US4048080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil composition
Assignee: Texaco Inc
•
Filing: 1976-06-07
•
Granted: 1977-09-13
•
Expires: 1996-06-07
Abstract
Abstract A lubricating oil composition containing an amine-alkenylsuccinic acid or anhydride reaction product in which the alkenyl radical has a molecular weight ranging from about 250 to 3000.
Inventors
- 👤 Gary D. Lee
- 👤 Paul F. Vartanian
- 👤 Joseph B. Biasotti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:37
CPC Classifications
C; C10; C10M; C10M133/00; C10M133/52; C10M133/56; C07; C07C; C07C57/00; C07C57/02; C07C57/13; C08; C08F; C08F8/00; C08F8/30; C08F8/32; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/234; C10L1/238; C10L1/2383; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/06; C10M2203/10; C10M2205/00; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/06; C10M2215/064; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/12; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2217/00; 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: 16
Claim 1
Independent Claim
179 words
A lubricating oil composition comprising a major proportion of a base oil of lubricating viscosity and a minor dispersant amount of a reaction product prepared by the process which comprises reacting an alkenyl succinic acid or anhydride having the structural unit represented by the formula: ##STR2## in which R is an alkenyl radical having a molecular weight ranging from about 250 to 3000 with an amine represented by the formula: R'R"N -- X -- Y in which R' and R" represent hydrogen or a monovalent alkyl, aminoalkyl or hydroxyalkyl radical having from 1 to 8 carbon atoms, X is a divalent hydrocarbon radical having from 2 to 8 carbon atoms and Y is radical selected from the group consisting of hydrogen, amino, hydroxyl and a radical having the formula O(R'"O) x H in which R'" is an alkylene radical having from 2 to 3 carbon atoms and x is an integer from 1 to 5, in the presence of a free radical initiator, the molar proportion of said amine to said succinic acid or anhydride being greater than one.
Claim 2
Dependent Claim
179 words
A lubricating oil composition comprising a major proportion of a base oil of lubricating viscosity and a minor dispersant amount of a reaction product prepared by the process which comprises reacting an alkenyl succinic acid or anhydride having the structural unit represented by the formula: ##STR2## in which R is an alkenyl radical having a molecular weight ranging from about 250 to 3000 with an amine represented by the formula: R'R"N -- X -- Y in which R' and R" represent hydrogen or a monovalent alkyl, aminoalkyl or hydroxyalkyl radical having from 1 to 8 carbon atoms, X is a divalent hydrocarbon radical having from 2 to 8 carbon atoms and Y is radical selected from the group consisting of hydrogen, amino, hydroxyl and a radical having the formula O(R'"O) x H in which R'" is an alkylene radical having from 2 to 3 carbon atoms and x is an integer from 1 to 5, in the presence of a free radical initiator, the molar proportion of said amine to said succinic acid or anhydride being greater than one.
Claim 3
Dependent Claim
31 words
A lubricating oil composition according to claim 1, in which said alkenyl radical is a mono-olefinic radical derived from the polymerization of an olefin having from two to six carbon atoms.
Claim 4
Dependent Claim
28 words
A lubricating oil composition according to claim 1, in which the alkenyl radical in said alkenyl succinic compound has a molecular weight ranging from about 500 to 2,000.
Claim 5
Dependent Claim
28 words
A lubricating oil composition according to claim 1, in which the alkenyl radical in said alkenyl succinic compound has a molecular weight ranging from about 750 to 1,500.
Claim 6
Dependent Claim
19 words
A lubricating oil composition according to claim 1, in which said alkenyl succinic compound is a polyisobutenyl succinic anhydride.
Claim 7
Dependent Claim
17 words
A lubricating oil composition according to claim 1, in which said alkenylsuccinic compound is a polypropenylsuccinic anhydride.
Claim 8
Dependent Claim
29 words
A lubricating oil composition according to claim 1, in which the molar proportion of said amine to said alkenylsuccinic acid or anhydride is at least about 1.5 to 10.
Claim 9
Dependent Claim
29 words
A lubricating oil composition according to claim 1, in which the molar proportion of said amine to said alkenylsuccinic acid or an anhydride is from about 2 to 5.
Claim 10
Dependent Claim
27 words
A lubricating oil composition according to claim 1, in which said free radical initiator is selected from the group consisting of organic peroxides, azo and diazo compounds.
Claim 11
Dependent Claim
30 words
A lubricating oil composition according to claim 1, in which the alkenyl radical in said alkenyl succinic compound is polyisobutenyl having an average molecular weight ranging from 1050 to 1400.
Claim 12
Dependent Claim
14 words
A lubricating oil composition according to claim 1, in which said amine is diethylenetriamine.
Claim 13
Dependent Claim
14 words
A lubricating oil composition according to claim 1, in which said amine is tetraethylenepentamine.
Claim 14
Dependent Claim
25 words
A lubricating oil composition according to claim 1, in which said base oil consists of from about 85 to 95 weight percent of said composition.
Claim 15
Dependent Claim
89 words
A lubricating oil composition comprising a major proportion of a base oil of lubricating viscosity and a minor dispersant amount of a reaction product prepared by the process which comprises reacting an alkenyl succinic acid or anhydride having the structural unit represented by the formula: ##STR3## in which R is an alkenyl radical having a molecular weight ranging from about 250 to 3,000 with ethylenediamine in the presence of a free radical initiator, the molar proportion of said ethylenediamine to said succinic acid or anhydride being greater than one.
Claim 16
Dependent Claim
89 words
A lubricating oil composition comprising a major proportion of a base oil of lubricating viscosity and a minor dispersant amount of a reaction product prepared by the process which comprises reacting an alkenyl succinic acid or anhydride having the structural unit represented by the formula: ##STR3## in which R is an alkenyl radical having a molecular weight ranging from about 250 to 3,000 with ethylenediamine in the presence of a free radical initiator, the molar proportion of said ethylenediamine to said succinic acid or anhydride being greater than one.
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) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |