Patent US3879304A successfully refreshed from Google Patents.
US3879304A
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Graft polymers and lubricant compositions thereof
Assignee: Texaco Inc
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Filing: 1973-04-18
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Granted: 1975-04-22
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Expires: 1993-04-18
Abstract
Abstract A graft polymer and lubricating oil compositions thereof, said polymer functioning as a multipurpose lube oil additive having viscosity index improving properties, pour depressing properties and detergent-dispersant properties, said graft polymer comprising an oil soluble substantially linear hydrocarbon terpolymer backbone having grafted thereon polymethacrylate polymers, said terpolymer backbone composed of ethylene, terminally unsaturated straight chain alkene of 3 to 12 carbons and terminally unsaturated non conjugated diolefin of 5 to 8 carbons, said polymethacrylate graft being composed of monomer member(s) selected from the group consisting of (1). N,Ndialkylaminoalkyl methacrylate, (2). a mixture of C10-C15 alkyl methacrylate and C16-C20 alkyl methacrylate and (3). a mixture of 1 and 2.
Inventors
- 👤 James O Waldbillig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:33
CPC Classifications
C; C10; C10M; C10M149/00; C10M149/02; C10M149/04; C08; C08F; C08F255/00; C08F255/02; C08F255/06; C08L; C08L51/00; C08L51/06; C10M145/00; C10M145/02; C10M145/10; C10M145/12; C10M145/14; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/026; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2219/00; C10M2219/02; C10M2219/04; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2225/00; C10M2225/04; C10M2225/041; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2010/00; C10N2010/04; C10N2020/00; C10N2020/01
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
129 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL AND BETWEE ABOUT 0.1 AND 50 WT. % OF AGRAFT POLYMER CONSISTING OF A LINEAR TERPOLMER BACKBONE COMPONENT OF BETWEEN ABOUT 15 AND 75 WT. % ETHYLENE, BE TWEEN ABOUT 25 AND 85 WT. % TERMINALLY UNSATURATED ALKENE OF 3 TO 10 CARBONS AND BETWEEN ABOUT 0.1. AND 15 WT. % TERMINALLY UNSATURATED NON CONJUGATED ALKADIENE HOF FROM 5 TO 8 CARBONS HAVING GRAFTS THEERON OF A POOLMETHACRYLATE COMPOSED OF MONOMER SELECTED FROM THE GROUP CONSISTING OF(1). AMIXTURE OF A FIRST ALKYL METHACRYLATE OF 14 TO 19 CARBONS IN A R ASECOND ALKYL METHACRYLATE OF 20 TO 24 CARBONS IN A RESPECTIVE WEIGHT RATIO OF BETWEEN ABOUT 10:1 AND 1:10, (2). DIALKYLAMINOALKYLL METHACRYLATE CHARACTERIZED BY THE FORMULA:
Claim 2
Dependent Claim
129 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL AND BETWEE ABOUT 0.1 AND 50 WT. % OF AGRAFT POLYMER CONSISTING OF A LINEAR TERPOLMER BACKBONE COMPONENT OF BETWEEN ABOUT 15 AND 75 WT. % ETHYLENE, BE TWEEN ABOUT 25 AND 85 WT. % TERMINALLY UNSATURATED ALKENE OF 3 TO 10 CARBONS AND BETWEEN ABOUT 0.1. AND 15 WT. % TERMINALLY UNSATURATED NON CONJUGATED ALKADIENE HOF FROM 5 TO 8 CARBONS HAVING GRAFTS THEERON OF A POOLMETHACRYLATE COMPOSED OF MONOMER SELECTED FROM THE GROUP CONSISTING OF(1). AMIXTURE OF A FIRST ALKYL METHACRYLATE OF 14 TO 19 CARBONS IN A R ASECOND ALKYL METHACRYLATE OF 20 TO 24 CARBONS IN A RESPECTIVE WEIGHT RATIO OF BETWEEN ABOUT 10:1 AND 1:10, (2). DIALKYLAMINOALKYLL METHACRYLATE CHARACTERIZED BY THE FORMULA:
Claim 3
Dependent Claim
130 words
A lubricating oil composition comprising a major amount of mineral lubricating oil and between about 0.1 and 50 wt. % of a graft polymer consisting of a linear terpolymer backbone component of between about 15 and 75 wt. % ethylene, between about 25 and 85 wt. % terminally unsaturated alkene of 3 to 10 carbons and between about 0.10 and 15 wt. % terminally unsaturated non conjugated alkadiene of from 5 to 8 carbons having grafts thereon of a polymethacrylate composed of monomer selected from the group consisting of (1). a mixture of a first alkyl methacrylate of 14 to 19 carbons and a second alkyl methacrylate of 20 to 24 carbons in a respective weight ratio of between about 10:1 and 1:10, (2). dialkylaminoalkyl methacrylate chracterized by the formula:
Claim 4
Dependent Claim
130 words
A lubricating oil composition comprising a major amount of mineral lubricating oil and between about 0.1 and 50 wt. % of a graft polymer consisting of a linear terpolymer backbone component of between about 15 and 75 wt. % ethylene, between about 25 and 85 wt. % terminally unsaturated alkene of 3 to 10 carbons and between about 0.10 and 15 wt. % terminally unsaturated non conjugated alkadiene of from 5 to 8 carbons having grafts thereon of a polymethacrylate composed of monomer selected from the group consisting of (1). a mixture of a first alkyl methacrylate of 14 to 19 carbons and a second alkyl methacrylate of 20 to 24 carbons in a respective weight ratio of between about 10:1 and 1:10, (2). dialkylaminoalkyl methacrylate chracterized by the formula:
Claim 5
Dependent Claim
26 words
A lubricating oil composition in accordance with claim 1 wherein said graft polymer is present in an amount of between about 0.1 and 10 wt. %.
Claim 6
Dependent Claim
46 words
A lubricating oil composition in accordance with claim 1 wherein said alkene is propylene, said alkadiene is 1,4-hexadiene and said polymethacrylate is a copolymer of a first alkyl methacrylate of frOm 16 to 19 carbons and a second alkyl acrylate of from 20 to 22 carbons.
Claim 7
Dependent Claim
24 words
A lubricating oil composition in accordance with claim 1 wherein said alkene is propylene, said alkadiene is 1,4-hexadiene and said monomer is N,N-dimethylaminoethyl methacrylate.
References Cited (Backward Citations)
US2901458A
Cited
US3687849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |