Patent US3682589A successfully refreshed from Google Patents.
US3024293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing aluminum chloride catalyst from polypropylene oil
Assignee: Sinclair Refining Co
•
Filing: 1959-11-04
•
Granted: 1962-03-06
•
Expires: 1979-11-04
Abstract
No abstract record available.
Inventors
- 👤 John W Nelson
- 👤 John A Lundquist
- 👤 David W Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:21
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A METHOD FOR THE PRODUCTION OF POLYPROPYLENE OIL WHICH COMPRISES POLYMERIZING PROPYLENE IN THE LIQUID PHASE AND IN THE PRESENCE OF AN INERT HYDROCARBON DILUENT AND DISSOLVED A1C13 CATALYST TO OBTAIN POLYMER OIL, COMBINING THE REACTION PRODUCT WITH A SUBSTANTIALLY WATERFREE GLYCOL OF ABOUT 2 TO 5 CARBON ATOMS, AND SEPARATING THE RESULTING SUBSTANTIALLY WATER-FREE GLYCOL-CATALYST MIXTURE BY LIQUID-LIQUID SEPARATION FROM THE POLYMER OIL TO REMOVE THE CATALYST TO OBTAIN A HAZE-FREE POLYMER OIL WHILE AVOIDING HYDROLYSIS OF THE CATALYST.
Claim 2
Independent Claim
80 words
A METHOD FOR THE PRODUCTION OF POLYPROPYLENE OIL WHICH COMPRISES POLYMERIZING PROPYLENE IN THE LIQUID PHASE AND IN THE PRESENCE OF AN INERT HYDROCARBON DILUENT AND DISSOLVED A1C13 CATALYST TO OBTAIN POLYMER OIL, COMBINING THE REACTION PRODUCT WITH A SUBSTANTIALLY WATERFREE GLYCOL OF ABOUT 2 TO 5 CARBON ATOMS, AND SEPARATING THE RESULTING SUBSTANTIALLY WATER-FREE GLYCOL-CATALYST MIXTURE BY LIQUID-LIQUID SEPARATION FROM THE POLYMER OIL TO REMOVE THE CATALYST TO OBTAIN A HAZE-FREE POLYMER OIL WHILE AVOIDING HYDROLYSIS OF THE CATALYST.
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) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |