| 摘要 |
PURPOSE:To provide a composition which substitutes for the conventional 1,1,2- trichlorotrifluoroethane/alcohol mixed solvents and has the same characteristics as the mixed solvents so that it can be used in the same way without the necessi ty for significant modification of the conventional technique. CONSTITUTION:The objective mixed composition comprises 50-99wt.% at least one component selected from the group of 3,3-dichloro-1,1,1,2,2- pentafluoropropane and 1,3-dichloro-1,1,2,2,3-pentafluoropropane, 0.5-49.5wt.% 2,2-dichloro-1,1,1-trifluoro-ethane, and 0.5-49.5wt.% at least one alcohol selected from the group of methanol, ethanol and 2-propanol. |
