| 摘要 |
PURPOSE:To obtain a fluorinated hydrocarbon based azeotropic mixture consisting of R244ca, R113 and 1-chloropropane, having high cleaning power, useful as a cleaning solvent, etc., and usable as a substitute for chlorofluorocarbon(CFC). CONSTITUTION:The mixture obtained by blending (A) 1-chloro-2,2,3,3- tetrafluoropropane (R225ca), (B) 1,1,2-trichloro-1,2,2-trifluoroethane (R113) and (C) 1-chloropropane at the ratio of azeotropic composition of 9-36wt.%, 9-84wt.% component A and 2-60wt.% component B, preferably 31-41wt.% component A, 14-24wt.% component B and 40-50wt.% component C, especially 36wt.% component A, 19wt.% component B and 45wt.% component C. The above- mentioned mixture is made can reduce an amount of conventional fluorocarbons while satisfying excellent characteristics which the above-mentioned fluorocarbons have and simultaneously can be used in the same manner as that of the conventional single fluorocarbon without change of composition during recycle because of the presence of azeotropic point. |
