AZEOTROPIC AND AZEOTROPE-LIKE COMPOSITIONS OF Z-1,1,1,4,4,4-HEXAFLUORO-2-BUTENE, TRANS-1,2-DICHLOROETHYLENE, AND A THIRD COMPONENT

摘要

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, trans-1,2-dichloroethylene and a third component. Also disclosed are compositions where the third component is cyclopentane, methanol, dimethyoxymethane, methyl formate or perfluoro ethyl isopropyl ketone. Also disclosed is a process of preparing a thermoplastic or thermoset foam by using such azeotropic or azeotrope-like compositions as blowing agents. Also disclosed is a process of producing refrigeration by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as solvents. Also disclosed is a process of producing an aerosol product by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as heat transfer media. Also disclosed is a process of extinguishing or suppressing a fire by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as dielectrics.

主权项

1. An azeotropic composition consisting essentially of:
(a) Z-1,1,1,4,4,4-hexafluoro-2-butene; (b) trans-1,2-dichloroethylene; and(c) a third component; wherein the trans-1,2-dichloroethylene and the third component are present in effective amounts to form an azeotropic combination with the Z-1,1,1,4,4,4-hexafluoro-2-butene wherein the third component is:(i) cyclopentane and the composition has a boiling point of about 29 C at a pressure of about 14.7 psia(i) perfluoro ethyl isopropyl ketone and the composition has a boiling point of about 30 C at a pressure of about 14.7 psia; or