Process for the preparation of alkylarylsulfonates by modified olefin dimerized.

Process for the preparation of alkylarylsulfonates by a) reaction of a mixture of olefins having 4 carbon atoms in a metathesis catalyst to obtain an olefin mixture comprising 2-pentene and / or 3-hexene, and optionally separation 2-pentene and / or 3-hexene, b) dimerization of 2-pentene and / or 3-hexene obtained in stage a) in the presence of a dimerization catalyst to give a mixture containing olefins with 10 to 12 carbon atoms carbon separation of olefins with 10 to 12 carbon atoms, and separation of 5 to 30% by weight, based on the olefins separated with 10 to 12 carbon atoms, in components of low boiling olefins with 10 to 12 carbon atoms, c) reaction of olefin mixtures with 10 to 12 carbon atoms obtained in step b) with an aromatic hydrocarbon in the presence of an alkylation catalyst to form alkylaromatic compounds could be added before 's reaction ng additionally 0 even 60% by weight, preferably 0 to 40% by weight, based on olefin mixtures with 10 to 12 carbon atoms, obtained in step b), of linear olefins, d) sulfonation of compounds alkylaromatics obtained in step c) and neutralized to give alkylarylsulfonates could be added before the sulfonation additionally 0 to 60% by weight, preferably 0 to 50% by weight, based on the alkylaromatic compounds obtained in stage c), linear alkylbenzene, while mixing is not carried out in step c), e) if appropriate mixing the alkylarylsulfonates obtained in stage d) with 0 to 60% by weight, preferably from 0 to 30% weight, based on the alkylarylsulfonates obtained in stage d), linear alkylarylsulfonates, are not performed while mixed in steps c) and d).