Outstanding telechelic perfluoropolyalkylethers and applications therefrom

Synthesis of α,β-unsaturated esters of perfluoropolyalkylethers (PFPAEs) based on hexafluoropropylene oxide units for photopolymerization

“…Peruoropolyalkylethers (PFPAEs) are non-toxic uorinated long chains 16 which demonstrate interesting properties in many high technology areas such as aerospace, aeronautic (seals, gaskets) or automotive industries. 17 These PFPAEs based on structural units such as -(CF 2 O)-, -(CF 2 CF 2 O)-, -(CF 2 CF 2 CF 2 O)-and -(CF(CF 3 )CF 2 O)-showed high chemical and thermal inertness, low surface energy and ammability, and excellent ageing and weather resistances. 18 Oligo(hexauoropropylene) (oligo(HFPO)) products obtained by the anionic ring-opening reaction of hexauoropropylene oxide with cesium uoride were used in this work.…”

Fluoropolymers: The Right Material for the Right Applications

“…More recently, a quasi‐exhaustive review focusses on the synthesis and uses of telechelic PFPAEs diol (or α,ω‐dihydroxy) involving various strategies to obtain well‐defined fluorinated (co)polymers. Scheme provides a general overview of such intermediate PFPAE synthons, the resulting materials, and their wide range of high‐tech applications.…”

“… Overview of the uses of telechelic dihydroxyl PFPAEs as precursors for a wide range of intermediates and well‐defined fluoropolymers, including applications …”

“…Monofunctional PFPAEs display av ery high gas solubility making them useful in thin films in the development of cosmeticsa nd barrierc reams that offer av ery high degree of skin protection and moisture retention and still enablet he skin to breathe. More recently,aquasi-exhaustive review [32] focusses on the synthesis and uses of telechelic PFPAEs diol (or a,w-dihydroxy) Scheme3.Synthesis of fluorosiliconesf rom 3,3,3-trifluoropropene. [30] Scheme4.Synthesis of fluoropolyphosphazenes.…”

“…[31] This commercially availablep roduct marketed by the Shin Etsu company under the Sifel tradename is prepared by polyhydrosilylationo ft elechelic PFPAE dienes with telechelicP DMS bis(silane)s. [33] In addition, for processing by molding, such rubbers feature easy Scheme5.Overview of the uses of telechelic dihydroxylPFPAEs as precursors for aw ide range of intermediatesand well-defined fluoropolymers, including applications. [32] handling and simple mold configurations, which are more desirable than liquid injected molding silane compositions which requirecomplex mold configurations.…”