| 摘要 |
PURPOSE:To provide a lubricant composition for two-cycle engine containing a polyol ester, a diester, polybutene, etc., and a specified amount of a dispersant and excellent in biodegradability, seizing-resistance and cleanness without reducing the miscibility with gasoline. CONSTITUTION:The composition contains (A) 30 to 70wt.% (preferably 40 to 60wt.%) polyol ester exhibiting 9 to 15cst dynamic viscosity at 100 deg.C, (B) 30 to 70wt.% (preferably 40 to 50wt.%) diester exhibiting 2 to 5cst kinetic viscosity at 100 deg.C, (C) 1 to 5wt.% (preferably 1.5 to 3.5wt.%) polybutene having 500 to 2500 molecular weight and/or 1 to 5wt.% (preferably 2 to 5wt.%) polymethacrylate having 5000 to 40000 molecular weight and (D) 5 to 25wt.% (preferably 10 to 20wt.%) dispersant, preferably an ashless type one (e.g. a polyamide). |
