US3907924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing synthetic lubricating oil
Assignee: Lion Fat and Oil Co Ltd
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Filing: 1974-02-26
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Granted: 1975-09-23
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Expires: 1994-02-26
Abstract
Abstract A method of producing a synthetic lubricating oil which comprises polymerizing a mixture of C8-C10 Alpha -olefins which contains less than 30 mol % of C9 Alpha -olefin and having of average carbon number of 8.7 to 9.7 with the use of Ziegler catalyst or a ternary catalyst made from an alkali metal hydride compound, aluminium halide and titanium halide, and separating an olefin polymer ranging within the boiling point of the lubricating oil from the resulting polymerization reactant.
Inventors
- 👤 Hiroshi Isa
- 👤 Hajime Tomooka
- 👤 Yoshihiko Murakami
- 👤 Kenji Karube
- 👤 Takeshi Inomiya
- 👤 Masuzo Nagayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:59
CPC Classifications
C; C10; C10G; C10G50/00; C10G50/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
208 words
IN A METHOD OF PRODUCING A SYNTHETIC LUBRICATING OIL WHICH COMPRISES POLYMERIZING A FEED OLEFIN BY CONTACTING SAID FEED OLEFIN WITH A CATALYST SYSTEM SELECTED FROM THE GROUP CONSISTING OF (1) A CATALYST COMPLEX PREPARED FROM A TITANIUM HADIDE AND AT LEAST ONE KIND OF ALKYL ALUMINUM COMPOUND SELECTED FROM THE GROUP CONSISTING OG AIR3 AIR2 AIR2.5 CL1.5 AND AIRCL2, WHEREIN R IS ALKYL, AND (2) A TERNARY CATALYST CONSISTIMG ESSENTIALLY OF ALKALI METAL HYDRIDE COMPOUND, AN ALUMINUM HALIDE AND A TITANIUM HALIDE THE IMPROVEMENT WHICH COMPRISES: SAID FEED OLEFIN CONTAINS FROM ABOUT 90 TO 100 MOLE PERCENT OF A MIXTURE OF A-OLEFINS SELECTED FROM THE GROUP CONSISTING OF OCETENE-1, NONEENE-1 AND DECENE-1,SAID MIXTURE CONTAINING LESS THAN 30 MOLE PERCENT OF NONENE-1 AND HAVING AN AVERAGE CARBON ATOM NUMBER IN THE RANGE OF 8.7 TO 9.7, AND THE BALANCE OF THE FED OLEFIN IS A-OLEFINS OF LOWER CARBON ATOM NUMBER AND RECOVERING FROM THE POLYMERIZATION REACTION MIXTURE A SYNTHETIC LUBRICATING OIL HAVING A VICOSITY AT 210*F OF ABOVE 3.5 CENTISTOKES, A VISCOSITY OF 100*F OF ABOVE 16.5 CENTISTOKES, A VISCOSITY AT -40* OF BELOW 2,600 CENTISTOKES, A FLASH POINT ABOVE 400*F A FREE POINT ABOVE 475*F, A POUR POINT OF BELOW -65*F AND A VICOSITY INDEX ABOVE 120.
Claim 2
Dependent Claim
208 words
IN A METHOD OF PRODUCING A SYNTHETIC LUBRICATING OIL WHICH COMPRISES POLYMERIZING A FEED OLEFIN BY CONTACTING SAID FEED OLEFIN WITH A CATALYST SYSTEM SELECTED FROM THE GROUP CONSISTING OF (1) A CATALYST COMPLEX PREPARED FROM A TITANIUM HADIDE AND AT LEAST ONE KIND OF ALKYL ALUMINUM COMPOUND SELECTED FROM THE GROUP CONSISTING OG AIR3 AIR2 AIR2.5 CL1.5 AND AIRCL2, WHEREIN R IS ALKYL, AND (2) A TERNARY CATALYST CONSISTIMG ESSENTIALLY OF ALKALI METAL HYDRIDE COMPOUND, AN ALUMINUM HALIDE AND A TITANIUM HALIDE THE IMPROVEMENT WHICH COMPRISES: SAID FEED OLEFIN CONTAINS FROM ABOUT 90 TO 100 MOLE PERCENT OF A MIXTURE OF A-OLEFINS SELECTED FROM THE GROUP CONSISTING OF OCETENE-1, NONEENE-1 AND DECENE-1,SAID MIXTURE CONTAINING LESS THAN 30 MOLE PERCENT OF NONENE-1 AND HAVING AN AVERAGE CARBON ATOM NUMBER IN THE RANGE OF 8.7 TO 9.7, AND THE BALANCE OF THE FED OLEFIN IS A-OLEFINS OF LOWER CARBON ATOM NUMBER AND RECOVERING FROM THE POLYMERIZATION REACTION MIXTURE A SYNTHETIC LUBRICATING OIL HAVING A VICOSITY AT 210*F OF ABOVE 3.5 CENTISTOKES, A VISCOSITY OF 100*F OF ABOVE 16.5 CENTISTOKES, A VISCOSITY AT -40* OF BELOW 2,600 CENTISTOKES, A FLASH POINT ABOVE 400*F A FREE POINT ABOVE 475*F, A POUR POINT OF BELOW -65*F AND A VICOSITY INDEX ABOVE 120.
Claim 3
Dependent Claim
18 words
A method according to claim 1 wherein said feed olefin consists of 100 mole percent of said mixture.
Claim 4
Dependent Claim
53 words
A method according to claim 1 wherein, in said recovering step, the polymerization reaction iS first treated to remove unreacted feed olefin and olefin dimers, then the remainder of the polymerization reaction mixture is fractionally distilled to recover a synthetic lubricating oil fraction and hydrogenating said fraction to obtain said synthetic lubricating oil.
Claim 5
Dependent Claim
23 words
A method according to claim 1, in which said mixture has an average carbon atom number in the range of 8.8 to 9.2.
Claim 6
Dependent Claim
27 words
A method according to claim 1 wherein the catalyst is said catalyst complex (1) having a molar ratio of Al:Ti in the range of 0.5 to 5.0:1.
Claim 7
Dependent Claim
44 words
A method according to claim 1 in which the catalyst in said ternary catalyst (2) in which the molar ratio of alkali metal hydride compound:aluminum halide is from 1:0.5 to 1:6, and the molar ratio of titanium halide:aluminum halide is from 1:0.5 to 1:2.
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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |