Patent US3926786A successfully refreshed from Google Patents.
US3926786A
Expired / Lapsed
US
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Production of lubricating oils
Assignee: Texaco Inc
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Filing: 1973-12-21
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Granted: 1975-12-16
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Expires: 1993-12-21
Abstract
Abstract Improved lubricating oils are prepared by contacting the oil with a supported hydrogenation catalyst in which the support comprises alumina, mordenite in hydrogen form and halogen.
Inventors
- 👤 Richard L Coleman
- 👤 Billy H Cummins
- 👤 William B Ashton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:14
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/44; C10G45/46; C10G45/54; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/18; B01J29/26
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
84 words
A PROCESS FOR IMPROVING THE VICOSITY INDEX OF A LUBRICATING OIL STOCK WHICH COMPRISES CONTACTING SAID LUBRICATING OIL STOCK IN THE PRESENCE OF HYDROGEN UNDER HYDROTREATING CONDITIONS WITH A CATALYST COMPRISING FROM 1 TO 8 WT. % COBALT AS THE OXIDE AND FROM 7 TO 20 WT. % MOLYBDENUM AS THE OXIDE ON A SUPPORT COMPRISING ALUMINA, SAID CATALYST CONTAINING FROM ABOUT 5 TO 30 WT. % MORDENITE IN HYDROGEN FORM AND ALSO CONTAINING FROM 0.1 TO 5 WT. TO 5 WT. % HALOGEN.
Claim 2
Dependent Claim
84 words
A PROCESS FOR IMPROVING THE VICOSITY INDEX OF A LUBRICATING OIL STOCK WHICH COMPRISES CONTACTING SAID LUBRICATING OIL STOCK IN THE PRESENCE OF HYDROGEN UNDER HYDROTREATING CONDITIONS WITH A CATALYST COMPRISING FROM 1 TO 8 WT. % COBALT AS THE OXIDE AND FROM 7 TO 20 WT. % MOLYBDENUM AS THE OXIDE ON A SUPPORT COMPRISING ALUMINA, SAID CATALYST CONTAINING FROM ABOUT 5 TO 30 WT. % MORDENITE IN HYDROGEN FORM AND ALSO CONTAINING FROM 0.1 TO 5 WT. TO 5 WT. % HALOGEN.
Claim 3
Dependent Claim
14 words
The process of claim 1 in which the lubricating stock is a deasphalted residuum.
Claim 4
Dependent Claim
15 words
The process of claim 1 in which the crude lubricating oil is a wax distillate.
Claim 5
Dependent Claim
35 words
The process of claim 1 in which the hydrotreating conditions are a temperature of 700*-825*F., a pressure of 1,000-2,500 psig, a space velocity between 0.25 and 2.0 and a hydrogen rate of 2, 000-12,000 scfb.
Claim 6
Dependent Claim
11 words
The process of claim 1 in which the halogen is fluorine.
References Cited (Backward Citations)
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US3539498A
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US3438887A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |