| 摘要 |
<p>Disclosed is a lubricant composition for internal combustion engines, which contains a base oil, (A) at least one compound selected from disulfide compounds represented by the following general formula (I): R<SUP>1</SUP>OOC-A<SUP>1</SUP>-S-S-A<SUP>2</SUP>-COOR<SUP>2</SUP> (I) and disulfide compounds represented by the following general formula (II): R<SUP>7</SUP>OOC-CR<SUP>9</SUP>R<SUP>10</SUP>-CR<SUP>11</SUP>(COOR<SUP>8</SUP>)-S-S-CR<SUP>16</SUP>(COOR<SUP>13</SUP>)-CR<SUP>14</SUP>R<SUP>15</SUP>-COOR<SUP>12</SUP> (II) , (B) an organic molybdenum compound and (C) a phenol antioxidant and/or an amine antioxidant. This lubricant composition is a low ash, lowphosphorus lubricant composition used for internal combustion engines such as gasoline engines, diesel engines and gas engines, which is improved in oxidation stability and friction reducing effect, while conforming to environmental regulations.</p> |
