| 摘要 |
PURPOSE:To obtain the subject solvent composition, composition of any one of R225ca, R225cb and R244ca and hexafluoro-2-propanol, capable of satisfying excellent characteristic of conventional fluorocarbons and usable as a substitute fluorocarbon. CONSTITUTION:A solvent composition composed of 60-99wt.%, preferably 70-90wt.% any one of 1,1-dichloro-2,2,3,3,3-pentafluoropropane (R225ca), 1,3- dichloro-1,2,2,3,3-pentafluoropropane (R225cb) and 1-chloro-2,2,3,3- tetrafluoropropane (R244ca) and 1-40wt.%, preferably 10-30wt.% 1,1,1,3,3,3- hexafluoro-2-propanol. The aforementioned composition can be provided with the same usage as that of conventional fluorocarbons without requiring a remarkable change in conventional techniques. |
