235 results about "Hexafluorophosphoric acid" patented technology

The room temperature ionic liquid containing unsaturated double bond has the general expressino of A+B-, where A+ contains R1 being hydroxyl with 1-4 carbon atoms and R2 containing 2-20 carbon atoms and at least one double bond; and B- is one of anions, including chlorate radical, bromate radical, iodate radical, acetate radical, sulfate radical, nitrate radical, tetrafluorobromate radical, etc. Its preparation is to mixture and react olefin halide R1X and N-alkyl imidazole to obtain ionic liquid dialkyl imidazolium halide. The present invention also relates to the application of the ionic liquid in dissolving cellulose and preparing cellulose derivative.

The invention discloses an epoxy adhesive for OLED frame encapsulation and a preparation method of the epoxy adhesive. The epoxy adhesive is prepared from the following components in parts by weight:50-80 parts of epoxy resin, 5-10 parts of epoxy diluents, 5-10 parts of flexibilizer, 20-40 parts of filler, 1-5 parts of photoinitiator, 0.1-1 part of antioxidant and 0.3-3 parts of additive. The epoxy resin is one or a mixture of more of cycloaliphatic epoxy resin and bisphenol F epoxy resin. The epoxy diluent is one or a mixture of more of oxetane and aliphatic glycidyl ether. The photoinitiator is a cationic photoinitiator which comprises an iron-arene photoinitiator and a hexafluorophosphate photoinitiator. The epoxy adhesive adopts a curing way that ultraviolet exposure and heating are conducted in sequence, has the advantages of less curing agent residue, less volatile component residue, low curing temperature, strong bonding force, boiling resistance, water vapor resistance, oxygenbarrier performance and the like, and reaches the halogen-free standard.

The invention relates to a method for spearing butane from butylene with the multicomponent compound of ionic liquid, saline, ethyl methyl ketone and N-formylmorpholine. The content of ionic liquid in the multicomponent compound is 1.0 to 95 percent; the content of the saline in the multicomponent compound is 0.5 to 20 percent; the electropositive ion of the ionic liquid is iminazole electropositive ion, alkyl imidazole electropositive ion or alkyl quaternary ammonium ion, or the compound thereof; the electronegative ion is tetrafluoroborate electronegative ion, hexafluorophosphoric acid electronegative ion, nitrate ion, tetrachloro aluminic acid iron, heptachlor bi aluminic acid iron, chloride ion, bromine electronegative ion or the mixture; and the ionic liquid can be dimethylformamide potassium thiocyanate compound salt, dimethylformamide sodium sulfocyanate compound salt, or the compound; the saline is potassium thiocyanate, sodium sulfocyanate, ammonium thiocyanate, sodium nitrate, potassium nitrate, sodium iodide, potassium iodide, zinc chloride, copper chloride, zinc chloride, potassium bromide, or the compound thereof.

The invention provides a preparation method of a lithium hexafluorophosphate, which comprises the following steps: firstly, reacting a phosphorus pentachloride with an anhydrous hydrogen fluoride to form mixed liquid of the phosphorus pentachloride and the anhydrous hydrogen fluoride; secondly, preparing anhydrous hydrogen fluoride solution of lithium fluoride; and finally, adding the anhydrous hydrogen fluoride solution of the lithium fluoride into the mixed liquid of the phosphorus pentachloride and the anhydrous hydrogen fluoride, and sequentially performing reaction, crystallization, separation and drying to obtain a pure lithium hexafluorophosphate product. The preparation method of the invention has the advantages of mild reaction, high safety and purity of the lithium hexafluorophosphate product of over 99.9 percent; and the mother liquor can be reclaimed and reused so that the cost is reduced.

The invention discloses an ionic liquid polymer electrolyte and a preparation method thereof. An ionic liquid polymer is synthesized through using a polymer chemical functionalization process, and the structure of the ionic liquid polymer is represented by formula (1) shown in the specification. The ionic liquid polymer is formed through connecting N-methylimidazole with a polymer by chemical bonds, wherein the polymer can be a linear polymer and a hyperbranched polymer, the linear polymer is polyethylene oxide and polyepoxy chloropropane preferably, and the hyperbranched polymer is hyperbranched polyether preferably; and anion a can be halogen, tetrafluoroborate, hexafluorophosphate and ditrifluoromethyl sulfimide, and N-methylimidazole in the formula (1) can be substituted by a pyridine ring, tributyl amine and a pyrrole ring. The ionic liquid polymer electrolyte is composed of the ionic liquid polymer and a lithium salt, and contains no volatile solvents, and the conductivity at room temperature of the ionic liquid polymer electrolyte can reach 3.5*10<-4>Scm<-1>. The polymer electrolyte can be used in lithium ion secondary batteries, electrochromic devices, supercapacitors and other electrochemical devices.

The invention relates to a morpholine quaternary ammonium salt ionic liquid and a preparation method. The ionic liquid has the following structural general formula: A +B-, wherein, the A+ has the structural general formula as the right, in the general formula: R1 is the saturated or unsaturated alkyl containing 1 to 4 carbon atoms, and the R2 is in line with the following rules: a) at least 2 carbon atoms are contained; b) not more than 20 carbon atoms are contained; the B- is selected from one the following anions: chlorine, bromine, iodine, acetate, sulfate, nitrate, tetrafluoroborate, thiocyanate, hexafluorophosphate, p-toluenesulfonic and trifluoromethanesulfonic.

This invention describes a one pot, single-step process for the preparation of halide-free hydrophobic salts comprising polyalkylated imidazolium cations and various anions in accordance with the following structure, where R1 and R3 represent the either the same or different alkyl groups, and R2, R4, and R5 represent either hydrogen atoms, or the same or different alkyl group substituents; X represents a polyatomic anion that is the conjugate base of an acid. By simply mixing aqueous formaldehyde with an alkyl amine such as methylanune, ethylamine, n-propyl oriso-propylamine, or n-butyl-, iso-butyl, or t-butylamine, or by mixing aqueous formaldehyde with two alkyl amines (preferably one being methylamine, ethylamine, n-propyl- or iso-propylamine, or n-butyl-, isobutyl, or t-butylamine) and another being n-propyl- or isopropylaine, or n-butyl-, isbutyl, or t-butylamine), an acid (such as hexafluorophosphoric acid, trifluoroacetic acid, pentafluoropropionic, heptafluorobutyric acid, or the free acid of a bis(perfluoroalkylsulfonyprnide or tris(perfluoroalkylsulfonyl)methide as the source of the anion) and aqueous glyoxal solution, the hydrophobic ionic salts or mixtures thereof thus formed may be conveniently separated directly from the aqueous byproduct layer. Like the single cation hydrophobic salts, these mixed hydrophobic ionic liquids are non-flammable and manifest no detectable vapor pressure up to their decomposition temperature of greater than 300° C. We have also discovered that, surprisingly, ternary mixtures of dialkylated ionic liquids manifest higher ionic conductivities than a single ionic liquid of the mixture alone. This property benefits electrochemical power source applications such as batteries and capacitors. Furthermore, we have discovered that ternary mixtures of dialkylated ionic liquids absorb microwave radiation more efficiently than a single ionic liquid of the mixture alone. This property benefits microwave-induced synthetic reactions. Such physical and chemical properties make it possible to employ inexpensive mixtures of polyalkylated imidazolium cations in an advantageous manner as thermal transfer fluids, high temperature lubricants, and plasticizers, and as solvents in the areas of electrochemistry, synthetic chemistry, catalysis, and separations chemistry.

The invention relates to preparation of a cobalt adsorbent. The cobalt adsorbent is prepared by introducing bis(pentamethylcyclopentadienyl)cobalticinium hexafluorophosphate, (S,S)-(+)-N,N'-bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediaminocobalt and 1-vinyl-3-buthylimidazolium bis[(trifluoromethyl)sulfonyl]imide in polymerization to be polymerized.

