| 摘要 |
PURPOSE:Titled composition which is highly viscous and stable to a flon solvent, and which is useful for use in cooling compressors for car air conditioners, including a synthetic lubricating oil base oil, a tris(alkylphenyl) phosphate and a benzotrizole derivative. CONSTITUTION:Titled composition is obtained by mixing (a) at least one synthetic lubricating oil base oil selected from the group consisting of a polyalkylene glycol, polyisobutene and an alpha-olefin, with (b) 0.2-0.5wt%, based on the base oil, of a tris(alkylphenyl) phosphate and 0.02-1wt%, based on the base oil, of a benzotriazole derivative represented by formula I, wherein R and R' are both alkyls or one of them is an H atom, such as a compound represented by formula II. |
