US4524232A
Expired / Lapsed
US
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Process for producing high viscosity index lubes
Assignee: Mobil Oil AS
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Filing: 1984-01-04
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Granted: 1985-06-18
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Expires: 2004-01-04
Abstract
Abstract A combination process for producing high viscosity index lubes from light olefins is provided wherein light olefins are first passed over a small pore zeolite and the liquid product therefrom is then processed over an intermediate pore zeolite to provide a lubricating oil with a higher viscosity, high Viscosity Index and low pour point in greater yield than obtained with either of the catalysts alone.
Inventors
- 👤 Arthur W. Chester
- 👤 William E. Garwood
- 👤 Stanley J. Lucki
- 👤 Samuel A. Tabak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:39
CPC Classifications
C; C10; C10G; C10G69/00; C10G69/02; C10G69/12; C10G69/126; C10G50/00; C10G50/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
115 words
A process for synthesizing lubricating oils from C 2 -C 16 olefins comprising passing an olefinic feedstock containing same in a first stage over a ZSM-23 catalyst or its hydrogen form under suitable conditions of time, temperature and pressure to form a liquid product boiling below the lube oil range and thereafter in a second stage passing the liquid effluent from said first stage over a ZSM-5 type catalyst having a pore size greater than about 5 angstroms or hydrogen form thereof under the same or other suitable conditions of time, temperature and pressure to further increase the carbon content of said liquid effluent and separating lubricant oil product from the second stage reaction zone.
Claim 2
Dependent Claim
115 words
A process for synthesizing lubricating oils from C 2 -C 16 olefins comprising passing an olefinic feedstock containing same in a first stage over a ZSM-23 catalyst or its hydrogen form under suitable conditions of time, temperature and pressure to form a liquid product boiling below the lube oil range and thereafter in a second stage passing the liquid effluent from said first stage over a ZSM-5 type catalyst having a pore size greater than about 5 angstroms or hydrogen form thereof under the same or other suitable conditions of time, temperature and pressure to further increase the carbon content of said liquid effluent and separating lubricant oil product from the second stage reaction zone.
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein said olefins are C 3 -C 4 alpha olefins or mixtures thereof.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein the respective catalysts are HZSM-23 and HZSM-5.
Claim 5
Dependent Claim
17 words
The process of claim 1 wherein said olefins have from about 2 to about 8 carbon atoms.
References Cited (Backward Citations)
US4414423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-17 | 1988-12-17 | 1989-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-17 | 1992-12-17 | 1993-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-17 | 1996-12-17 | 1997-06-18 | $7700.00 | Window Closed / Lapsed |