| 摘要 |
PURPOSE:To obtain the subject composition extremely reducing accumulation especially to a suction valve of an automobile engine, comprising an organopolysiloxane and an ester as principal components. CONSTITUTION:The objective composition contains (A) an organopolysiloxane expressed by the formula [R'' is 1-18C (halogenated) hydrocarbon; (n)is integer of 0-50] and preferably having <=50mm<2>/S viscosity at 25 deg.C and (B) an ester composed of monoester, diester or polyol ester as principal components. Besides, mixing amounts of the components A and B to the total amount of gasoline are preferably 1-3000ppm the component A and 10-5000ppm the component B. |
