Patent ID: 8618342
Filing Date: 2013-12-31
Classification: C07C,Y02P

Abstract:
1. A process for the production of a mixture of aromatic compounds belonging to the family of alkylbenzenes in the presence of at least one aromatic feedstock that comprises at least one compound that has a benzene core and at least one olefinic stream that is produced from an ethylene feedstock, whereby said process comprises at least: a) a first oligomerization of said ethylene feedstock that consists of at least one hydrocarbon effluent that comprises a mixture of olefins having a number of carbon atoms that is for the most part between 4 and 30, whereby said mixture of olefins comprises a C10-C24 olefinic fraction that has a mean linearity that is greater than 60%, in the presence of at least one homogeneous catalytic system that contains at least one zirconium-based metal precursor and at least one compound of aluminum as an activator wherein said compound of aluminum is selected from a group comprising tris(hydrocarbyl)aluminums, hydrocarbylaluminum halides, and aluminoxanes, b) a second oligomerization of the effluent that is obtained from a) that consists of at least one hydrocarbon effluent that comprises a mixture of olefins having a number of carbon atoms that is for the most part between 4 and 30, whereby said mixture of olefins comprises a C10-C24 olefinic fraction that has a mean linearity that is less than 50%, in the presence of at least one homogeneous catalytic system that is identical to or different from the one that is used in said stage a), c) at least one fractionation of the effluent that is obtained from said oligomerization b) in such a way as to recover at least one olefin-enriched olefinic stream having a number of carbon atoms that is greater than or equal to 9 and wherein the olefin-enriched olefinic stream is comprised of at least 50% by weight of branched olefins, d) a alkylation of said olefinic stream that is obtained from c) by at least one aromatic feedstock that comprises at least one compound that has a benzene core.