An Environmentally Friendly Class of Fluoropolyether: alpha,omega-Dialkoxyfluoropolyethers.

Author(s): WU M., NAVARRINI W., SPATARO G., VENTURINI F., SANSOTERA M.

Source: Applied Sciences.

Volume: 2 (2) Pages: 351-367.

DOI: 10.3390/app2020351. Published: Apr. (2012).

ABSTRACT:

The alpha,omega-dialkoxyfluoropolyethers (DA-FPEs) characterized by the structure R_HO(CF₂CF₂O)_n(CF₂O)_mR_H have been developed as a new class of environmentally friendly hydrofluoroethers (HFEs) suitable as solvents, long-term refrigerants, cleaning fluids, and heat transfer fluids. Synthetic methodologies for DA-FPEs described here consist of radical-initiated oxypolymerization of olefin, peroxy-elimination reaction in peroxidic perfluoropolyethers (P-PFPEs) and further chemical modification of alpha,omega-diacylfluoride PFPE. The physical properties of selected alpha,omega-dimethoxyfluoropolyethers (DM-FPEs) have been evaluated and compared with analogous hydrofluoropolyethers (HFPEs) having -OCF₂H as end-groups. Atmospheric implications and global warming potentials (GWPs) of selected DA-FPEs are also considered.

http://www.mdpi.com/2076-3417/2/2/351

Author(s): WU M., NAVARRINI W., SPATARO G., VENTURINI F., SANSOTERA M.

Source: Applied Sciences.

Volume: 2 (2) Pages: 351-367.

DOI: 10.3390/app2020351. Published: Apr. (2012).

ABSTRACT:

The alpha,omega-dialkoxyfluoropolyethers (DA-FPEs) characterized by the structure R_HO(CF₂CF₂O)_n(CF₂O)_mR_H have been developed as a new class of environmentally friendly hydrofluoroethers (HFEs) suitable as solvents, long-term refrigerants, cleaning fluids, and heat transfer fluids. Synthetic methodologies for DA-FPEs described here consist of radical-initiated oxypolymerization of olefin, peroxy-elimination reaction in peroxidic perfluoropolyethers (P-PFPEs) and further chemical modification of alpha,omega-diacylfluoride PFPE. The physical properties of selected alpha,omega-dimethoxyfluoropolyethers (DM-FPEs) have been evaluated and compared with analogous hydrofluoropolyethers (HFPEs) having -OCF₂H as end-groups. Atmospheric implications and global warming potentials (GWPs) of selected DA-FPEs are also considered.

http://www.mdpi.com/2076-3417/2/2/351