Random and Sequential Radical Cotelomerizations of 3,3,3-Trifluoropropene (H2C=CHCF3) with Vinylidene Fluoride (F2C=CH2)
نویسندگان
چکیده
The synthesis of original co-telomers based on 3,3,3-trifluoropropene (TFP) and vinylidene fluoride (VDF) with a general formula: RF-[CH2-CF2]n-[CH2-CH(CF3)]m-I (where n=1-63, m=2-640, and RF=(CF3)2CF) was achieved by sequential and random cotelomerizations in the presence of RFI. The radical cotelomerizations were initiated by thermal decomposition of different peroxide and persulfate initiators either in bulk, in solution (in the presence of acetonitrile or 1,1,1,3,3-pentafluorobutane as the solvents), and in aqueous process (emulsion). Different adducts were obtained in good yield (50-70 wt%) with a relative
منابع مشابه
Random and Sequential Radical Cotelomerizations of 3,3,3-Trifluoropropene (TFP, H2C=CHCF3) with Vinylidene Fluoride (VDF, F2C=CH2)
The synthesis of original co-telomers based on 3,3,3-trifluoropropene (TFP) and vinylidene fluoride (VDF) with a general formula: RF-[CH2-CF2]n-[CH2-CH(CF3)]m-I (where n=1-63, m=2-640, and RF=(CF3)2CF) was achieved by sequential and random cotelomerizations in the presence of RFI. The radical cotelomerizations were initiated by thermal decomposition of different peroxide and persulfate initiato...
متن کاملFluorinated Surfactants Potentially Non - Bioaccumulable
This minireview updates non-exhaustive recent strategies of synthesis of original fluorosurfactants potentially non-biodegradable. Various strategies have been focused on: (i) the preparation of CF3-X-(CH2)n-SO3Na (with X=O, C6H4O or N(CF3) and n=8-12), (ii) the oligomerization of hexafluoropropylene oxide (HFPO) to further synthesize oligo(HFPO)-CF(CF3)CO-RH (where RH stands for an hydrophilic...
متن کاملComprehensive theoretical studies on the reaction of 1-bromo-3,3,3-trifluoropropene with OH free radicals.
The potential energy surfaces (PES) for the reaction of 1-bromo-3,3,3-trifluoropropene (CF3CHCBrH) with hydroxyl (OH) free radicals is probed theoretically at the CCSD/aug-cc-pVDZ//B3LYP/6-311++G(d,p) level of theory. All the possible stationary and first-order saddle points along the reaction paths were verified by the vibrational analysis. The calculations account for all the product channels...
متن کاملCompeting reaction pathways of 3,3,3-trifluoropropene at rhodium hydrido, silyl and germyl complexes: C-F bond activation versus hydrogermylation.
The reaction of the silyl complex [Rh{Si(OEt)3}(PEt3)3] (1) with 3,3,3-trifluoropropene afforded the rhodium complex [Rh(CH2CHCF3){Si(OEt)3}(PEt3)2] (2) which features a bonded fluorinated olefin. In contrast the rhodium hydrido complex [Rh(H)(PEt3)3] (3) yielded on treatment with 3,3,3-trifluoropropene in the presence of a base the fluorido complex [Rh(F)(PEt3)3] (4) together with 1,1-difluoro...
متن کاملElectromechanical Properties of Poly(vinylidene fluoride- trifluoroethylene) Networks
Random copolymers of 65% vinylidene fluoride and 35% trifluoroethylene were reacted with an organic peroxide, in combination with a free-radical trap, to yield networks of high crosslink density. Crystallization subsequent to the crosslinking yielded ferroelectric materials exhibiting large electrostrictive strains. The magnitude of the electromechanical response increased with an increasing de...
متن کامل