Patent ID: 7504548

Claim:
A process for the production of a synthetic gas oil or an additive for gas oil from a gasoline fraction feedstock having a distillation interval of between about 80° and about 120° C. and fractionated from a parent gasoline, wherein alkyl-aromatic compounds are synthesized by alkylation reaction of said gasoline fraction feedstock having a distillation interval between about 80° and about 120° C., said feedstock comprising benzene and/or one or more alkyl-aromatic compounds said alkyl-aromatic compounds being only those having a distillation interval between about 80° and 120° C., said alkylation being conducted with alkylating agents selected based on the number of cycles of the aromatic core and/or the number of alkyl chains that are grafted to the aromatic cycle and/or the length of the alkyl chain or chains and/or the position of the aromatic cycle or cycles on the alkyl chain or chains of said alkyl-aromatic compound or compounds that are finally obtained, such that the cetane number of the synthetic gas oil or the additive for the gas oil is greater than 30, and in which at least one alkyl chain that is grafted to the aromatic cycle comprises between 7 and 20 carbon atoms.