1,1-Diphenylethane was synthesized through the condensation of benzene with acetaldehyde using macroporous perfluorosulfonic acid resin as the catalyst. The synthetic, when formulated with benzyl toluene, produced a kind of capacitor oil with physical chemical properties and electric performance comparable to that of SAS-40 made in Japan. 采用大孔全氟磺酸树脂作催化剂,苯与乙醛缩合生成1,1-二苯基乙烷,后者与单苄基甲苯掺配的油的理化电气性能与日本SAS-40油相同。