376-27-2Relevant articles and documents
Reaction of Perhalofluoroalkyl Sulfinates With One-Electron Transfer Oxidants. A Facile Method For the Synthesis of Perhalofluorocarboxylic Acids
Hu, Chang-Ming,Xu, Ze-Qi,Huang, Wei-Yuan
, p. 433 - 437 (1990)
Reaction of perhalofluoroalkyl sulfinates with one-electron transfer oxidants, such as (NH4)2S2O8, Ce(SO4)2 or H2O2/Fe2+ afforded perhalofluorocarboxylic acids RfCO2H in good yield.
Fluoridation process of 1,3- full-fluorine compound 1,3- containing Edipivalic acid ester or dioxane ester
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Paragraph 0072; 0073, (2020/01/12)
The invention provides a fluorination process of 1,3-dioxolame ester or 1,3-dioxane ester containing perfluorinated compounds. The process comprises the following steps of putting a first fluorinationsolvent and a catalyst into a reaction kettle, wherein the catalyst is selected from one or several of boron trifluoride, cobalt trifluoride, bismuth trifluoride and arsenic trifluoride; dissolving ahydrocarbon substrate and a surfactant in a second fluorination solvent to obtain a raw material solution, wherein the surfactant is selected from one or several of perfluorononanoic acid, perfluorooctane sulfonate and tetrabutylammonium fluoride, and the hydrocarbon substrate is of a structure of a formula (I) or a formula (II); performing fluorination reaction on the raw material liquid and fluorine gas in the reaction kettle to obtain the perfluorinated compounds. In the specific fluorine-containing solvent, the low-cost hydrocarbon compounds are used as starting raw materials; the specialfluorine-containing surfactants and catalysts are used as the assistance so that the fluorine gas and the raw materials are in direct contact to be converted into the perfluorinated compounds. The method is simple; the cost is low; meanwhile, the yield is high.
FLUORINATED IMIDOYLAMIDINES VULCANIZING AGENTS
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Page/Page column 29-30, (2008/06/13)
The invention provides a compound and, tautomeric forms thereof having the formula (I): wherein Rf1 is selected from the group consisting of hydrogen, a straight chain, branched secondary or branched tertiary C1-C20 perfluoroalkyl group optionally containing ether or thioether linkages and C1-C10 perfluoroalicyclic group optionally containing ether or thioether groups; Rf2 is a straight or branched C1-C20 perfluoroalkylene group optionally substituted with ether and thiother linkages; and X is selected from the group consisting of fluorine and formula (II). . The invention also provides perfluoroelastomeric compositions cured with the perfluoroimidoylamidines of the invention as well as combinations of perfluoroimidoylamidines and other curing agents.
Aggregation Behavior of Mixed Fluorocarbon and Hydrocarbon Molecules in Aqueous Organic Solvents. Nonideality and Ideality of Mixing
Tung, Chen-Ho,Ji, Hai-Feng
, p. 8311 - 8316 (2007/10/02)
The emission spectra of naphthalene labeled hydrocarbons (NpHCn) and fluorocarbons (NpFCn) and anthracene labeled hydrocarbons (AnHCn) and fluorocarbons (AnFCn) in aqueous organic mixed solvents were investigated.The fluorescence spectrum of NpHC16 in dimethyl sulfoxide-water (DMSO-H2O) is dominated by excimer emission due to formation of aggregates.Addition of a fluorocarbon compound with chain length of seven perfluoromethylenes results in a reduction in the excimer emission and an enhancement of monomer emission, suggesting formation of coaggregates.In contrast, addition of a perfluorocarbon compound with chain length of 12 perfluoromethylenes results in no change in the fluorescence spectrum of NpHC16.Similarly, NpFC7 and NpFC12 in DMSO-H2) also exhibit excimer emission exclusively.Fluorescence studies show that hydrocarbon compounds coaggregate with NpFC7 but do not coaggregate with NpFC12.Selective excitation of the naphthalene moiety in the mixture solution of NpHC16 with AnFC7 or in the mixture solution of NpFC7 with AnHC12 exclusively leads to the emission of the anthracene moiety, suggesting that efficient energy transfer between the naphthalene and the anthracene chromophores occurs.On the other hand, for the mixture of NpHC16 with AnFC12 or NpFC12 with AnHC12, no energy tranfer was detected.All these observations indicate that fluorcarbon compounds with short chains can mix with hydrocarbon compounds ideally, while those with long chains behave nonideally.The mixed critical aggregation concentrations of NpHC16 with NpFC7 and with NpFC12 are measured as a function of overall composition of the mixtures, which give insight into yje magnitude of the nonideality of the mixings.
