83 results about "Organofluorine compounds" patented technology

Provided is a processing method with which it is possible to efficiently process an organic fluorine compound contained in a processing target liquid.　This processing method for processing an organic fluorine compound contained in a processing target liquid comprises: a step (a) for supplying electrons in and through the processing target liquid between a first electrode and a second electrode disposed apart from the first electrode; and a step (b) for, while said step (a) is being executed, irradiating the processing target liquid with ultraviolet rays exhibiting light emission intensity at least in a wavelength range of 200 nm or less.

The invention discloses a bacteriostatic and antiviral bamboo pulp paper-based sanitary isolation bag as well as a preparation method and application thereof, and belongs to the field of functional paper-based packaging materials. The isolation bag takes bamboo pulp fiber paper as a base material, and the surface of the isolation bag is coated with a water-based polyhydroxyalkanoate functional coating. According to the preparation method, a special polyphenol derivative-chitosan quaternary ammonium salt-nano zinc oxide organic-inorganic hybrid factor is introduced, and the problem of agglomeration of nano particles is effectively solved by utilizing the special bridging effect of polyphenol, so that high-density cation capture and oxidation inactivation sites are constructed on the surface of the coating. Compared with the prior art, the method has the advantages that the method does not need to depend on organic fluorine compounds, and the excellent waterproof and oil-proof barrier effect and the efficient inactivation of viruses can be achieved only through the extremely low coating amount. In addition, the isolation bag has unique environmental chemical responsiveness, can be efficiently dissociated under the alkaline condition to facilitate repulping recovery, can be completely biodegraded in the natural environment, and perfectly considers the requirements of biological safety protection and green environmental protection.

The present invention addresses the problem of how to effectively and efficiently extract, separate, and recover high-concentration PFAS contained in water regardless of the type of PFAS. An organic fluorine compound is converted to a chemical species having a negative charge on the basis of ionization by acid dissociation of the organic fluorine compound, molecularization of protonation-type hydrophobic cations, or both of these items, the distribution of the organic fluorine compound to an aqueous phase is promoted, and the organic fluorine compound is recovered.

The invention provides a green and efficient production method of hexafluoropropylene oxide, and belongs to the technical field of synthesis of organic fluorine compounds. The method comprises the following steps: carrying out a continuous oxidation reaction on hexafluoropropylene, oxygen and a perfluoro solvent in an immersed supergravity reactor to generate HFPO and byproducts carbonyl fluoride and trifluoroacetyl fluoride, removing the solvent from the reacted liquid, feeding the liquid into an acyl fluoride rectifying tower, separating low-boiling-point acyl fluoride from the tower top, enriching HFPO, unreacted HFP and a small amount of acyl fluoride from the tower bottom, and carrying out a continuous oxidation reaction on the HFPO and the byproducts carbonyl fluoride and trifluoroacetyl fluoride. Converting acyl fluoride into anhydrous trifluoroacetic acid from a high-boiling-point substance at the bottom of the tower through a hydrolysis tower, carrying out alkali washing on the synthesis gas to obtain an HFPO crude product, and further carrying out drying and extractive distillation to obtain an HFPO product; acyl fluoride rectified by an acyl fluoride rectifying tower is directly used for producing PAVE, and long-chain perfluoroacyl fluoride accumulated in a solvent of oxidation reaction is hydrolyzed to synthesize a non-PFOA emulsifier. The method has the advantages of high HFPO selectivity, short reaction time and high safety; the method realizes resource comprehensive utilization of byproducts, and is environment-friendly and economical.

The present invention relates to a technique for appropriately adsorbing an organic fluorine compound (PFAS) represented by PFOA / PFOS, harmful organic chemical substances such as BTEX, agrochemical substances, heavy metals, and the like, which have flowed out into an environment such as soil. The main purpose of the present invention is to provide a technique capable of effectively dispersing a porous carbon material, which is an adsorbent material, in a liquid. As a result of in-depth studies, the present inventors have found that a porous carbon material can be effectively dispersed in a liquid by using an ionic biodegradable polymer as a dispersant.

To provide a novel adsorbent, an adsorbent for removing organofluorine compounds, an adsorbent for permeable purification walls, and a method for removing organofluorine compounds. [Solution] An adsorbent containing (A) activated carbon and (B) zeolite.

Provided is a water treatment apparatus and method that purifies polluted water or the like that is contaminated with difficult-to-decompose organic substances such as organic fluorine compounds, and that has a simple structure and is easy to operate. [Solution] The water treatment device 1 is composed of a treatment tank 10, a plasma micro-bubble generator 20 and a high-voltage power supply unit 30. A high voltage is applied from the high-voltage power supply unit 30 to a fluid F containing micro-bubbles FB flowing out from the plasma micro-bubble generator 20 to generate discharge plasma inside the micro-bubbles FB, which is then mixed with the water to be treated WD contained in the treatment tank 10, thereby decomposing difficult-to-decompose organic substances present in the water to be treated WD.

An etching gas composition includes a first organofluorine compound having 3 to 6 carbon atoms, and an organosulfur compound having 1 to 4 sulfur atoms. The organosulfur compound may include a carbon-fluorine (C—F) bond, a carbon-sulfur (C—S) bond, at least one carbon-carbon double (—C═C—) bond. When the etching gas composition is used, excellent etch selectivity may be obtained, and the linearity and verticality of a pattern may be greatly increased by improving line edge roughness (LER) and line width roughness (LWR) due to an improvement in the roughness of an etched surface.

To provide an infrared cut film which does not contain an organic fluorine compound.SOLUTION: There is provided an infrared cut film in which an infrared absorption layer is laminated on a transparent base material. The infrared absorption layer is a cured product of a resin composition containing an infrared absorption component, an acrylic compound not containing fluorine and silicone, an acrylic compound not containing fluorine but containing silicone, and a photoinitiator.SELECTED DRAWING: None

An activated carbon regeneration method comprising a microwave irradiation step that involves heating activated carbon to which an organic fluorine compound has adhered to a temperature higher than 800°C via a microwave irradiation treatment.

An apparatus for treating a fluid including an organofluorine compound, the apparatus including: a vessel that contains a liquid with a fluoride bonding agent; a combustion chamber in fluid communication with the vessel via an outlet submerged in the liquid; an inlet configured to introduce the fluid into the combustion chamber; and a flame source configured to produce a flame in the combustion chamber to at least partially break down the organofluorine compound to form a gaseous combustion product bearing fluoride, wherein the gaseous combustion product passes from the outlet of the combustion chamber through the liquid so that the fluoride in the gaseous combustion product is at least partially bound by the fluoride bonding agent.

This invention provides a method for regenerating activated carbon by decomposing the organic fluorine compounds attached to the activated carbon, thereby regenerating the activated carbon. [Solution] A method for regenerating activated carbon, comprising a microwave irradiation step which includes heating activated carbon to a temperature exceeding 800°C by microwave irradiation treatment, on which an organofluorine compound is attached.

The present invention provides a method for treating water that can decompose organic fluorine compounds contained in the water to be treated. [Solution] A method for treating water to be treated, comprising a decomposition step of passing an electric current through water to be treated W1a containing an organofluorine compound and an electrolyte, and having an electrical conductivity of 6.0 mS / cm or higher, to decompose the organofluorine compound in the water to be treated W1a. The treatment method can be used to decompose organofluorine compounds in contaminated water W1A that is contaminated with organofluorine compounds such as perfluorooctanesulfonic acid and perfluorooctanoic acid.

The invention belongs to the technical field of organic fluorine compounds, and particularly provides a continuous preparation method of 3-nitro-4-cyanobenzotrifluoride, which comprises the following steps: S1, introducing 3-nitro-4-methylbenzotrifluoride, bromine and a free radical initiator into a first continuous reactor containing a brominated anhydrous solvent to generate 3-nitro-4-bromomethyl benzotrifluoride; s2, introducing the 3-nitro-4-bromomethyl benzotrifluoride obtained in the S1 and cuprous cyanide into a second continuous reactor containing a cyaniding anhydrous solvent to generate a 3-nitro-4-cyano benzotrifluoride crude product, filtering, separating out a copper-containing filter cake, and distilling the obtained filtrate to obtain the 3-nitro-4-cyano benzotrifluoride crude product; s3, carrying out regeneration cycle on the copper-containing filter cake; and S4, carrying out reduced pressure distillation on the crude product obtained in the S2 to obtain the high-purity 3-nitro-4-cyano trifluorotoluene. Through the steps, cuprous cyanide regeneration can be realized, and efficient utilization of resources is realized.

Provided is an oxygen scavenger package comprising an oxygen scavenger and an air-permeable packaging bag (A) in which the oxygen scavenger is accommodated. The air-permeable packaging bag (A) contains no organic fluorine compound and is formed from a laminated packaging material (A1) comprising an outer layer (a1) having through-holes, an air-permeable layer (a2) having air permeability, and an inner layer (a3) having through-holes, in this order. The laminated packaging material (A1) has an air impermeability of 5-25,000 sec, excluding 25,000 sec, the outer layer (a1) and the air-permeable layer (a2) are bonded or fusion-bonded to each other over the entire interface, and the ratio of the number of the through-holes of the outer layer (a1) to the number of the through-holes of the inner layer (a3) is 0.08-40.0.

This cracking catalyst is used for cracking organic substances (excluding organic fluorine compounds), and has a carrier and a complex. The carrier is constituted from a conductor or a semiconductor. The complex is supported on the carrier. The complex is represented by a formula (1) and is formed from a transition metal and a π electron-containing organic ligand. The cracking catalyst may be used at a temperature below 40ºC. The cracking catalyst may be used in the presence of an oxidizing agent. The carrier may be constituted from a carbon material having a functional group containing hydrogen and / or oxygen.

A pollutant treatment system (1) comprises: a heating furnace (2) which pyrolyzes pollutants; and a wet recovery device (4) which brings high-temperature exhaust at 500 °C or higher discharged from the heating furnace (2) into contact with liquid water to recover, into the liquid water, by-products in the high-temperature exhaust and cools the high-temperature exhaust to 300 °C or lower.

The invention provides a method for efficiently preparing perfluorotripropylamine, and belongs to the field of organic fluorine compound preparation. A two-step strategy of'continuous gas phase pre-fluorination-electrochemical deep fluorination 'is adopted. Tripropylamine and F2 / N2 gas are catalyzed by gradient pore cobalt oxide at high temperature and normal pressure, rapid pre-fluorination is carried out, and crude PFTPA is recovered. And dissolving the crude PFTPA and anhydrous HF, carrying out deep fluorination by adopting an electrolytic bath, and then carrying out alkali washing, alcohol refluorination and rectification to obtain the perfluorotripropylamine. The method is high in process safety, excellent in environmental protection property, simplified in equipment and suitable for industrial production.

To provide a method for treating organofluorine compound-containing water, in which cavitation caused by a low-pressure jet stream can be utilized for decomposition treatment of a hardly decomposable organofluorine compound contained in environmental water.SOLUTION: The method for treating the water containing the organic fluorine compound comprises adding a gas to the water containing the organic fluorine compound, injecting the water containing the organic fluorine compound into water through an injection nozzle to cause cavitation and to generate bubbles of <1 μ m, and decomposing the organic fluorine compound contained in the water containing the organic fluorine compound by utilizing the cavitation and the bubbles of <1 μm. The discharge pressure of the injection nozzle is 0. 3MPa or less, and the number of circulations of the water containing the organic fluorine compound through the injection nozzle is set according to the content of the organic fluorine compound and the required reduction ratio.SELECTED DRAWING: Figure 1

This decomposition catalyst is used for the decomposition of an organic fluorine compound. This decomposition catalyst has a carrier and a complex. The complex is supported by the carrier. The carrier is composed of a conductor or a semiconductor. The complex is represented by formula (1) and is formed of a transition metal and a π-electron-containing organic ligand. The organic fluorine compound may be a perfluoroalkyl compound and / or a polyfluoroalkyl compound. In formula (1), M may be at least one element that is selected from the group consisting of Mn, Fe, Co, Ni, Cu, Ru, Rh, Cr, V, Mo, Re, and Os.　

This invention provides a method for regenerating an adsorbent that allows for easy control of the detachment of organofluorine compounds from the adsorbent to which the organofluorine compounds are attached. [Solution] A method for regenerating an adsorbent, comprising a contact step of bringing an adsorbent to which an organic fluorine compound is attached into contact with steam heated to 150°C or higher to remove the organic fluorine compound from the adsorbent.

Provided are: a binder composition for nonaqueous secondary battery positive electrodes which is excellent in durability against an electrolytic solution and in dispersibility of a positive electrode active material and is also compliant with organic fluorine compound regulations, and with which a secondary battery exhibiting excellent battery properties such as charging / discharging efficiency and a capacity retention rate can be formed; a composition for nonaqueous secondary battery positive electrodes which contains the binder composition for positive electrodes; a positive electrode formed from the composition for positive electrodes; and a secondary battery including the positive electrode.　The binder composition for nonaqueous secondary battery positive electrodes contains a urethane resin and a nonaqueous solvent. The urethane resin is obtained by reacting an aromatic polyisocyanate, a chain extender having a molecular weight of 50-500, and a polyol having a molecular weight of 500-5000.

An object of the present invention is to provide a novel surface treatment method capable of imparting water repellency and oil repellency to a surface of a treatment target, a surface treatment kit, and a surface-treated product.SOLUTION: A coating film having water repellency and oil repellency is formed on the surface of an object to be treated by performing a first step of applying a liquid agent for substrate treatment containing colloidal silica on the surface of the object to be treated and a second step of applying a liquid agent for fluorine coating containing a silane coupling agent having an organic fluorine-based compound group on the surface of the object to be treated after performing the first step.SELECTED DRAWING: Figure 1

To provide a protein foam fire extinguishing agent containing no PFAS, which has a desired alcohol resistance without containing PFAS that has become a problem in environmental contamination.SOLUTION: A protein foam fire extinguishing agent is composed mainly of a hydrolyzed protein solution, and contains, as an essential component, a compound whose structural formula includes an iron ion and amino acid, but contains no organofluorine compound (PFAS).SELECTED DRAWING: None

To provide an in-situ purification system capable of decontamination of soils and underground waters contaminated with organofluorine compounds such as PFOS and PFOA, and a purification method using the same, solving problems of conventional arts.SOLUTION: An organofluorine compound in-situ purification system is a system for in-situ decontamination of soils contaminated with organofluorine compounds and is assembled with a soil warming device and a decomposition treatment device. The soil warming device is a device for warming soils by applying voltage to 3 or more of electrode wells constructed in soils for feeding electric current to the soils. The decomposition treatment device is a portable type to be installed on a ground, and is a device for decomposition of organofluorine compounds by blowing ozone gas to contaminated water prepared by cooling contaminated water vapor and irradiating the contaminated water with UV light.SELECTED DRAWING: Figure 1

To provide a positive photosensitive resin composition that achieves excellent removability of residual material and suppressed film thinning, and that allows micro-hole formation, without relying on organofluorine compounds, as well as an organic EL element partition wall, an organic EL element insulating film, and an organic EL element.SOLUTION: Provided is a positive photosensitive resin composition which contains a hydrophobic resin (A), a quinonediazide compound (C), and a silicone-based surfactant (D) having a silicon atom in the side chain.SELECTED DRAWING: None

The invention discloses an artificial SEI film coated hard carbon negative electrode material as well as a preparation method and application thereof, and particularly relates to the field of sodium ion batteries. Comprising the following steps: putting a biomass carbon source and an organic fluorine compound into a solvent, and carrying out hydrothermal reaction to obtain a hard carbon precursor; carbonizing the hard carbon precursor to obtain a hard carbon material; the method comprises the following steps: grinding and mixing a hard carbon material, conductive carbon black and a binder, and preparing the mixture into slurry; and coating a negative electrode current collector with the slurry, and depositing a transition metal oxide film on the surface of the slurry to obtain the negative electrode material. Based on the method, the generation of interface side reaction in the battery circulation process can be effectively inhibited, and the reversible specific capacity and the first coulombic efficiency of the battery are improved.

The present invention relates to a preparation method of an organofluorine compound, and more particularly to a preparation method of 2,3,3,3-tetrafluoropropene, wherein the method is based on 2,3-dichloro-1,1,1-trifluoropropane as a raw material, and under the joint action of a Lewis acid catalyst and a fluorinating agent, 2-chloro-1,1,1,2-tetrafluoropropane is reacted to obtain 2,3,3,3-tetrafluoropropene, and finally the 2-chloro-1,1,1,2-tetrafluoropropene prepared is reacted with an alkali, and hydrogen chloride is removed to obtain 2,3,3,3-tetrafluoropropene. The method in this application has the advantages that reaction conditions are mild and selectivity is high, so that the preparation efficiency of 2,3,3,3-tetrafluoropropene can be significantly improved during the reaction. In addition, the separation and collection difficulty of product can also be effectively reduced by the method in the present invention, and the manufacturing cost of 2,3,3,3-tetrafluoropropene is reduced.

To provide a method for decomposing waste liquid of an organic fluorine compound.SOLUTION: A waste liquid treatment method for decomposing an organic fluorine compound by means of microorganisms, wherein the organic fluorine compound is decomposed by using an aerobic reducing bacterium.

A foam separation treatment method is provided that separates organofluorine compounds from treated water by introducing gas into the treated water containing organofluorine compounds and recovering the foam generated. A polymeric surfactant is introduced into the treated water. Therefore, a foam separation treatment method capable of efficiently separating organofluorine compounds from treated water containing organofluorine compounds is provided.