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An Environmentally Friendly Class of Fluoropolyether: α,ω-Dialkoxyfluoropolyethers
Dipartimento di Chimica, Politecnico di Milano,7, via Mancinelli, I-20131 Milano, Italy
Consorzio INSTM, Via G. Giusti 9, I-50121, Firenze, Italy
C.R.S. Solvay Secialty Polymer, viale Lombardia 20, I-20021 Bollate (MI), Italy
* Author to whom correspondence should be addressed.
Received: 21 February 2012; in revised form: 27 March 2012 / Accepted: 27 March 2012 / Published: 11 April 2012
Abstract: The α,ω-dialkoxyfluoropolyethers (DA-FPEs) characterized by the structure RHO(CF2CF2O)n(CF2O)mRH 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 α,ω-diacylfluoride PFPE. The physical properties of selected α,ω-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.
Keywords: α,ω-dimethoxyfluoropolyethers; hydrofluoropolyethers; physical properties
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Wu, M.; Navarrini, W.; Spataro, G.; Venturini, F.; Sansotera, M. An Environmentally Friendly Class of Fluoropolyether: α,ω-Dialkoxyfluoropolyethers. Appl. Sci. 2012, 2, 351-367.
Wu M, Navarrini W, Spataro G, Venturini F, Sansotera M. An Environmentally Friendly Class of Fluoropolyether: α,ω-Dialkoxyfluoropolyethers. Applied Sciences. 2012; 2(2):351-367.
Wu, Menghua; Navarrini, Walter; Spataro, Gianfranco; Venturini, Francesco; Sansotera, Maurizio. 2012. "An Environmentally Friendly Class of Fluoropolyether: α,ω-Dialkoxyfluoropolyethers." Appl. Sci. 2, no. 2: 351-367.