Detergent compositions for gasoline-type fuels containing polytetrahydrofuran

摘要

The compound has very good detergent properties when added to petrols, inhibiting the deposition of polymerized hydrocarbons on engine surfaces such as inlet valves or fuel injectors. The additive composition comprises at least one compound of the general formula (I). R1, R2, R3 and R4 = H or hydrocarbyl, at least one of R1, R2, R3, R4 being hydrocarbyl; n = 1-20; and m and m<1) = 4-60. An Independent claim is also included for petrol compositions containing a detergent additive as above.