| 摘要 |
PROBLEM TO BE SOLVED: To make a lubricating oil to exhibit lubricating oil performances in response to different sliding characteristics required for respective sliding sites. SOLUTION: This additive used for lubricating oils and having a double capsule structure which comprises an outer capsule 1 and inner capsules 2 encapsulated in the outer capsule 1 and is formed so that only the outer capsule 1 is broken, while the second capsules 2 are not broken, at the first sliding site under the first surface pressure, and so that both the outer capsule 1 and the inner capsules 2 are broken under a higher second surface pressure than the first surface pressure is characterized by encapsulating a frictional coefficientμ-lowering agent for exhibiting a frictional coefficientμ-lowering performance and the inner capsules in the outer capsule 1 and encapsulating a frictional coefficientμ-lowering performance-controlling agent for controlling the frictional coefficientμ-lowering performance and a frictional coefficientμ-enhancing agent for exhibiting a frictional coefficientμ-enhancing performance for enhancing the frictional coefficient, in the inner capsules. COPYRIGHT: (C)2006,JPO&NCIPI |
