Experimental vapor-liquid equilibrium data for the binary mixtures propylene-R12, propylene-R22, propylene-R152a, R134a-R142b, propylene-R13, propylene-R142b, propylene-R23, propylene-R134a, propylene-R115, propylene-R13B1, R134a-R152a, R134a-R116, propylene-R114, R134a-R12, propylene-R116 and R134a-propane have been obtained at temperatures between 251 and 298 K and pressures up to 2 MPa. The consistency of the data is shown by a maximum-likelihood method. The data are also correlated by various forms of generalized equations of state. UNIFAC interaction parameters C-a=C,CF2, (CF2)-C-a,C=C, C-a=C,CClF and (CClF)-C-a,C=C have been fitted. A comment on the addition of the CClF-group to the UNIFAC parameter matrix is given.