| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a thiodicarboxylic acid ester of high long-term storage stability with its own anti-oxidizing performance and abrasion-resisting performance kept intact. <P>SOLUTION: A lubricating oil additive composition is provided, comprising (A) a compound represented by general formula (1) (wherein, R<SP POS="POST">1</SP>and R<SP POS="POST">4</SP>are each independently a 6-18C hydrocarbon group; and R<SP POS="POST">2</SP>and R<SP POS="POST">3</SP>are each independently a 1-4C alkylene group) and (B) a compound represented by general formula (2) (wherein, R<SP POS="POST">5</SP>is a 6-18C hydrocarbon group; and R<SP POS="POST">6</SP>and R<SP POS="POST">7</SP>are each independently a 1-4C alkylene group), and having an acid value of 0.01-0.4 mgKOH/g. <P>COPYRIGHT: (C)2013,JPO&INPIT |
