTER HAVING THE FORMULA R3VO4 WHEREIN R IS AN ALKYL GROUP, THE PARTIALLY HYDROLYZED ESTERS THEREOF OBTAINED BY HYDROLYZING SAID ORTHO VANADIUM ESTER WITH BETWEEN 1 AND 1.5 MOLES OF WATER PER MOLE OF SAID ORTHO VANADIUM ESTER, AND MIXTURES OF SAID ORTHO VANADIUM ESTERS AND SAID PARTIALLY HYDROLYZED ESTERS, SAID CATALYST COMPOSITION BEING DISPERSED IN AN INERT HYDROCARBON LIQUID.
Claim 2
Dependent Claim
131 words
METHOD FOR POLYMERIZING ETHYLENE TO A NORMALLY SOLID POLYMER FREE FROM HALOGEN RESIDUES WHICH COMPRISES CONTACTING ETHYLENE UNDER POLYMERIZING CONDITIONS WITH A CATALYST COMPOSITION CONSISTING ESSENTIALLY OF AN ORGANOALUMINUM COMPOUND FREE FROM HALOGEN AND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FORMULA A1R3 AND COMPOUNDS HAVING THE FORMULA A1R2H WHEREIN R IS A MONOVALENT HYDROCARBON RADICAL, AND A VANADIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN ORTHO VANADIUM ESTER HAVING THE FORMULA R3VO4 WHEREIN R IS AN ALKYL GROUP, THE PARTIALLY HYDROLYZED ESTERS THEREOF OBTAINED BY HYDROLYZING SAID ORTHO VANADIUM ESTER WITH BETWEEN 1 AND 1.5 MOLES OF WATER PER MOLE OF SAID ORTHO VANADIUM ESTER, AND MIXTURES OF SAID ORTHO VANADIUM ESTERS AND SAID PARTIALLY HYDROLYZED ESTERS, SAID CATALYST COMPOSITION BEING DISPERSED IN AN INERT HYDROCARBON LIQUID.
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) | 1964-11-13 | 1965-05-15 | 1965-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-13 | 1969-05-15 | 1969-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-13 | 1973-05-15 | 1973-11-14 | $7700.00 | Window Closed / Lapsed |