| 摘要 |
PURPOSE:To readily provide the subject compound, by subjecting diphenylethane and polyethylbenzenes by-produced in a process for producing ethylbenzene from benzene and ethylene to a transalkylation reaction in the presence of a Friedel-Crafts catalyst. CONSTITUTION:1mol of diphenylethane and 1-5mols (expressed in terms of ethyl groups) of polyethylbenzene by-produced in a process for producing ethylbenzene by alkylating benzene with ethylene are subjected to a transalkylation reaction in the presence of a Friedel-Crafts catalyst such as AlCl3 at 0-150 deg.C preferably for 0.5-6hr. After the reaction finishes, the Friedel-Crafts catalyst is removed from the reaction product and a distrillation fraction containing 1-phenyl-1-ethylphenylethane, etc., is subsequently separated by distillation to provide the objective compound which is useful as a thermal medium, solvent for pressure-sensitive copying paper, insulating oil, lubricating oil for hydraulic fluids, etc. The by-produced ethylbenzene is useful as a raw material for the production of styrene. |
