US4182922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic hydrocarbon lubricating oil
Assignee: Mobil Oil AS
•
Filing: 1977-12-19
•
Granted: 1980-01-08
•
Expires: 1997-12-19
Abstract
Abstract Synthetic hydrocarbon oils having excellent viscosity index and pour point combinations. They are made by a process involving the copolymerization of propylene or propylene plus higher 1-olefins with small amounts of ethylene.
Inventors
- 👤 John W. Schick
- 👤 Robert M. Gemmill, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:53
CPC Classifications
C; C10; C10M; C10M107/00; C10M107/02; C10G; C10G50/00; C10G50/02; C10M2205/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
118 words
A lubricating oil comprising a copolymer of ethylene and propylene or a copolymer of ethylene, propylene and a higher 1-olefin having from 4 to 10 carbon atoms, wherein the oil has a pour point of from about -35° F. to <-65° F. and a viscosity index of from about 100 to about 135 and wherein that portion of the copolymer formed from ethylene is from about 2% to about 10% by weight, said oil being made by a method comprising (1) reacting ethylene and propylene in the presence of (a) a vanadium-containing catalyst and (b) an aluminum-containing catalyst and (2) reacting the step (1) product with propylene or mixed propylene-higher 1-olefin in the presence of a Friedel-Crafts catalyst.
Claim 2
Dependent Claim
118 words
A lubricating oil comprising a copolymer of ethylene and propylene or a copolymer of ethylene, propylene and a higher 1-olefin having from 4 to 10 carbon atoms, wherein the oil has a pour point of from about -35° F. to <-65° F. and a viscosity index of from about 100 to about 135 and wherein that portion of the copolymer formed from ethylene is from about 2% to about 10% by weight, said oil being made by a method comprising (1) reacting ethylene and propylene in the presence of (a) a vanadium-containing catalyst and (b) an aluminum-containing catalyst and (2) reacting the step (1) product with propylene or mixed propylene-higher 1-olefin in the presence of a Friedel-Crafts catalyst.
Claim 3
Dependent Claim
24 words
The copolymer of claim 1 wherein the pour point is a maximum of -35° F. and the viscosity index is a maximum of 135.
Claim 4
Dependent Claim
23 words
The oil of claim 1 wherein that portion of the copolymer formed from ethylene is from about 4% to about 6% by weight.
Claim 5
Dependent Claim
11 words
The copolymer of claim 1 wherein the higher 1-olefin is butene.
Claim 6
Dependent Claim
11 words
The copolymer of claim 1 wherein the higher 1-olefin is hexene.
Claim 7
Dependent Claim
11 words
The copolymer of claim 1 wherein the higher 1-olefin is decene.
Claim 8
Independent Claim
90 words
A method for preparing a lubricating oil from ethylene and propylene or from ethylene and a mixture of propylene and a higher 1-olefin containing 4 to 10 carbon atoms comprising the steps of (1) reacting ethylene and propylene in the presence of (a) a vanadium-containing catalyst and (b) an aluminum-containing catalyst and (2) reacting the step (1) product with propylene or mixed propylene-higher 1-olefin in the presence of a Friedel-Crafts catalyst, such that that portion of the oil formed from ethylene is from about 2 to about 10% by weight.
Claim 9
Independent Claim
90 words
A method for preparing a lubricating oil from ethylene and propylene or from ethylene and a mixture of propylene and a higher 1-olefin containing 4 to 10 carbon atoms comprising the steps of (1) reacting ethylene and propylene in the presence of (a) a vanadium-containing catalyst and (b) an aluminum-containing catalyst and (2) reacting the step (1) product with propylene or mixed propylene-higher 1-olefin in the presence of a Friedel-Crafts catalyst, such that that portion of the oil formed from ethylene is from about 2 to about 10% by weight.
Claim 10
Dependent Claim
23 words
The method of claim 7 wherein that portion of the oil formed from ethylene is from about 4% to about 6% by weight.
Claim 11
Dependent Claim
11 words
The method of claim 7 wherein the higher 1-olefin is butene.
Claim 12
Dependent Claim
11 words
The method of claim 7 wherein the higher 1-olefin is hexene.
Claim 13
Dependent Claim
11 words
The method of claim 7 wherein the higher 1-olefin is decene.
Claim 14
Dependent Claim
31 words
The method of claim 7 wherein in step (1) the feed comprises from 60% to 80% by weight of propylene and from about 40% to about 20% by weight of ethylene.
Claim 15
Dependent Claim
24 words
The method of claim 7 wherein the reaction in step (1) is quenched by adding a monohydric alcohol containing 1 to 10 carbon atoms.
Claim 16
Dependent Claim
10 words
The method of claim 13 wherein the alcohol is n-propanol.
Claim 17
Dependent Claim
45 words
The method of claim 7 wherein in step (2) sufficient propylene or propylene plus higher 1-olefin is used to give a concentration thereof in the total feed of from about 90% to about 99% by weight, the remainder of the total olefin feed being ethylene.
References Cited (Backward Citations)
US3389087A
Cited
US3681302A
Cited
US3697429A
Cited
US3676521A
Cited
US3923919A
Cited
US4069162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-07 | 1983-07-09 | 1984-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-07 | 1987-07-09 | 1988-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-07 | 1991-07-09 | 1992-01-08 | $7700.00 | Window Closed / Lapsed |