The invention discloses a molecularly imprinted polymer for detecting ofloxacin and a preparing method and application thereof. A carrier, a template molecule, a functional monomer and a crosslinking agent are polymerized under the action of an initiating agent to form a composite material, and the template molecule is removed from the composite material to obtain the molecularly imprinted polymer; graphene / rhodium nano particles serve as the carrier, the template molecule is ofloxacin, the functional monomer is methyl ferrocenyl methacrylate, and the crosslinking agent is 3,3'-(1',4'-butane)-bi-1-vinyl imidazole hexafluorophosphoric acid. The invention further discloses application of an electrochemical transducer made of the molecularly imprinted polymer to ofloxacin detection. The electrochemical transducer made of the molecularly imprinted polymer has good adsorptive property to ofloxacin and is high in selectivity, not prone to interference and wide in detection linear range, and the lower detection limit can reach 0.06 micrometer.

The invention relates to a functional ionic liquid and a preparation method thereof. The structural formula of the ionic liquid is disclosed in the specification, wherein X<-> is Cl<-> (chloride ion), [BF4]<-> (tetrafluoroborate ion), [PF6]<-> (hexafluorophosphate ion) or [Tf2N]<-> (bistrifluoromethanesulfonimide ion), and n=0-15. After being introduced to the cation alkyl side chain of the ionicliquid, a phenanthroline group can coordinate with some metallic ions to form metallic coordination compounds, and can absorb energy and transfer the absorbed energy to the metallic ions so as to coordinate with rare earth ions, thereby being used for preparing a rare earth compound / ionic liquid material. The prepared material has the advantages of colorful emitted light, high color purity, long fluorescence lifetime and high quantum efficiency, and is applicable to the fields of display, new light sources, X-ray intensifying screens and the like.

The invention discloses a method for catalyzing and esterifying sulfoacid basal functional ion liquid in the formula (1), wherein, n equals to 2, 3 and 4; R is H or C1 to C4 saturated or unsaturated alkyl of straight chain or branched chain; negative ion B- is chlorine, bromine, iodine, sulfate radical, hydrogen sulfate radical, nitric acid radical, dihydrogen phosphate radical, tetrafluoride boric acid radical, hexaflurate phosphoric acid radical, acetic acid radical, methyl sulfoacid radical, paratoluenesulfonic acid radical, fluoroform sulfoacid radical and trifluoroacetic acid radical. The adding dosage of the ion liquid is 0.5 to 100 percent of the total mol of the alcohol and acid, reacting for 0.5 to 12 hours under the normal pressure and the temperature of 20 to 140 DEG C, the esterifying reaction is catalyzed to produce the ester. Compared with the traditional acidic catalyst, the ion liquid simplifies the separation of the product of the esterifying reaction and provides higher selectivity. The invention is distinctly characterized in that the phase separation between the produced ester and the catalyst is automatically finished, and the ion liquid is reusable after simple or non treatment.

The invention discloses a preparation method of difluorophosphoric acid alkali metal salt. In the method, the difluorophosphoric acid alkali metal salt is produced through a reaction of hexafluorophosphates of alkali metals and corresponding phosphates of the alkali metals in a solid phase or in a non-aqueous solvent, wherein the reaction equation is MPF6+M3PO4=2MPO2F2+2MF (M=Li, Na, K, Rb, Cs), the molar ratio of MPF6 to M3PO4 is 0.8-1.5:1, preferably 1.1-1.2:1, namely, the hexafluorophosphates of alkali metals is excessive properly to ensure reaction of the phosphates to be carried completely. The method can be used for preparing the difluorophosphoric acid alkali metal salt under safe situations, thereby improving safety of the preparation process and ensuring safety of preparation operators. The difluorophosphoric acid alkali metal salt is produced through a reaction of the hexafluorophosphates and the phosphates of the alkali metals, and the target product can be produced whether the reaction is carried out in solid phases or liquid phases under mild conditions without dangerous gas raw materials and generation of acidic gas or water which may damage performances of an electrolyte.