| 摘要 |
PURPOSE:To provide the subject composition composed of R244ca, R225ca and 1-chloropropane, having excellent characteristics comparable or superior to those of conventional fluorocarbons and usable as a substitute for fluorocarbon. CONSTITUTION:The objective composition is produced by compounding (A) 1-chloro-2,2,3,3-tetrafluoropropane (R244ca), (B) 1,1-dichloro-2,2,3,3,3- pentafluoropropane (R225ca) and (C) 1-chloropropane at ratios of 3-48wt.% of A, 7-62wt.% of B and 3-56wt.% of C, preferably 6-36wt.% of A, 42-72wt.% of B and 5-46wt.% of C, especially 11wt.% of A, 48wt.% of B and 41wt.% of C (azeotropic composition). Since the composition has azeotropic point, it causes little variation of the composition in recycling and is usable in the same manner as simple fluorocarbon. It has higher dissolving power than conventional R113 when used as a solvent. |
