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US 8,481,467 B2Granted
Lubricating oil additive and lubricating oil composition
AssigneeNippon Oil Co., Ltd.
InventorsKazuhiro Yagishita, Shouzaburou Konishi
Life of this patent
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Abstract
Lubricating oil compositions have low friction properties and anti-wear properties and are excellent in long drain capability. The lubricating oil compositions are particularly suitable for use as a fuel efficient type lubricating oil for internal combustion engines. The lubricating oil compositions contain a lubricating oil additive comprising one or more compounds selected from a specific nitrogen-containing compound, an acid-modified derivative thereof, and an oil soluble metal complex obtained by mixing the nitrogen-containing compound and/or acid-modified derivative thereof with an organic metal salt and/or organic metal complex.
Claims14
An internal combustion engine comprising a lubricating oil composition comprising a lubricating base oil and a lubricating additive, wherein the lubricating additive comprises (A) one or more compounds selected from the group consisting of the following (A-1) through (A-6) components:
- (A-1) at least one kind of compound selected from the group consisting of nitrogen-containing compounds represented by formula (2) below and acid-modified derivatives thereof:
- wherein R1 is a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms, R2, R4 and R5 are each independently a hydrocarbon or functionalized hydrocarbon group having 1 to 10 carbon atoms or hydrogen, R3 is a hydrogen, X1 is selected from oxygen, nitrogen, and sulfur, X2 is oxygen, m is an integer of 1 or 2, and n is an integer of 0 or 1;
- (A-2) at least one kind of compound selected from the group consisting of acid-modified derivatives of nitrogen-containing compounds represented by formula (3) below:
- wherein R1 is a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms, R2 and R3 are each independently a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms or hydrogen, and X is oxygen or sulfur;
- (A-3) at least one kind of compound selected from the group consisting of nitrogen-containing compounds represented by formula (4) below and acid-modified derivatives thereof:
- wherein R1 is a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms, R2 through R4 are each independently a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms or hydrogen, and X1 and X2 are each independently oxygen or sulfur;
- (A-4) at least one kind of compound selected from the group consisting of nitrogen-containing compounds represented by formula (5) below and acid-modified derivatives thereof:
- wherein R1 is a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms, R2 through R5 are each independently a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms or hydrogen, X1 is oxygen or nitrogen, X2 and X3 are each independently oxygen or sulfur, p is an integer of 0 or 1, m is an integer of 0 or 1, and n is an integer of 1 or greater;
- (A-5) hydrazide derivatives obtained by modifying nitrogen-containing compounds represented by formula (6) below with phosphoric acid or a salt thereof and an organic metal salt and/or an organic metal complex:
- wherein R1 is a hydrocarbon group having 1 to 30 carbon atoms or a functionalized substituent having 1 to 30 carbon atoms and R2 through R4 are each independently a hydrocarbon group having 1 to 30 carbon atoms a functionalized substituent having 1 to 30 carbon atoms or hydrogen;
- and
- (A-6) oil soluble metal complexes obtained by mixing at least one kind of compound selected from the group consisting of Components (A-1) through) (A-5) and nitrogen-containing compounds represented by formula (7) below with an organic metal salt and/or an organic metal complex:
- wherein R1 is a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms, R2, R4 and R5 are each independently a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms or hydrogen, R3 is a hydrogen, X1 is selected from oxygen, nitrogen and sulfur, X2 is oxygen or sulfur, m is an integer of 0 to 2, and n is an integer of 0 or 1.
10 more elements
A lubricating oil additive comprising oil soluble metal complexes which comprise one or more compounds selected from the group consisting of (A-2) nitrogen-containing compounds represented by formula (3) below, and an organic metal salt and/or an organic metal complex:
- wherein R1 is a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms, R2 and R3 are each independently a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms or hydrogen and X is oxygen or sulfur.
A lubricating oil additive comprising (A) one or more compounds selected from the group consisting of the following (A-1) through (A-6) components:
- (A-1) a derivative obtained by modifying nitrogen-containing compounds represented by formula (2) below with boric acid or a salt thereof:
- wherein R1 is a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms, R2 through R5 are each independently a hydrocarbon or functionalized hydrocarbon group having 1 to 10 carbon atoms or hydrogen, X1 is selected from oxygen, nitrogen, and sulfur, X2 is oxygen or sulfur, m is an integer of 1 or 2, and n is an integer of 0 or 1;
- (A-2) a derivative obtained by modifying nitrogen-containing compounds represented by formula (3) below with boric acid or a salt thereof:
- wherein R1 is a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms, R2 and R3 are each independently a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms or hydrogen, and X is oxygen or sulfur;
- (A-3) a derivative obtained by modifying nitrogen-containing compounds represented by formula (4) below with boric acid or a salt thereof:
- wherein R1 is a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms, R2 through R4 are each independently a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms or hydrogen, and X1 and X2 are each independently oxygen or sulfur;
- (A-4) a derivative obtained by modifying nitrogen-containing compounds represented by formula (5) below with boric acid or a salt thereof:
- wherein R1 is a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms, R2 through R5 are each independently a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms or hydrogen, X1 is oxygen or nitrogen, X2 and X3 are each independently oxygen or sulfur, p is an integer of 0 or 1, m is an integer of 0 or 1, and n is an integer of 1 or greater;
- (A-5) a hydrazide derivative obtained by modifying nitrogen-containing compounds represented by formula (6) below with boric acid or a salt thereof:
- wherein R1 is a hydrocarbon group having 1 to 30 carbon atoms or a functionalized substituent having 1 to 30 carbon atoms, R2 through R4 are each independently a hydrocarbon group having 1 to 30 carbon atoms, a functionalized substituent having 1 to 30 carbon atoms, or hydrogen;
- and
- (A-6) oil soluble metal complexes comprising at least one compound selected from the group consisting of Components (A-1) through (A-5) and a derivative obtained by modifying nitrogen-containing compounds represented by formula (7) below with boric acid or a salt thereof, and an organic metal salt and/or an organic metal complex:
- wherein R1 is a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms, R2 through R5 are each independently a hydrocarbon or functionalized hydrocarbon group having 1 to 30 carbon atoms or hydrogen, X1 is selected from oxygen, nitrogen and sulfur, X2 is oxygen or sulfur, m is an integer of 0 to 2, and n is an integer of 0 or 1.
10 more elements
Dependencies are inferred from the claim text.