Results 111 to 120 of about 648 (164)

Electrocatalytic Dehydrofluorination of Poly(vinylidene fluoride)

Chemistry Letters, 1995
Abstract Poly(vinylidene fluoride) was dehydrofluorinated by cathodic electrolysis in DMF in the presence of t-BuOH as a mediator under the anaerobic conditions, giving poly(fluoroacetylene) with a carbyne moiety. Electrical conductivity of the product was 3.9 × 10−3 S cm−1 upon I2 doping.
Masashi Kijima, Tsuyoshi Toyabe, Hideki Shirakawa   +2 more
openaire   +1 more source

An efficient dehydrofluorinating system for polyvinylidene fluoride

Bulletin of the Russian Academy of Sciences Division of Chemical Science, 1992
Chemical dehydrohalogenation of halogen-containing polymers is an accessible and convenient method for preparation of carbon-chain polymers with a system of conjugated multiple bonds in the main chain, including carbyne [1]. The development of an efficient method of preparation of carbyne and articles made of it is still an urgent problem.
Yu. P. Kudryavtsev, S. E. Evsyukov, V. G. Babaev   +2 more
openaire   +1 more source

ChemInform Abstract: DEHYDROFLUORINATION OF FLUOROSULFONYL‐3,3,3‐TRIFLUOROPROPIONATES

Chemischer Informationsdienst, 1983
AbstractBehandeln der Trifluorpropionylester (Ia) bzw. (Ib) mit BF3′NEt3 und gleichzeitiges Destillieren des Reaktionsgemisches liefert ein ca. hl‐Gemisch aus den Acrylaten (IIa) bzw.′ (IIb) und den jeweiligen Ausgangsverbindungen (Ia) bzw. (Ib).
A. F. BENDA, N. V. VASIL'EV, A. F. ELEEV, G. A. SOKOL'SKII   +3 more
openaire   +1 more source

Moderate dehydrofluorinated PVDF with high energy density

Materials Letters, 2018
Abstract Moderate dehydrofluorinated PVDF (MD PVDF) composed of polyene and untreated PVDF was produced by elimination reaction in polyvinyl pyrrolidone (PVP) and KOH aqueous solution. Dielectric films of MD PVDF were fabricated by solution casting method to study the energy density performance of the polymer.
Peng Qu, Xiaolin Liu, Sijing Wang, Chen Xiao, Shanshan Liu   +4 more
openaire   +1 more source

ChemInform Abstract: Dehydrofluorination of 1‐H‐Polyfluoroalkanesulfonyl Fluorides.

ChemInform, 1987
AbstractThe title compounds (I) and (III) easily undergo dehydrofluorination by BF3·NEt3 complex to give polyfluoroalkenylsulfonyl fluorides.
A. F. BENDA, A. F. ELEEV, A. F. ERMOLOV, G. A. SOKOL'SKII   +3 more
openaire   +1 more source

Piezo- and pyroelectric properties of dehydrofluorinated PVDF films

Proceedings of 8th International Symposium on Electrets (ISE 8), 2002
PVDF was effectively dehydrofluorinated by the reaction with hot alkali-DMSO solution. PVDF degrades to products containing c=c, c=c, and c=0 groups as revealed by the corresponding bands in the IR spectrum. Because of the formation of conjugated c=c double bonds in the polymer chain, films of degraded PVDF become darker.
openaire   +1 more source

Synthesis of hydrofluorocycloolefins through dehydrofluorination of hydrofluorocycloalkanes in amide solvents

Journal of Fluorine Chemistry, 2019
Abstract Hydrofluorocycloolefins have outstanding economic and environmental advantages, as well as huge application potentials owing to their zero ozone depletion potentials (ODP) values and low global warming potentials (GWP) values. The synthesis of hydrofluorocycloolefins through dehydrofluorination of hydrohalocycloalkanes in N,N ...
Wenni Zhang, Chengping Zhang, Qin Guo, Fengniu Lu, Hengdao Quan   +4 more
openaire   +1 more source

Pd/AlF3 catalysts for catalytic dehydrofluorination of 1,1,1,3,3-pentafluoropropane

Chemical Research in Chinese Universities, 2015
A series of Pd/AlF3 catalysts was prepared by an impregnation method and tested for vapor-phase dehydrofluorination of 1,1,1,3,3-pentafluoropropane(HFC-245fa) to synthesize 1,3,3,3-tetrafluoropropene(HFO-1234ze). The highest activity was obtained over Pd/AlF3 catalyst containing 1.0%(mass fraction) of Pd, with an HFC-245fa conversion of 79.5% and an ...
Fang Wang, Wenxia Zhang, Yan Liang, Yuejuan Wang, Jiqing Lu, Mengfei Luo   +5 more
openaire   +1 more source

Dehydrofluorination of Phosphinines

Synfacts, 2023
openaire   +1 more source

Dehydrofluorination of alkyldifluoramines

The Journal of Organic Chemistry, 1969
Sharon K. Brauman, Marion E. Hill
openaire   +1 more source