| http://www.w3.org/ns/prov#value | - A process for alkylating an alkylatable aromatic which comprises reacting said alkylatable aromatic with an olefin in the presence of a catalyst system containing a heavy metal halide selected from the group consisting of the halides of titanium, zirconium, hafnium, molybdenum, antimony and tin, an alkyl halide defined by the formula R CX wherein R is an alkyl radical and X is a halogen and an org
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