US4049565A
Expired / Lapsed
US
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Substituted maleimide lubricant additives and lubricant compositions made therewith
Assignee: Mobil Oil AS
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Filing: 1975-10-31
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Granted: 1977-09-20
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Expires: 1995-10-31
Abstract
Abstract Additives that are useful dispersants when placed in lubricants are prepared by (1) reacting an amine or a hydroxy amino compound, such as an amino alcohol, with a halomaleic anhydride and (2) reacting this product with an alkali or alkaline earth metal derivative of a substituted hydroxyaromatic compound.
Inventors
- 👤 John C. Nnadi
- 👤 Phillip S. Landis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:16
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/44; C07D207/444; C07D207/456; C08; C08F; C08F8/00; C08F8/30; C10; C10M; C10M159/00; C10M159/12; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/086; C10M2215/10; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/024; C10M2217/028; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
69 words
A compound of the formula: ##STR14## wherein Q is hydrogen or R-AR-O wherein Ar is selected from the group consisting of phenyl, naphthyl, resorcinyl and anthryl, R is a polyalkylene group having a number average molecular weight of from 500 to 3000, only one Q being hydrogen, R' is hydrogen, alkyl, alkylene, aminoalkylene hydroxyalkyl, hydroxyalkylene, aryl, ##STR15## or alkyl-substituted aryl, q is 1 or 2 and M is oxygen.
Claim 2
Dependent Claim
69 words
A compound of the formula: ##STR14## wherein Q is hydrogen or R-AR-O wherein Ar is selected from the group consisting of phenyl, naphthyl, resorcinyl and anthryl, R is a polyalkylene group having a number average molecular weight of from 500 to 3000, only one Q being hydrogen, R' is hydrogen, alkyl, alkylene, aminoalkylene hydroxyalkyl, hydroxyalkylene, aryl, ##STR15## or alkyl-substituted aryl, q is 1 or 2 and M is oxygen.
Claim 3
Dependent Claim
22 words
The compound of claim 1, wherein R is polybutenyl having a number average molecular weight of about 2000 and Ar is phenyl.
Claim 4
Dependent Claim
29 words
The compound of claim 2 wherein q is 1, M is oxygen, both of Q are R-Ar-O- and R' is --CH 2 CH 2 C 6 H 5 .
Claim 5
Dependent Claim
21 words
The compound of claim 2 wherein q is 1, M is oxygen, both of Q are R-Ar-O- and R' is ##STR16##
Claim 6
Dependent Claim
25 words
The compound of claim 2 wherein q is 1, M is oxygen, both of Q are R-Ar-O- and R' is --CH 2 CH 2 OH.
Claim 7
Dependent Claim
29 words
The compound of claim 2 wherein q is 1, M is oxygen, one of Q is R-Ar-O- and R' is --CH 2 CH 2 C 6 H 5 .
Claim 8
Dependent Claim
25 words
The compound of claim 2 wherein q is 1, M is oxygen, both of Q are R-Ar-O- and R' is --C(CH 2 OH) 3 .
Claim 9
Dependent Claim
21 words
The compound of claim 2 wherein q is 1, M is oxygen, both of Q are R-Ar-O- and R' is ##STR17##
Claim 10
Dependent Claim
24 words
The compound of claim 2 wherein q is 2, M is oxygen, one Q is R-Ar-O- and R' is --CH 2 CH 2 --.
Claim 11
Dependent Claim
91 words
A lubricant composition comprising a major proportion of an oil of lubricating viscosity or a grease thereof and a detergency amount of a compound of the formula: ##STR18## wherein Q is hydrogen or R-Ar-O wherein Ar is selected from the group consisting of phenyl, naphthyl, resorcinyl and anthryl, R is a polyalkylene group having a number average molecular weight of from 500 to 3000, only one Q being hydrogen, R' is hydrogen, alkyl, alkylene, aminoalkylene hydroxyalkyl, hydroxyalkylene, aryl, ##STR19## or alkyl-substituted aryl, q is 1 or 2 and M is oxygen.
Claim 12
Dependent Claim
91 words
A lubricant composition comprising a major proportion of an oil of lubricating viscosity or a grease thereof and a detergency amount of a compound of the formula: ##STR18## wherein Q is hydrogen or R-Ar-O wherein Ar is selected from the group consisting of phenyl, naphthyl, resorcinyl and anthryl, R is a polyalkylene group having a number average molecular weight of from 500 to 3000, only one Q being hydrogen, R' is hydrogen, alkyl, alkylene, aminoalkylene hydroxyalkyl, hydroxyalkylene, aryl, ##STR19## or alkyl-substituted aryl, q is 1 or 2 and M is oxygen.
Claim 13
Dependent Claim
20 words
The composition of claim 10 wherein R has a number average molecular weight of about 2000 and Ar is phenyl.
Claim 14
Dependent Claim
29 words
The composition of claim 11 wherein q is 1, M is oxygen, both of Q are R-Ar-O- and R' is --CH 2 CH 2 C 6 H 5 .
Claim 15
Dependent Claim
21 words
The composition of claim 11 wherein q is 1, M is oxygen, both of Q are R-Ar-O- and R' is ##STR20##
Claim 16
Dependent Claim
25 words
The composition of claim 11 wherein q is 1, M is oxygen, both of Q are R-Ar-O- and R' is --CH 2 CH 2 OH.
Claim 17
Dependent Claim
28 words
The composition of claim 11 wherein q is 1, M is oxygen, one Q is R-Ar-O- and R' is --CH 2 CH 2 C 6 H 5 .
Claim 18
Dependent Claim
25 words
The composition of claim 11 wherein q is 1, M is oxygen, both of Q are R-Ar-O- and R' is --C(CH 2 OH) 3 .
Claim 19
Dependent Claim
21 words
The composition of claim 11 wherein q is 1, M is oxygen, both of Q are R-Ar-O- and R is ##STR21##
Claim 20
Dependent Claim
24 words
The composition of claim 11 wherein q is 2, M is oxygen, one Q is R-Ar-O- and R' is --CH 2 CH 2 --.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |