52 results about "Pentafluoride" patented technology

A new method for preparing fluorinated phenylsulfur pentafluorides is disclosed. A fluorinated phenylsulfur halotetrafluoride is reacted with SbF_nCl_m and SbF₃ to form a fluorinated phenylsulfur pentafluoride.

A process for phosphorus pentafluoride production by which high-purity phosphorus pentafluoride can be produced by a simple and economical procedure without the need of a large-scale purification apparatus or high-pressure apparatus and without generating a large amount of a by-product gas requiring a special discharge-gas treatment. The process for phosphorus pentafluoride production is characterized by introducing hydrogen fluoride and a hexafluorophosphate (MPF₆) into a vessel and reacting them according to the reaction shown by the scheme (1) to yield phosphorus pentafluoride. MPF₆+uHF→PF₅+MF r(HF) (Scheme 1) In the scheme, M is at least any one of Li, Na, K, Rb, Cs, NH₄, and Ag; 0≦r≦u; and the HF is used in an amount not smaller than the stoichiometric amount.

Novel methods for preparing arylsulfur pentafluorides are disclosed. Arylsulfur halotetrafluoride is reacted with a fluoride source under hydrous conditions to form an arylsulfur pentafluoride. The purification method is also disclosed.

The present invention discloses a method for purification of 1, 1, 1, 3, 3-propane pentafluoride. It is characterized in that it can obtain the purified products of 1, 1, 1, 3, 3-propane pentafluoride by effectively separating impurity substances of the crude products such as the trifluorochloropropene, the tetrafluorochloropropene, the tetrafluoropropylene and so on, wherein it adopting a sorbent with a manner of selective adsorption. This invention selects a molecular sieve of A, X, Y, ZSM -5 type treated by alkali metal ion, alkaline-earth metal ion, transient metal ion, rare-earth metal ion and rare-earth metal or a carbon molecular sieve and we can choose any type of the said molecular sieve or we can choose two or more to combine them. The invention is suitable for the industrial production and it can not dramatically decompose the propane pentafluoride while adsorbing the the trifluorochloropropene, the tetrafluorochloropropene and the tetrafluoropropylene with a high select and is friendly to the environment.

The invention discloses a method for preparing pentafluoride ethyl perfluoro isopropyl ketone through gas phases. The method is characterized in that under the existence of addition catalysts, hexafluoropropylene and hexafluoropropylene oxide or pentafluoropropionyl fluoride take gas phase addition reaction to obtain the pentafluoride ethyl perfluoro isopropyl ketone, or tetrafluoroethylene and heptafluorobutyl fluoride take gas phase addition reaction to obtain the pentafluoride ethyl perfluoro isopropyl ketone. The method has the advantages that the reaction route is short; in addition, rawmaterials such as the hexafluoropropylene, the tetrafluoroethylene, the hexafluoropropylene oxide and carbonyl fluoride can be easily obtained; the cost is low; the yield of the pentafluoride ethyl perfluoro isopropyl ketone is high; the continuous large-scale industrial production can be realized through the route.

The invention provides a preparation method for bromopentafluorobenzene. The bromopentafluorobenzene is prepared by undergoing decarboxylation and bromination two-step reactions on phenyl-pentafluoride. The reaction operation is simple and practicable, and the method has industrial production application value.

The invention relates to a biological alcohol ether fuel. The biological alcohol ether fuel is totally free from fossil fuel, prepared by combining the biological alcohol ether resource or coal chemical industry alcohol ether resource and biological fatty oil and can replace gasoline, diesel oil, boiler fuel oil and oil for ships. 50-70% of methanol (or ethanol), 20-40% of dimethyl ether (or diethyl ether, methylal and the like), 3-7% of IPB (or isopropanol), 1.27-7.27% of normal butanol, 0.09-0.11% of castor oil, 0.1-0.3% of rape seed oil, 0.005-0.015% of pentafluoride butane, 0.01-0.03% of ferrocene, 200.2-200.6% of tween are added to a pressure vessel and evenly mixed to form a basic alcohol ether fuel, the basic alcohol ether fuel is used as the main raw material to be further blended into the biological alcohol ether fuel which can replace gasoline and diesel oil for vehicles, the boiler fuel oil and the oil for ships according to different uses. The biological alcohol ether fuel is a low-carbon oxygen-containing fuel which features clean combustion gas and obviously reduced soot.

The invention provides a preparation method of high-purity and low-cost lithium hexafluorophosphate. The steps are as follows: (1) Add a sufficient amount of anhydrous hydrogen fluoride to the dry reactor, and make the hydrogen fluoride liquid under the action of the coolant; (2) pass the phosphorus pentafluoride gas generated by the reaction of calcium fluoride and phosphorus pentoxide through molecular sieves Adsorption and drying to remove impurities, and then introducing into the liquid formed in step (1) to form a hydrogen fluoride solution of hexafluorophosphoric acid; (3) slowly adding the hydrogen fluoride solution of high-purity lithium chloride to the solution formed in step (2), Reaction while stirring; (4) crystallization by lowering the temperature, passing dry phosphorus pentafluoride gas to react with entrained lithium fluoride and lithium oxyphosphate impurities to convert them into products. Heat up, absorb HF under reduced pressure with a vacuum absorber, and dry the product in vacuum to obtain high-purity lithium hexafluorophosphate with a purity of 99.96-99.99%. The present invention uses cheap and easy-to-obtain raw materials such as calcium fluoride, phosphorus pentoxide, and lithium chloride for the first time to synthesize lithium hexafluorophosphate through liquid-liquid reaction, preparation, separation, and purification in one pot. The production cost is low, the toxicity is small, the operation is simple, and the reaction rate is high. It is easy to control, simple to separate and remove impurities, high in product purity, and convenient for industrialization.

The invention discloses a method for preparing HCFC-244bb. According to the method, 2-chloro-3, 3, 3-trifluoropropene is used as raw materials. The method comprises the following steps that, a metal halide and an ionic liquid are used as a catalyst, and fluorination is conducted on 2-chloro-3, 3, 3-trifluoropropene and a hydrogen fluoride solution, so that HCFC-244bb is prepared, wherein the metalhalide is antimony pentafluoride or antimony pentachloride or tantalum pentafluoride or tantalum pentachloride or niobium pentafluoride or niobium pentachloride, the general formula of ionic liquid is X+A-, X+ is positive ions of C1-C8 alkyl substitution type double-alkyl imidazole, pyridine and quaternary ammonium salt, A- is negative ions of tetrafluroborate negative ions or hexafluorophosphatenegative ions, the molar ratio between the metal halide and the ionic liquid is 1-3:1, the molar ratio between hydrogen fluoride and 2-chloro-3, 3, 3-trifluoropropene ranges is 1.1-10:1, and the reaction temperature ranges from 20 DEG C to 70 DEG C. The method for preparing HCFC-244bb has the advantages that the reaction temperature is low, the conversion rate is high, the selectivity is high, and chlorine is not needed in the reaction process. The method is used for preparation of HCFC-244bb.

The invention discloses a preparation method of 2, 3, 5, 6-phenylcarbinol tetrafluoride; the preparation method is as follows: the 2, 3, 4, 5, 6-cyanobenzene pentafluoride is taken as initial raw material; cyano group is firstly reduced by catalytic hydrogenation, and then diazotization and hydrolysis reaction are carried out for obtaining hydroxide radical, and then contraposition defluorination is carried out for obtaining the 2, 3, 5, 6-phenylcarbinol tetrafluoride; or the 2, 3, 4, 5, 6-cyanobenzene pentafluoride is taken as initial raw material, the contraposition defluorination is carried out for obtaining the 2, 3, 5, 6-cyanobenzene pentafluoride, the hydroxide radical is reduced by the catalytic hydrogenation, and then the diazotization and the hydrolysis reaction are carried out for obtaining the 2, 3, 5, 6-phenylcarbinol tetrafluoride. The two synthetic routes of the invention both comprises the three reaction steps of catalytic hydrogenation, diazotization and hydrolysis and contraposition defluorination; wherein, in the catalytic hydrogenation process, acid is added for obtaining amine salt, and the diazotization and the hydrolysis reaction are carried out by a one pot process, thus leading byproducts to be greatly reduced, the main products to have high purity and the yield coefficient to reach more than 74 percent; in addition, the whole process has simple operation, mild reaction condition and cheap and easily obtained raw material; catalyst and solvent can be recycled and used, thus reducing pollution, being environment-friendly, having economic value and being suitable for industrialization.

The invention discloses a composition with 1,1,1,3,3-pentafluoride butane, which comprises the following parts: a) 51%-95% 1,1,1,3,3-pentafluoride butane, b) 1%-46% non-combustible fluorine compound of perfluoroiodo paraffin and/or perfluorketone. The composition reduces the flammability of 1,1,1,3,3-pentafluoride butane, which is fit for cryogen, foamer, abluent and solvent.

The invention provides a magnesium aluminum pentafluoride/nitrogen-doped carbon lithium-sulfur battery positive electrode material and a preparation method thereof. The method comprises the steps of carrying out acid modification treatment on attapulgite, uniformly mixing with glucose and ammonium chloride, evaporating to dryness, calcining to obtain nitrogen-doped carbon-coated attapulgite, treating with hydrofluoric acid to obtain magnesium aluminum pentafluoride/nitrogen-doped carbon, and carrying out sulfur loading to obtain a magnesium aluminum pentafluoride/nitrogen-doped carbon sulfur-loaded composite material; and mixing the obtained composite material with a conductive agent and a binder in a solvent, coating the mixture on a current collector, and drying to obtain the magnesium aluminum pentafluoride/nitrogen-doped carbon lithium-sulfur battery positive electrode material. The nitrogen-doped carbon amorphous carbon tube in the obtained positive electrode material has a confinement effect on polysulfide, the magnesium aluminum pentafluoride loaded on the inner surface and the outer surface of the amorphous carbon tube has an adsorption effect on polysulfide, a shuttling effect of the polysulfide can be effectively inhibited through the synergistic effect of the magnesium aluminum pentafluoride and the polysulfide, and the electrochemical performance of the lithium-sulfur battery is improved. The preparation method provided by the invention is simple and convenient in process, low in cost and good in industrialization prospect.

The invention relates to Raf kinase inhibitor pentafluoride sulfur-based aryl urea, and a preparation method and applications thereof. The structure of pentafluoride sulfur-based aryl urea is represented by formula I, wherein Z, R1, R3, R2, m, and n are defined by the patent claims and the patent specification. Pntafluoride sulfur-based aryl urea can be used as a Raf kinase inhibitor, possesses excellent stability, and can be used for preparing medicines used for preventing and/or treating Raf kinase induced diseases.

The invention belongs to a herbicide for removing monogenus or dicotyledonous weeds in a paddy field, in particular to a compound herbicide with effective active components in percentage by weight: 1pyrazosulfuron-ethyl, 0.75-2 grass amine sulfonamide pentafluoride and 4-7 cyhalofop butyl as well as preparations with different contents and a plurality of preparation formulations; and the compoundherbicide comprises the effective active components, a wetting additive, a filler, and the like. The invention obviously improves the effect, increases a weed control speed, obtains the effect of preventing and removing a plurality of broad-leaved weeds and gramineae weeds in a paddy field after compounding the pyrazosulfuron-ethyl, the grass amine sulfonamide pentafluoride and the cyhalofop butyl, has low toxicity and remains, expands a weed removal spectrum, remarkably reduces the dosage, the medicament-applying number and the medicament cost and is beneficial to delaying the succession speed of weed communities and prolonging the service life of the herbicide.

The invention relates to three luorescence complexes formed on the basis of Eu (III) and chlorosulfonation four-tooth Beta-diketone ligands, as well as the application thereof. The three luorescence complexes are formed through Eu3+ and three chlorosulfonation four-tooth Beta-diketone ligands, namely 1, 2-bi (1', 1', 1', 2', 2', 3', 3' -seven fluorine-4', 6- hexanedione-6'-group- para- phenmethyl)-4- chlorine sulfonyl benzene, 1, 2-bi(1', 1', 1', 2', 2'- pentafluoride-3', 5'- pentanedione-5'-group- para- phenmethyl)-4- chlorine sulfonyl benzene and 1, 2-bi(1', 1', 1'- trifluoride-2', 4'- butanedione-4'-group- para- phenmethyl)-4- chlorine sulfonyl benzene. The three chlorosulfonation four-tooth Beta-diketone ligands are that three probes are covalently attached with moleculars such as protein containing amino group, amino acid, peptide, nucleic acid and the like and used as fluorescence labelings for the moleculars, and used for biological determinations such as time-resolved fluoroimmunoassay and the like.

A method of producing solid lithium hexafluorophosphate (LiPF₆) includes reacting lithium fluoride (LiF) in solid form with gaseous phosphorous pentafluoride (PF₅) in a liquid perhalogenated organic compound that is non-reactive with, i.e. is inert to, the PF₅, thereby producing LiPF₆ in solid form.

The invention discloses a preparation method of high-purity lithium hexafluorophosphate, comprising the following steps: preparation of phosphorus pentafluoride, preparation of high-purity lithium fluoride and synthesis of lithium hexafluorophosphate. The high-purity phosphorous pentafluoride and lithium fluoride are prepared by accurately controlling that purity, dosage and reaction condition ofthe raw materials, and the high-purity lithium hexafluorophosphate is obtained by reacting the phosphorous pentafluoride and the lithium fluoride under closed conditions. In the process of reaction, by controlling the excess of chlorine gas and hydrogen fluoride gas relative to PCl3, the yield of phosphorus pentafluoride can be effectively increased and the production cost can be reduced. Lithiumfluoride is heated in a resistance furnace under the protection of nitrogen so as to promote the unreacted ammonium nitrate to decompose into gas completely and release gas, so as to be beneficial toimprove the purity of intermediate product lithium fluoride and the purity of product. The preparation method has the advantages of simple and controllable preparation method, low requirement on production equipment and high purity of the product lithium hexafluorophosphate which is an excellent electrolyte material for a lithium battery and the preparation method has broad prospect.

Novel processes for preparing arylsulfur pentafluorides are disclosed. Processes include reacting at least one aryl sulfur compound with a halogen and a fluoro salt to form an arylsulfur halotetrafluoride. The arylsulfur halotetrafluoride is reacted with a fluoride source to form a target arylsulfur pentafluoride.

The invention provides a high-fire-resistant rigid polyurethane foam external wall insulation material and a preparation method thereof. The high-fire-resistant rigid polyurethane foam external wall insulation material comprises a component A and a component B. The component A comprises, by weight, 1-4 parts of chlorinated polypropylene resin, 4-16 parts of brominated epoxy resin, 60-80 parts of polyether polyol, 5-10 parts of glass beads, 1-4 parts of catalysts, 15-30 parts of fire retardants, 1-3 parts of stabilizers and 15-30 parts of foaming agents. The component B comprises polyphenyl polymethylene polyisocyanate. The foaming agents comprise 1-5 parts of pentane, 6-12 parts of amyl pentafluoride and 2-6 parts of dichloroethane. The fire resistance of the insulation material is improved while excellent mechanical property is kept.

The invention discloses a high-efficient pesticide composition containing flumizone pentafluoride. Effective active components of the composition comprise an active component A and an active component B, wherein the active component A is flumizone pentafluoride, the active component B is anyone compound selected from the following components: spirotetramat and metaflumizone, and the weight ratio between the effective active component A and the effective active component B is 1:80-80:1. The composition has a synergistic effect for a plurality of insects which harm agricultural production, and has the advantages of reduction of pesticide dosage, reduction of residual quantity of the pesticide on crops, reduction of environment pollution, safety for people and livestock, and good compatibility with environment; insects are not easy to generate resistance to the pesticide.

The invention provides a preparation method of a vanadium pentoxide adsorbent. A comonomer N-(4-bromophemyl) maleimide, 1,1-difuoro-2,2-dichloroethylene and 1,1,3,3,3-pentafluoride-1-propylene are added to styrene in cross-linked polymerization, a polymer with an imide group and a fluorine element on a framework is generated, and anion exchange resin containing amido and an imide group is prepared after chloromethylation and amination reactions and the like. The imide group is introduced on the framework of the polymer, the amination reaction efficiency is improved, the binding force of the resin and anions containing vanadium is increased, and the adsorption capacity is improved. The fluorine element increases the corrosion resistance of the framework of the resin, the surface of a sphere is protected, accordingly, the service life is prolonged, and the application range of the adsorption material is widened. The preparation method is used for extracting vanadium pentoxide, and the prepared vanadium pentoxide adsorbent has the advantages of high content of functional groups, high adsorption capacity, long service life and the like.

The invention provides a magnesium aluminum pentafluoride/attapulgite/porous carbon composite material and a preparation method and application thereof. The composite material is a multilayer structure taking attapulgite as a carrier, and a carbon nano tube layer is wrapped on the surface of the carrier, the pores of the carbon nano tube layer and the pores of the attapulgite are filled with the magnesium aluminum pentafluoride nano particles, and the magnesium aluminum pentafluoride nano particles are spread on the surface of the carbon nano tube layer. The method comprises the following steps of: acidifying the attapulgite to obtain modified attapulgite; carrying out carbon source adsorption and roasting on the modified attapulgite to obtain carbon-coated attapulgite; adding hydrofluoricacid and water into the carbon-coated attapulgite, heating and stirring, performing suction filtration, washing and drying to obtain the magnesium aluminum pentafluoride/attapulgite/porous carbon composite material; wherein the mass ratio of the attapulgite, hydrofluoric acid and water is 1: (6-2) : (4-8). The composite material is applied to the adsorption of anionic dye wastewater, and the maximum equilibrium adsorption capacity for Congo red dye is 1500-2100 mg/g.