| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lubricant composition suitable when a lead-containing metallic material is used in a sliding part. <P>SOLUTION: The lubricant composition is obtained by incorporating, in a lubricant base oil (A): at least one kind of phosphorus compound (B), which is selected from the group comprising the phosphorus compounds shown by general formula (1) and/or general formula (2), metal salts of them, amine salts of them and derivatives of them by 0.01-0.1 mass% in terms of a phosphorus amount; and 0.05-1.0 mass% of an epoxy compound (C). In the general formula (1): X<SP POS="POST">1</SP>, X<SP POS="POST">2</SP>and X<SP POS="POST">3</SP>are each an oxygen atom or a sulfur atom individually on condition that at least one of them is oxygen; R<SP POS="POST">1</SP>, R<SP POS="POST">2</SP>and R<SP POS="POST">3</SP>are each a hydrogen atom or a 1C-30C hydrocarbon group individually. In the general formula (2): X<SP POS="POST">4</SP>, X<SP POS="POST">5</SP>, X<SP POS="POST">6</SP>and X<SP POS="POST">7</SP>are each an oxygen atom or a sulfur atom individually on condition that at least one of them is oxygen and one or two of X<SP POS="POST">4</SP>, X<SP POS="POST">5</SP>and X<SP POS="POST">6</SP>may be single bonds or (poly)oxyalkylene groups; R<SP POS="POST">4</SP>, R<SP POS="POST">5</SP>and R<SP POS="POST">6</SP>are each a hydrogen atom or a 1C-30C hydrocarbon group individually. <P>COPYRIGHT: (C)2013,JPO&INPIT |
