| 摘要 |
PURPOSE:To obtain the subject composition having excellent properties of conventional fluorocarbon, able to be used as substitute of fluorocarbon and having excellent properties as solvent, etc., by comprising R141 and a species selected from R225ca, R225cb and R244cb. CONSTITUTION:The objective composition is composed of (A) at least a species of fluorinated hydrocarbon selected from A1: 3,3-dichloro-1,1,1,2,2- pentafluoropropane (R225ca), A2: 1,3-dichloro-1,1,2,2,3-pentafluoropropane (R225cb) and A3: 1-chloro-1,2,2,3-tetrafluoropropane (R244cb) and (B) 1,2-dichloro-1- fluoroethane (R141). An azeotropic composition composed of A1=95wt.% and B=5wt.%, A2=89wt.% and B=11wt.% or A3=90wt.% and B=10wt.%, and an azeotropic-like composition composed of A1=75 to 99wt.% and B=1 to 25wt.%, A2=65 to 99wt.% and B=1 to 35wt.% or A3=70 to 99wt.% and B=1 to 30wt.% are claimed. The objective composition is able to be used in the same method as conventional single fluorocarbon without variation of composition in recycling. |
