Patent US3179711A successfully refreshed from Google Patents.
US3179711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing synthetic lubricating oil
Assignee: Sunoco Inc
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Filing: 1962-12-03
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Granted: 1965-04-20
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Expires: 1982-12-03
Abstract
No abstract record available.
Inventors
- 👤 Donald H Antonsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:54
CPC Classifications
C; C10; C10G; C10G50/00; C10G50/02; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
METHOD OF PREPARING A SYNTHETIC LUBRICATING OIL WHICH COMPRISES CONTACTING STRAIGHT CHAIN ALPHA OLEFIN OF THE C6-C14 RANGE IN A LIQUID REACTION MEDIUM SELECTED FROM THE GROUP CONSISTING OF SATURATED HYDROCARBONS, HALOBENZENES HAVING 1-2 HALOGEN ATOMS, TRIHALOETHANES, TETRAHALOETHANES, TRIHALOETHYLENES AND TETRAHALOETHYLENES, IN WHICH HALOHYDROCARBONS THE HALOGEN IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND FLUORINE, AT A TEMPERATURE IN THE RANGE OF 0-50*C. WITH A CATALYST SYSTEM FORMED FROM AN ALUMINUM ALKYL SEQUICHLORIDE, TITANIUM TETRACHLORIDE AND A TETRAALKYL SILICATE IN WHICH THE ALKYL GROUPS EACH HAVE 1-4 CARBON ATOMS AND ARE UNBRANCHED, THE AMOUNTS OF THE ALUMINUM ALKYL SESQUICHLORIDE AND TITANIUM TETRACHLORIDE BEING SUCH THAT THE ATOMIC RATIO OF AL TO TI IS IN THE RANGE OF 0.8-2.5 AND THE AMOUNT OF SAID SILICATE BEING SUCH THAT THE ATOMIC RATIO OF O TO AL IS IN THE RANGE OF 0.4-0.8, AND THEREAFTER SEPARATING FROM THE REACTION MIXTURE OLEFIN POLYMER OF LUBRICATING OIL BOILING RANGE.
Claim 2
Dependent Claim
155 words
METHOD OF PREPARING A SYNTHETIC LUBRICATING OIL WHICH COMPRISES CONTACTING STRAIGHT CHAIN ALPHA OLEFIN OF THE C6-C14 RANGE IN A LIQUID REACTION MEDIUM SELECTED FROM THE GROUP CONSISTING OF SATURATED HYDROCARBONS, HALOBENZENES HAVING 1-2 HALOGEN ATOMS, TRIHALOETHANES, TETRAHALOETHANES, TRIHALOETHYLENES AND TETRAHALOETHYLENES, IN WHICH HALOHYDROCARBONS THE HALOGEN IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND FLUORINE, AT A TEMPERATURE IN THE RANGE OF 0-50*C. WITH A CATALYST SYSTEM FORMED FROM AN ALUMINUM ALKYL SEQUICHLORIDE, TITANIUM TETRACHLORIDE AND A TETRAALKYL SILICATE IN WHICH THE ALKYL GROUPS EACH HAVE 1-4 CARBON ATOMS AND ARE UNBRANCHED, THE AMOUNTS OF THE ALUMINUM ALKYL SESQUICHLORIDE AND TITANIUM TETRACHLORIDE BEING SUCH THAT THE ATOMIC RATIO OF AL TO TI IS IN THE RANGE OF 0.8-2.5 AND THE AMOUNT OF SAID SILICATE BEING SUCH THAT THE ATOMIC RATIO OF O TO AL IS IN THE RANGE OF 0.4-0.8, AND THEREAFTER SEPARATING FROM THE REACTION MIXTURE OLEFIN POLYMER OF LUBRICATING OIL BOILING RANGE.
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |