ADDITIVES FOR OIL COMPOSITIONS

摘要

An additive composition comprises at least one polyoxyalkylene compound and at least one ethylene polymer, wherein the at least one ethylene polymer, in addition to units derived from ethylene, comprises units of the formula (I):
and optionally, units of the formula (II):
wherein each R 1 group independently represents hydrogen or methyl; wherein each R 2 group independently represents an alkyl group having 5 or more carbon atoms; wherein each R 3 group independently represents hydrogen or methyl; wherein each R 4 group independently represents an alkyl group having between 1 and 4 carbon atoms; wherein the proportion of units of formula (I) in the ethylene polymer is between 16 and 30mol%; and wherein the total proportion of units of formula (I) and formula (II) in the ethylene polymer is between 19 and 30mo1%. The composition is particularly suitable for improving the low temperature properties of fuels having sharp distillation tails and low final boiling points.