PURPOSE: To obtain a mixture which has an energy saving property and enables the use of molds without frequent washing by incorporating release agent acting additives into a solvent dichlorotrifluoroethane.

CONSTITUTION: The objective mixture is obtd. by adding at least one kind of the release agent acting additives and, if appropriate, a solvent assistant into the solvent dichlorotrifluoroethane at a ratio of 0.1 to 80 wt.% of the total mixture. A 1,1-dichlor-2,2,2-trifluoroethane is advantageously used as the dichlorotrifluoroethane described above. The examples of the release agent acting additives to be used include wax, wax deriv., silicones, metal soap, fats, oil, polymers, fluorocarbon, inorg. powder, etc. An unsatd. long chain ester of carboxylic acid of monoalcohol having 34-50C is preferably used as the wax.