Patent ID: 7060852

Claim:
A process for the preparation of alkylarylsulfonates, comprising: a) reacting a C 4 -olefin mixture over a metathesis catalyst for the preparation of an olefin composition comprising 2-pentene, 3-hexene or mixtures thereof, and optional removal of 2-pentene, 3 hexene, or mixtures thereof, b) dimerizing the 2-pentene, 3-hexene or mixtures thereof obtained in stage a) over a dimerization catalyst to give a mixture containing C 10-12 -olefins, and optional removal of the C 10-12 -olefins, c) reacting the mixture containing C 10-12 -olefins or optionally a separated C 10-12 fraction, with an aromatic hydrocarbon in the presence of an alkylating catalyst to form alkylaromatic compounds, d) sulfonating the alkylaromatic compounds obtained in stage c), and neutralizing the resultant mixture to give alkylarylsulfonates, and wherein, in the C 10-12 -olefins, the proportion of monosubstitution products is in the range from 40 to 75% by weight, and the proportion of double-branched products is in the range from 5 to 25% by weight.