Patent US5411257A successfully refreshed from Google Patents.
US3259668A
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Preparation of synthetic lubricating oil
Assignee: Sunoco Inc
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Filing: 1964-01-13
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Granted: 1966-07-05
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Expires: 1984-01-13
Abstract
No abstract record available.
Inventors
- 👤 Donald H Antonsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:35
CPC Classifications
C; C10; C10M; C10M3/00; C08; C08F; C08F10/00; C08F10/14; C10G; C10G50/00; C10G50/02; C10M2205/00; C10M2205/02; C10M2205/028; C10N; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/08; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
METHOD OF PREPARING A SYNTHETIC LUBRICATING OIL WHICH COMPRISES CONTACTING STRAIGHT CHAIN ALPHA OLEFIN OF THE C6-C14 RANGE AT A TEMPERATURE IN THE RANGE OF 0-50*C. WITH A CATALYST SYSTEM FORMED FROM (1) AN ALUMINUM ALKYL SESQUICHLORIDE, (2) TITANIUM TETRACHLORIDE, AND (3) AN AMINE OXIDE SELECTED FROM THE GROUP CONSISTING OF TERTIARY AMINE N-OXIDES AND AROMATIC AMINE N-OXIDES WHEREIN THE NITROGEN ATOM IS A MEMBER OF AN AROMATIC RING, THE AMOUNTS OF SAID 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 AMINE OXIDE BEING SUCH THAT THE ATOMIC RATIO OF O TO AL IS IN THE RANGE OF 0.2-0.6, AND THEREAFTER SEPARATING FROM THE REACTION MIXTURE OLEFIN POLYMER OF LUBRICATING OIL BOILING RANGE.
Claim 2
Dependent Claim
132 words
METHOD OF PREPARING A SYNTHETIC LUBRICATING OIL WHICH COMPRISES CONTACTING STRAIGHT CHAIN ALPHA OLEFIN OF THE C6-C14 RANGE AT A TEMPERATURE IN THE RANGE OF 0-50*C. WITH A CATALYST SYSTEM FORMED FROM (1) AN ALUMINUM ALKYL SESQUICHLORIDE, (2) TITANIUM TETRACHLORIDE, AND (3) AN AMINE OXIDE SELECTED FROM THE GROUP CONSISTING OF TERTIARY AMINE N-OXIDES AND AROMATIC AMINE N-OXIDES WHEREIN THE NITROGEN ATOM IS A MEMBER OF AN AROMATIC RING, THE AMOUNTS OF SAID 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 AMINE OXIDE BEING SUCH THAT THE ATOMIC RATIO OF O TO AL IS IN THE RANGE OF 0.2-0.6, 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) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |