| 摘要 |
PURPOSE:To provide the subject composition capable of remarkably reducing deposits at the intake valves of engines for automobiles by compounding a specific benzylamine derivative, a polyoxyalkylene glycol (derivative) and a lubricant fraction as main components. CONSTITUTION:The objective composition comprises (A) a benzylamine derivative represented by the formula (R is alkyl derived from a polyolefin polymer having a mol.wt. of 500-4500; R' is alkylene; n is 1-10) and having a mol.wt. of 500-500, preferably 1000-3000, (B) a polyoxyalkylene glycol (derivative) having a mol.wt. of 500-5000. preferably 1000-3000, and (C) a lubricant fraction having a viscosity of 3-35mm<2>/S (100 deg.C) as main components. |
