Hydrofluoropolyethers

Physical properties of four α, ω-dimethoxyfluoropolyethers

“…DM-FPEs have been obtained by application of a number of technologies, both original [1,14,20,25] and already established in industrial practice. They include the oxidative polymerization of fluorinated monomers [14,20,25]: …”

“…A new class of hydrofluoropolyethers, the a, v-dimethoxyfluoropolyethers (DM-FPEs), having the copolymeric structure CH 3 O(CF 2 C-F 2 O) n (CF 2 O) m CH 3 (where ''n'' and ''m'' are defined values), has been designed and developed by Solvay-Solexis as potential CFC replacement compounds [1][2][3][4]. They do not contain chlorine, and hence, do not contribute to the catalytic destruction of stratospheric ozone.…”

“…Furthermore, the incorporation of two -OCH 3 groups provides reactive sites for OH radical attack, which limits the atmospheric lifetime and hence their global warming potentials [2,[5][6][7][8]. Some papers and patents concerning the properties and the applications of DM-FPEs have been recently published [1][2][3][4]9].…”

“…Some of the above data have been tentatively correlated with the compounds' structures on the basis of the well known group contribution analysis method. Furthermore, they have been compared with those of two similar homologues, hydrofluoropolyethers containing -OCF 2 H chain ends (HFPEs) [4,10,11] and perfluoropolyethers having -CF 3 chain ends (PFPEs) [12].…”

The comparison of thermal stability of some hydrofluoroethers and hydrofluoropolyethers

“…Some of the physical properties of hydrofluoropolyethers (HFPEs) and of hydrofluoroethers (HFEs) have been reported recently [8][9][10]. These compounds are characterized by properties typical of perfluoropolyethers (PFPEs), in particular, a low vapor pressure, a wide liquid interval, and a low temperature dependence of viscosity [11,12].…”