| 摘要 |
PURPOSE:To obtain the subject composition, consisting of 1,1,2- trichlorotrifluoroethane and 2,2-dimethylbutane, usable as a substitute fluorocarbon for various applications, such as heating medium or foaming agent, and especially having excellent characteristics as a solvent. CONSTITUTION:The above-mentioned composition, obtained by blending (A) 70-95wt.%, preferably 75-85wt.% 1,1,2-trichlorotrifluoroethane with (B) 5-30wt.%, preferably 15-25wt.% 2,2-dimethylbutane as essential components [the azeotropic composition is especially about 80wt.% component (A) and about 20wt.% component (B)], capable of reducing the amount thereof used while satisfying excellent characteristics of conventional fluorocarbons and providing the same usage as that of the conventional signal fluorocarbon due to te presence of the azeotropic composition and hardly any fluctuation of composition even in recycling. Since properties of dissolving and removing fluxes, oils, etc., are especially better than those of simple R113, the aforementioned incombustible or flame retardant composition is suitable as a detergent solvent substitute for the R113. |
