| 摘要 |
PURPOSE:To obtain the novel title composition capable of reducing an amount of fluorocarbon used and usable as a substitute fluorocarbon by combining 1,1,2-trichloro-1,2,2-trifluoroethane with chlorobromomethane, etc., and 2- bromopropane. CONSTITUTION:The fluorinated hydrocarbon based azeotropic composition obtained by combining 1,1,2-trichloro-1,2,2-trifluoroethane (R113) with either one compound of chlorobromomethane, cis-1,2dichloroethylene, tert. butyl chloride and cyclopentane and 2bromopropane. The composition exhibits azeotropic composition, especially when the composition consists of about 76wt.% R113, about 7wt.% 2-bromopropane and about 17wt.% cyclopentane. The composition can reduce an amount of fluorocarbon used and can be used as a substitute for fluorocarbon while satisfying excellent characteristics which the fluorocarbon has. |
