| 摘要 |
PROBLEM TO BE SOLVED: To provide a lubricant oil simultaneously preventing corrosion of copper and lead in energy saving fuel oil in which organic molybdenum compound is blended. SOLUTION: The lubricating oil composition for an internal combustion engine contains base oil and compounds expressed by formula (1) (in the formula, each of R<SP>1</SP>-R<SP>4</SP>is a 4-22C hydrocarbon group and each of X<SP>1</SP>-X<SP>4</SP>is oxygen or sulfur atom), formula (2) (in the formula, R<SP>5</SP>represents hydrogen or a 1-6C alkyl group, R<SP>6</SP>represents a 1-22C hydrocarbon group which can contain amino group or hydrogen, and n represents number of 1-3), and formula (3): R<SP>7</SP>-N=C=N-R<SP>8</SP>(in the formula, each of R<SP>7</SP>and R<SP>8</SP>is hydrogen or a 1-20C hydrocarbon group). COPYRIGHT: (C)2011,JPO&INPIT |
