2-DECALYL-2-CYCLOHEXYL DERIVATIVES OF PROPANE, PROCESS FOR THEIR PREPARATION, AND THEIR USE

摘要

The invention provides a method for the preparation of a fluid for traction drive by Friedel-Crafts reaction of naphthalene or tetrahydronaphthalene with an alkenylaromatic compound and the like followed by catalytic hydrogenation. In place of the conventional nickel catalyst, the hydrogenation reaction in the inventive method is performed by use of a catalyst of a platinum group metal selected from the class consisting ruthenium, platinum, rhodium and iridium to give an advantage that the product oil according to the inventive method has a remarkably increased traction coefficient and a small temperature dependence thereof in comparison with conventional products.