| 摘要 |
PURPOSE:To obtain a useful hydrofluorocarbon-based solvent composition for removing stuck water without fear of depletion of ozone layer by making both of a specific fluorine-containing surfactant and a specific nitrogen-containing surfactant with decafluoropentane. CONSTITUTION:The solvent composition for removing stuck water is obtained by mixing both the surfactant selected from a group (a) and the surfactant selected from a group (b) with decafluoropentane. The group (a) is a polyoxyethylene-polyoxypropylene fluoroalkyl ether type surfactant expressed by formula I and a N-polyoxyethylene-N-alkyl fluoroalkylsulfoamide type surfactant expressed by formula II. The group (b) is a polyoxyethylenealkylamine type surfactant expressed by formula III, a polyoxyethylenealkyldiamine type surfactant expressed by formula IV and an alkylimidazoline type surfactant expressed by formula V (where, Rf is a perfluoroalkyl group, R is an alkyl group). |
