Perfluorinated ethylene-propylene polymer

Perfluorinated Ethylene-Propylene Polymer (FEP). Degradation bioineit. 

Perfluorinated ethylene-propylene polymer (FEP) is a copolymer of tetrafluoroethylene (TFE) and hexafluoropropylene (HFP). FEP has similar properties to PTTE, but its lower melting temperature of 275 C allows it to be melt processed. ... 

FEP polymer, 10 220 18 306—307. See also Fluorinated ethylene propylene (FEP) Perfluorinated ethylene-propylene (FEP) copolymers applications of, 18 315—316 chemical properties of, 18 313 dispersion processing of, 18 314 economic aspects of, 18 315 effects of fabrication on properties of, 18 315... 

Perfluorinated polymers, 18 288-353. See also Perfluorinated ethylene-propylene (FEP) copolymers poly tetr afluoroethylene, 18 288—306 tetrafluoroethylene-ethylene copolymers, 18 316-329 tetrafluoroethylene-perfluorodioxole copolymers, 18 339-342 tetrafluoroethylene-perfluorovinyl ether, 18 329-339... 

Gangal SV, Brothers PD. Perfluorinated polymers, perfluorinated ethylene-propylene copolymers. Encyclopedia of polymer science and technology. Online ed. New York John Wiley and Sons 2010. 

Gangal, S. V, Fluorine Compounds, Organic (Polymers), Perfluorinated Ethylene-Propylene Copolymers, in Kirk-Othmer Encyclopedia of Chemical Technology, 4th ed., 11 644-656, John Wiley Sons, New York, 1994. 

Daikin Industries DuPont Fluoroproducts Note PTFE, polytetrafluoroethylene CTFE, chlorotriflua oethylene EFEP, per-fluorinated copolymer of ethylene and propylene ETFE, copolymer of ethylene tetrafluoroethylene PFPE, perfluorinated polyether EClFE, copolymer of ethylene and chlorotrifluoroethylene HIE, ter-polymer of hexafluoropropylene, tetrafluoroethylene, and ethylene MFA, copolymer of perfluoromethyMnylether and tetrafluoroethylene PEA, copolymer of perfluoropropylvinylether and tetrafluoroethylene FEP, fluorinated ethylene-propylene copolymer PVDF, poly(vinylidene fluoride) THV, terpolymer of tetrafluoroethylene, hexafluoroprqjylene, and vinyUdene fluoride PCTFE, poly(chlorotriflua oethylene). 

Ethylene propylene diene monomer rubber (EPDM) Butyl rubber Perfluorinated polymers Low polarity Silicone... 

Further NMR analysis of chain-end groups of PPs produced with similar catalysts provided additional evidence for the prevailingly secondary propylene propagation with this class of catalyst. In fact, it was shown that the main chain-release reaction is /3-H elimination, and that propylene insertion into the Ti-H bond in the initiation step is almost exclusively primary. 1 Moreover, NMR analysis of a co-polymer of propylene with a small amount (< 2 mol%) of l-13C-ethylene, obtained with the perfluorinated catalyst (137), showed that the large majority of ethylene units in the co-polymer was present as two methylene units (see Scheme 40). This clearly indicated that ethylene units bridge blocks of propylene units with opposite regiochemistry, which is consistent with and further supports the whole mechanistic scenario.161... 

Although the previously discussed methods are applicable specifically to polymer substrates, there are also strategies for surface functionalization with polymer brushes that work on a broad range of substrates. A general method that allows producing polymer brushes on silicon, gold, perfluorinated poly(ethylene-co-propylene), and poly (styrene) has been recently introduced [21]. The first step of the modification sequence was not sensitive to the substrate used. An... 

Traditional organic polymers such as poly(vinyl chloride), poly(ethylene), poly(propylene), and poly(styrene) are well-known to decompose completely around 400—500° C however, perfluorinated polymers such as poly(tetrafluoroethylene) (PTFE) decompose at higher temperatures (around 600° C) due to the bondstrengthening effect of fluorine for C—C and C—F bonds in highly fluorinated compounds [1,2, 4-6]. Hybridization of PTFE with silica gels is of particular interest... 

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