| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a lubricating oil composition excellent in low friction, sustainment of low friction in long-term use, adhesion to cast iron, and stain resistance, especially a lubricating oil effective as a lubricating oil for a slide guide surface. <P>SOLUTION: The lubricating oil composition contains, in a lubricating base oil, (A) 0.01-2 mass% of a phosphorus compound based on the total amount of the composition, (B) 0.05-5 mass% of an aliphatic monoamine based on the total amount of the composition, and (C) 0.001-0.5 mass% of alkanol monoamine represented by general formula (1): A<SP>1</SP>A<SP>2</SP>A<SP>3</SP>N, based on the total amount of the composition. In the formula (1), A<SP>1</SP>, A<SP>2</SP>, and A<SP>3</SP>are each independently either hydrogen atom, a 1-18C alkyl group or alkenyl group, a 6-18C (alkyl)cyclohexyl group, or a 1-16C hydroxyalkyl group, and at least one of the A<SP>1</SP>, A<SP>2</SP>, and A<SP>3</SP>is a 1-18C alkyl group or alkenyl group. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
