Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of Z-1,1,1,4,4,4-hexafluoro-2-butene with methyl formate, pentane, 2-methylbutane, 1,1,1,3,3-pentafluorobutane, trans-1,2-dichloroethylene, 1,1,1,3,3-pentafluoropropane, dimethoxymethane,...http://www.google.fr/patents/US7972524?utm_source=gb-gplus-shareBrevet US7972524 - Azeotropic and azeotrope-like compositions of Z-1,1,1,4,4,4-hexafluoro-2-butene
Azeotropic and azeotrope-like compositions of Z-1,1,1,4,4,4-hexafluoro-2-butene