US3845157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon lubricants from olefin polymers
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1972-09-29
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Granted: 1974-10-29
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Expires: 1992-09-29
Abstract
Abstract 1. A PROCESS FOR THE PRODUCTION OF A SYNTHETIC HYDROCARBON LUBRICATING OIL WHICH COMPRISES THE CATALYTIC CRACKING OF A COPOLYMER OF ETHYLENE AND AN ALPHA OLEFIN OF FROM 3 TO 10 CARBON ATOMS, OF 5,000 TO 900,000 VISCOSITY AVERAGE MOLECULAR WEIGHT UNDER CONDITIONS REDUCING THE VISCOSITY OF SAID POLYMER TO A VISCOSITY WITHIN THE RANGE OF ABOUT 30 TO 70 SUS MEASURED AT 210*F., SAID CRACKING BEING CONDUCTED IN THE PRESENCE OF A CATALYST COMPRISING A RARE-EARTH-PROMOTED CRYSTALLINE ALUMINO-SILICATE ZEOLITE IN A SILICA-ALUMINA MATRIX.
Inventors
- 👤 C Woo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:00
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/10; C08; C08F; C08F8/00; C08F8/04; C10G1/002; C10G1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR THE PRODUCTION OF A SYNTHETIC HYDROCARBON LUBRICATING OIL WHICH COMPRISES THE CATALYTIC CRACKING OF A COPOLYMER OF ETHYLENE AND AN ALPHA OLEFIN OF FROM 3 TO 10 CARBON ATOMS, OF 5,000 TO 900,000 VISCOSITY AVERAGE MOLECULAR WEIGHT UNDER CONDITIONS REDUCING THE VISCOSITY OF SAID POLYMER TO A VISCOSITY WITHIN THE RANGE OF ABOUT 30 TO 70 SUS MEASURED AT 210*F., SAID CRACKING BEING CONDUCTED IN THE PRESENCE OF A CATALYST COMPRISING A RARE-EARTH-PROMOTED CRYSTALLINE ALUMINO-SILICATE ZEOLITE IN A SILICA-ALUMINA MATRIX.
Claim 2
Dependent Claim
83 words
A PROCESS FOR THE PRODUCTION OF A SYNTHETIC HYDROCARBON LUBRICATING OIL WHICH COMPRISES THE CATALYTIC CRACKING OF A COPOLYMER OF ETHYLENE AND AN ALPHA OLEFIN OF FROM 3 TO 10 CARBON ATOMS, OF 5,000 TO 900,000 VISCOSITY AVERAGE MOLECULAR WEIGHT UNDER CONDITIONS REDUCING THE VISCOSITY OF SAID POLYMER TO A VISCOSITY WITHIN THE RANGE OF ABOUT 30 TO 70 SUS MEASURED AT 210*F., SAID CRACKING BEING CONDUCTED IN THE PRESENCE OF A CATALYST COMPRISING A RARE-EARTH-PROMOTED CRYSTALLINE ALUMINO-SILICATE ZEOLITE IN A SILICA-ALUMINA MATRIX.
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |