US3864268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-soluble aminated oxidized olefin copolymers
Assignee: BP Corp North America Inc
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Filing: 1972-08-08
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Granted: 1975-02-04
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Expires: 1992-08-08
Abstract
Abstract Lubricant additives exhibiting dispersant and viscosity-index (V.I.) improving properties are obtained by the amination of oxidized high molecular weight amorphous copolymers of essentially ethylene and propylene having a number average molecular weight of from about 1,500 to about 200,000 or more, and at least about 150 pendant methyl groups per 1,000 chain carbon atoms, with a primary or secondary aliphatic amine or polyamine, said reactants being employed in the molar ratio of from about 1:2 to about 1:20, respectively; the aminated oxidized copolymers having a number average molecular weight in the range of from about 1,500 to about 20,000 exhibit excellent dispersancy properties, while those having a number average molecular weight of at least about 20,000 exhibit bi-functional dispersancy and V.I. improving properties.
Inventors
- 👤 George S Culbertson
- 👤 Robert E Karll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:04
CPC Classifications
C; C10; C10M; C10M143/00; C10M143/18; C08; C08F; C08F8/00; C08F8/06; C08F8/30; C08F8/32; C08F8/50; C08F2800/00; C08F2800/10; C10M2205/00; C10M2205/02; C10M2205/026; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/02; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
22 words
The oil-soluble product of claim 1, wherein said copolymer comprises essentially ethylene anD from about 30 to about 65 mole percent propylene.
Claim 2
Dependent Claim
71 words
The oil-soluble product of claim 1, wherein said copolymer comprises essentially ethylene, from about 30 to about 65 mole percent propylene, and up to about 10 mole percent of a third olefinic monomer selected from the group having the general formula RCH CH2 wherein R is an aliphatic or cycloaliphatic radical of from 2 to about 20 carbon atoms, and diolefinic monomers having from about 4 to about 25 carbon atoms.
Claim 3
Dependent Claim
14 words
The oil-soluble product of claim 3, in which the third olefinic monomer is 1-decene.
Claim 4
Dependent Claim
14 words
The oil-soluble product of claim 1, in which the aliphatic diamine is hexamethylene diamine.
Claim 5
Dependent Claim
14 words
The oil-soluble product of claim 1, in which the polyalkylene polyamine is tetraethylene pentamine.
Claim 6
Dependent Claim
30 words
A lubricant composition comprising a major proportion of a normally liquid oleaginous lubricant, and from about 0.1 to about 10 percent of the oil-soluble condensation product defined in claim 1.
Claim 7
Dependent Claim
30 words
A lubricant composition comprising a major proportion of a normally liquid oleaginous lubricant, and from about 0.1 to about 10 percent of the oil-soluble condensation product defined in claim 2.
Claim 8
Dependent Claim
30 words
A lubricant composition comprising, a major proportion of a normally liquid oleaginous lubricant, and from about 0.1 to about 10 percent of the oil-soluble condensation product defined in claim 3.
Claim 9
Dependent Claim
29 words
A lubricant composition comprising, a major proportion of a normally liquid oleaginous lubricant, and from about 0.1 to about 10 percent of the oil-soluble condensation defined in claim 4.
Claim 10
Dependent Claim
30 words
A lubricant composition comprising, a major proportion of a normally liquid oleaginous lubricant, and from about 0.1 to about 10 percent of the oil-soluble condensation product defined in claim 6.
Claim 11
Dependent Claim
27 words
An addition agent concentrate for lubricating oils, comprising a lubricating oil containing from about 10 to about 75 percent of the oil-soluble product defined in claim 1.
References Cited (Backward Citations)
US2660563A
Cited
US3153025A
Cited
US3293112A
Cited
US3458597A
Cited
US3513095A
Cited
US3687849A
Cited
US3687905A
Cited
US3769216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |