256 results about "Sulfonyl fluoride" patented technology

Described are fluorochemical surfactants derived from nonafluorobutanesulfonyl fluoride that contain polyalkyleneoxy side chains and may be copolymerized with acrylic acid or methacrylic acid to form polyacrylates or polymethacrylates. The surfactants surprisingly lower the surface tension of water and other liquids in the same or similar low values achieved by premier surfactants such as those derived from perfluorooctane sulfonyl fluoride.

The invention relates to a preparation method of difluoro-sulfimide and lithium difluoro-sulfimide, and belongs to the field of fluorine chemical synthesis. The preparation method comprises the steps that difluoro-sulfimide is obtained by adding fluoro-sulfoxide into a mixture of sulfamic acid or amino sulfonyl fluoride and fluorosulfuric acid for reacting and then subjected to recrystallization and filtration which are conducted at the temperature of minus 100 DEG C to 16 DEG C and / or reduced / normal-pressure distillation and purification which are conducted at the temperature of 60 DEG C to 169 DEG C; difluoro-sulfimide and a lithium-containing substance react in a solvent to obtain lithium difluoro-sulfimide, and then recrystallization, filtration and purification are conducted. According to the preparation method, difluoro-sulfimide can be prepared through one step, lithium difluoro-sulfimide is obtained through lithiation, and the prepared products can be purified; few steps are needed, the technology is simple, the process is easy to control, the requirement on production devices is low, the production efficiency, the product yield and the purity are high, and large-scale production and application can be achieved.

Described are fluorochemical surfactants derived from nonafluorobutanesulfonyl fluoride that contain polyalkyleneoxy side chains and may be copolymerized with acrylic acid or methacrylic acid to form polyacrylates or polymethacrylates. The surfactants surprisingly lower the surface tension of water and other liquids in the same or similar low values achieved by premier surfactants such as those derived from perfluorooctane sulfonyl fluoride.

The invention provides a perfluorinated ion exchange resin as well as a preparation method and application thereof, wherein the perfluorinated ion exchange resin is provided with a phosphonate side group and sulfonyl fluoride short side groups with two different structures and has the function of high exchange capacity. The perfluorinated ion exchange resin is formed by tetrafluoroethylene, sulfonyl fluoride alkene ether monomers with the short side groups in two different structures, and a phosphonate side group alkene ether monomer through multi-copolymerization, and the repeated unit is represented by the following formula. An ion exchange membrane made of the resin can not only have various chemical media resistance, but also have high iron exchange capacity, high conductivity, high mechanical strength, high dimensional stability, low membrane resistance and long service life and is applicable for a fuel cell and a high-temperature fuel cell.

The present invention discloses a bisphenol A type poly sulfuric acid (ammonia) ester compound, and belongs to the technical field of polymers. The bisphenol A type poly sulfuric acid (ammonia) ester compound is prepared as follows: using bisphenol A dioxygen sulfonyl fluoride as a raw material for reacting with trialkyl silicon group-protected bisphenol or diamine in the presence of an inert gas for protection and a catalyst at 30-120 DEG C for 3 to 36 hours; and pouring the reaction mixture into water to precipitate a polymerization product, namely the bisphenol A type poly sulfuric acid (ammonia) ester compound. The bisphenol A type poly sulfuric acid (ammonia) ester compound has excellent mechanical properties, dielectric properties, tolerance and wear resistance, and has broad application prospects in aerospace, electronic communications, electromechanical and microelectronic industries. In addition, the high reaction activity bisphenol A type dioxygen sulfonyl fluoride compound is used as a polyester synthetic raw material, and compared with a traditional polyester process, the reaction condition is mild and easy to control, the reaction process is simple and easy to operate; the after treatment process is simple, the environmental pollution is less, and the bisphenol A type poly sulfuric acid (ammonia) ester compound is favorable to industrial production.

It is an object of the present invention to solve difficulty in production and to provide a process to obtain fluorinated sulfonyl fluoride compound having various molecular structures efficiently at a low cost. That is, the present invention provides a process which comprises reacting (FSO2—)nRA(-E-RB)m (1F) with fluorine in a liquid phase to form (FSO2—)nRAF(-EF-RBF)m (2), and decomposing this compound to obtain (FSO2—)nRAF(-EF1)m (3), provided that RA is a (n+m)valent organic group having at least two carbon atoms, RAF is a group having RA fluorinated, or the like, each of RB and RBF is a fluorinated monovalent organic group, or the like, E is —COOCH2— or the like, EF is —COOCF2— or the like, EFl is —COF or the like, n is an integer of at least 2, and m is an integer of at least 1.

The present invention describes the synthesis of new sulforated fluorinated elastomers having very low glass transition temperatures (Tg), a good resistance to bases, oils and fuels and good properties of workability. These elastomers contain, by way of example, from 80 to 60 mole % of vinylidene fluoride (VDF) and 20 to 40 mole % of perfluoro(4-methyl-3,6-dioxaoct-7-ene) sulfonyl fluoride (PFSO2F). In this case, they are prepared by radical copolymerisation of VDF and PFSO2F in the presence of different organic initiators, for example, peroxides, peresters or diazo compounds.

The invention discloses a lithium ion battery electrolyte and a lithium ion battery. The lithium ion batter electrolyte comprises non-aqueous organic solvent, lithium salt, a functional additive, a flame-retardant additive and a negative electrode film-forming agent. According to the scheme of the lithium ion batter electrolyte, perfluoroalkyl diphenyl sulfide is used as the functional additive on the basis of reasonably optimizing the non-aqueous organic solvent, the lithium salt and the negative electrode film-forming agent; the problem that the novel lithium salt corrodes an aluminium current collector can be effectively solved, wherein the novel lithium salt comprises lithium trifluoromethanesulfonate (LiCF3SO3), perfluoroalkyl sulfonyl lithium methide (LiC (CF3SO2)3, bi(trifluoromethyl sulfonyl) lithium imide (LTFSI), bi(sulfonyl fluoride) lithium imide (LiFSI) and the like; the cycling performance of the lithium ion battery is improved; the LiPF6 can be well replaced by the lithium ion battery electrolyte, and the lithium ion battery electrolyte can be widely applied to the secondary lithium ion battery electrolyte, and particularly suitable for lithium ion power batteries for improving the thermal stability of the lithium ion power batteries.

Disclosed are compositions prepared by free-radical-driven grafting onto hydrocarbons or hydrocarbon ethers of olefinically unsaturated fluorocarbons containing sulfonyl fluoride, fluorosulfonate, fluorosulfonimide, or fluorosulfonyl methide groups, wherein the grafting step is followed by a hydrolysis step in the case of sulfonyl fluoride.

The invention provides a method for preparing an alkali metal salt of (sulfonyl fluoride)( multi-fluorine alkoxy sulfonyl) imine, and preparing corresponding ionic liquids through a replacement reaction of the alkali metal salt and an ammonium salt, a phosphor salt, a sulfonium salt and the like. The invention provides an electrolyte material of a secondary lithium battery or carbon-based super capacitor based on an ionic liquid of an asymmetric (sulfonyl fluoride)( multi-fluorine alkoxy sulfonyl) imine negative ion. The electrolyte material has good compatibility with electrode materials of LiCoO2, LiFePO4, Li, graphite, Li4Ti5O12 and active carbon and the like.

The invention discloses a method for preparing bi-(sulfonyl fluoride) imine and (fluorinated alkyl sulfonyl fluorine sulfonyl) imine alkali metal salt. The method comprises the following steps of: reacting sulfamide and thionyl chloride and chlorosulfonic acid to prepare bi-(sulfonyl chlorine) imine and (fluorinated alkyl sulfonyl chlorine sulfonyl) imine, reacting with antimony trifluoride and potassium carbonate (rubidium or caesium) to obtain corresponding high-purity bi-(sulfonyl fluoride) imine potassium (rubidium or caesium) salt or (fluorinated alkyl sulfonyl fluorine sulfonyl) imine potassium (rubidium or caesium) salt, performing double decomposition exchange reaction using the potassium (rubidium or caesium) salt with the lithium perchlorate (or sodium) or lithium tetrafluoroborate (or sodium) in the aprotic polar solvent to obtain corresponding lithium (or sodium) salt with high purity. The method in the invention has the characteristics of simple operating steps, easy separation and extraction of output, high purity and yield, no environmental pollution, and the like, and is suitable for mass industrial production.