摘要:
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.
摘要翻译:本发明描述了具有非常低的玻璃化转变温度(Tg)的良好耐碱性,油和燃料的良好性能以及良好的可加工性能的新型磺化氟化弹性体的合成。 这些弹性体例如含有80至60摩尔%的偏二氟乙烯(VDF)和20至40摩尔%的全氟(4-甲基-3,6-二氧杂辛-7-烯)磺酰氟(PFSO 2F)。 在这种情况下,它们通过在不同的有机引发剂例如过氧化物,过酸酯或重氮化合物的存在下,通过VDF和PFSO 2 F F的自由基共聚来制备。
摘要:
The present invention describes the synthesis of new fluorinated elastomers with very low glass transition temperatures (Tg), a good resistance to bases, gasoline and other carburants and good workability properties, these elastomers contain hexafluoropropene (HFP), perfluoro(4-methyl-3,6-dioxaoct-7-ene) sulfonyl fluoride (PFSO2F), vinylidene fluoride (VDF) and/or at least one fluorinated alkene and/or one vinyl perfluorinated ether. In a precise case, they are prepared by radical polymerisation of HFP and PFSO2F or by radical terpolymerisation HFP, PFSO2F and VDF in the presence of different organic initiator, such as peroxides, peresters or diazo compounds.
摘要:
The present invention is concerned with a protective coating with current applied on a metallic collector of an electrode. The protective coating comprises a mineral binder vitreous or partly vitreous and optionally an electronic conduction additive. This coating is applied in the form of a solution or dispersion on the collector of the electrode and dried, so that it coats and protects at least part of the surface of the metal of the collector to prevent the formation of passivation films generated by active species produced by other components of the generator.
摘要:
The invention concerns a monomer of general formula A—(Q—S)p wherein: A=an aromatic or heteroaromatic ring; Q=a carbonaceous or siliceous divalent radical, respectively corresponding to general formulae: (CR1R2)n wherein: R1, R2=H, alkyl, alkenyl comprising between 1 to 4 carbon atoms and n ranges between 4 and 24; and [O—Si(R1R2)]n wherein R1, R2=H, alkyl, alkenyl comprising between 1 and 4 carbon atoms and n ranges between 3 and 24; S=a solvating segment consisting of at least an aliphatic chain comprising at least a polar heteroatom. 1≦p≦6. The invention also concerns the polymer (homopolymer or copolymer) incorporating said monomer, and their use in organic electroluminescent devices.
摘要翻译:本发明涉及通式A-(Q-S)p的单体,其中:A =芳族或杂芳族环; Q =分别对应于通式:(CR 1 R 2)n的碳质或硅质二价基团,其中:R 1,R 2 = H,烷基,包含1至4个碳原子的烯基 n范围在4到24之间; 和[O-Si(R 1 R 2)] n,其中R 1,R 2 = H,烷基,包含1至4个碳原子的链烯基,n在3和24之间; S =由至少包含至少一个极性杂原子的脂族链组成的溶剂化区段。 1 <= p <= 6。 本发明还涉及结合所述单体的聚合物(均聚物或共聚物)及其在有机电致发光器件中的用途。
摘要:
The invention concerns an aprotic electrolytic composition located in the separator and in at least one composite electrode containing a powder of an active electrode material, and if necessary an electronic conduction additive of an electrochemical generator The electrolytic composition comprises a first polymer matrix consisting of a polyether and at least a second polymer matrix, macroscopically separated, and also at least an alkaline salt as well as a polar aprotic solvent: The polymer matrices are capable of being swollen by at least one of the polar aprotic solvents. The solvent or mixture of solvents is unevenly distributed between the polymer matrices. The invention also concerns an electrochemical generator comprising a negative electrode and positive electrode reversible to alkaline ions and a separator with polymer electrolyte, the electrolytic component of which is the composition described above. The invention further concerns the manufacture in two or three steps of a sub-assembly of an electrochemical generator by coating an electrode support with a composite electrode containing the second matrix, followed by a surface coating on the electrode resulting from the preceding step with a solution containing the first polymer matrix so as to form the separator wholly or partly.
摘要:
In a rechargeable lithium battery including inter alia a lithium anode, a lithium ion reducible cathode bonded with a polymer, as well as a polymer electrolyte, potassium ions are introduced either in the cathode or in the electrolyte, or in both of them at the same time, so that potassium is distributed in the cathode and the electrolyte when the generator has reached equilibrium. This has the effect of stabilizing the performances of the battery during cycling in terms of energy and power.
摘要:
The invention relates to monomers derived from perhalogenated sultones, to a process for their preparation, to the polymers obtained from the said monomers and to their use for the production of ion-conductive materials.The monomers are compounds corresponding to the formula A--CFX--SO.sub.2 Z in which A denotes one groups R.sup.3 O--CF.sub.2 -- or R.sup.3 -- R.sup.1 R.sup.2 N--CO--; Z denotes F, Cl, --OSi(CH.sub.3).sub.3 or an ionic group, Z being other than F when A denotes R.sup.3 O--CF.sub.2 -- or R.sup.3 --; X denotes F, Cl, H or R.sub.F, X being R.sub.F when A denotes R.sup.3 --; the radicals R.sup.1, R.sup.2 and R.sup.3 are chosen from polymerizable nonperfluorinated organic radicals; R.sub.F is chosen from perfluoroalkyl radicals and perfluoroaryl radicals.The polymers obtained from these monomers can be employed for the production of ion-conductive materials.
摘要:
Bis(perfluorosulphonyl)methanes, process for preparing same and uses thereof. The compounds of the invention are based on the formula (1/nM)+[(R.sub.F SO.sub.2).sub.2 CY].sup.- in which Y denotes an electron-attracting group chosen from --C.dbd.N and RZ groupings in which Z denotes a carbonyl grouping, sulphonyl grouping or a phosphonyl grouping and R denotes an organic monovalent grouping, M denotes a metal having valency n or an organic group capable of existing in the cationic form, R.sub.F denotes a perfluoroalkyl or perfluoroaryl grouping. Said compounds are especially useful in the production of electrochemical devices.
摘要:
Ionically conductive material consisting essentially of a salt diluted in a liquid aprotic solvent. The salt is represented by one of the following formulas: ##STR1## where M is an alkaline or alkaline earth metal, a transition metal or a rare earth metal.
摘要:
The invention relates to a process for the synthesis of sulfonylimides.The process for the synthesis of sulfonylimides of the general formula M[RSO.sub.2).sub.2 N].sub.y, in which M represents a metal chosen from alkali metals, alkaline earth metals, rare earths, Al, Sc, Y and Th, R represents a monovalent radical chosen from linear or branched aliphatic radicals having 1 to 8 carbon atoms, alicyclic radicals having 3 to 8 carbon atoms, aryl radicals having 3 to 8 carbon atoms, and y is a number equal to the valence of M, is characterized in that an ionic nitride of the formula M.sub.3 N.sub.y, in which M and y have the meaning given above, is reacted with a sulfonyl halide of the formula RSO.sub.2 X, in which R has the meaning given above, and X is chosen from F or Cl, in an aprotic polar solvent.