| 摘要 |
Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of (A) a compound of the formula CF3CX=CHRa where X is H or F and Ra is CF3CF2, CF3 or CI, provided that (i) when X is F, Ra is CI, (ii) when Ra is CF3CF2 or CI, the compound of formula CF3CX=CHRa is the E configurational isomer, and (iii) when Ra is CF3, the compound of formula CF3CX=CHRa is the Z configurational isomer; and (B) a compound of the formula CF3Rb where Rb is CH FCH2F or CH=CHCF3, provided that when Rb is CH=CHCF3, X is F and the compound of formula CF3Rb is the Z configurational isomer. Also disclosed are processes for using such azeotropic or azeotrope-like compositions for preparing a thermoplastic or thermoset foam, for producing refrigeration, for producing an aerosol product and for extinguishing and suppressing a fire; and as blowing agents, solvents, heat transfer media and dielectrics. |
