Curing of Vinylidene Fluoride Based Fluoroelastomers

Synthesis and copolymerization of vinylidene fluoride (VDF) with Trifluorovinyl Monomers, 11

“…The formation of the methyl radical from the tert ‐butoxyl radical has been observed from 120 °C,3,48,55–57 but is not obvious at 75 °C, since, to our knowledge, it has not been quoted in the literature. However, the presence of these different kinds of radicals produced in the course of the reaction may ensure good efficiency of the telomerization, as observed in previous work 58.…”

Radical telomerization of 1,3-butadiene with perfluoroalkyl iodides

“…For that, the microstructure studied by 1 H NMR spectroscopy allows us to assess the amount of direct initiation of the radical generated from the initiator toward the monomer (as presented in Scheme 1). The presence of methyl groups in the non-fluorinated oligomers is not surprising since at this temperature (145 8C), tert-butoxy radicals (A in Scheme 1) are known to undergo thermal rearrangement leading to methyl radicals (B in Scheme 1) [23][24][25] .…”

Novel tin‐coupled star‐shaped medium vinyl butadiene rubber. I. Arm number and its effect on properties

“…Nucleophiles (such as amines, phenols, and thiolene) are well‐known effective reagent to introduce functional groups into fluoropolymers main chains. The best‐known example is the crosslinking of poly(vinylidene fluoride‐ co ‐hexafluoropropylene) P(VDF‐ co ‐HFP) elastomer with bisnucleophiles (such as diamines,14–20 bisphenols,17, 21–26 and thiolene systems21, 27). In these reactions, nucleophiles play dual‐roles including catalyst of the dehydrofluorination of fluoropolymer as well as reagent of the followed Michael addition.…”