Me(2)C(p-C(6)H(4)O(CH(2)CH(2)O)(4)OCOCH=CH(2))(2) was dild. with (PrO)(2)CO, (EtO)(2)CO and 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (I) or 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide) (II) (mass ratio from 20:0:0:80 to 20:30:30:20) and photopolymerized with PhCOPh(OMe)(2) (400 W for 20 min) to solid electrolyte films (thickness 0.019-0.035 cm). The films were studied for elec. cond. The diln. resulted in an increase in the elec. cond. of the films up to 9.1 mS/cm (I) or 11.6 mS/cm (II) (max. at the diln. ratio 20:25:25:30).