| 摘要 |
PURPOSE:To obtain a fluorinated hydrocarbon-based azeotropic and pseudoazeptropic composition, consisting of the subject compound and specific dichloropentafluoropropane and dibromopropane, usable as a substitute fluorocarbon and simultaneously having excellent characteristics as a solvent, etc. CONSTITUTION:The above-mentioned composition, obtained by blending (A) 5-58wt.%, preferably 15-45wt.% 1-chloro-2,2,3,3-tetrafluoropropane with (B) 7-66wt.%, preferably 37-57wt.% 1,3-dichloro-1,1,2,2,3-pentafluoropropane and (C) 5-54wt.%, preferably 10-42wt.% 2-bromopropane as essential components [the azeotropic composition is especially 21wt.% component (A), 42wt.% component (B) and 37wt.% component (C)], having characteristics equal to or better than those of conventional fluorocarbons, usable for various applications, such as heating medium or foaming agent, in the same manner as that of conventional fluorocarbons and simultaneously capable of the same usage as that of the conventional single fluorocarbon with hardly any fluctuation of composition in recycling due to the presence of the azeotropic point. |
