Patent ID: 8518129

Claim:
A gasoline composition comprising (i) a base gasoline having an E70 base value and an E100 base value; and (ii) an oxygenate composition comprising component A and at least one component selected from components B, C, D and E, wherein: component A is an alkyl alkenoate compound, or a mixture of alkyl alkenoate compounds, selected from compounds of formula I: wherein R 1 is a linear alkenyl group containing 3 to 5 carbon atoms, optionally substituted by a methyl group, and R 2 is a linear or branched alkyl group containing 1 to 6 carbon atoms, with the proviso that component A has a boiling point or boiling point range within the temperature range of from 90 to 200° C.; component B is ethanol; component C is a compound of formula II or formula III: wherein the R 3 , R 4 , R 5 and R 6 groups are independently selected from hydrogen and C 1-6 hydrocarbyl groups, with the proviso that component C has a boiling point or boiling point range of at most 110° C.; component D is butanol; and component E is an ether of the general formula IV: R 7 —O—C(Me) 3 (IV) wherein R 7 is selected from methyl, ethyl or mixtures thereof; wherein the gasoline composition has an E70 value and an E100 value; wherein the oxygenate composition maintains the E70 value and E100 value of the gasoline composition within 25% of the E70 base value and the E100 base value, respectively.