| 摘要 |
PROBLEM TO BE SOLVED: To provide an additive capable of preventing a lubricating oil from being deteriorated by soot particles which are formed in an internal combustion engine during combustion. SOLUTION: A release additive composition comprises at least one dispersant viscosity index improver existing in a form selected from a solid and a semisolid. COPYRIGHT: (C)2007,JPO&INPIT |
