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30 results about "CFC - Chlorofluorocarbon" patented technology
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Jump to navigation Jump to search. Chlorofluorocarbons (CFCs) are fully halogenated paraffin hydrocarbons that contain only carbon (С), chlorine (Cl), and fluorine (F), produced as volatile derivative of methane, ethane, and propane. They are also commonly known by the DuPont brand name Freon.
Effluent gas stream treatment system having utility for oxidation treatment of semiconductor manufacturing effluent gases
InactiveUS6322756B1Reduce sensitivityReduces water requiredCombination devicesExhaust apparatusOxygenOxidative treatment
An effluent gas stream treatment system for treatment of gaseous effluents such as waste gases from semiconductor manufacturing operations. The effluent gas stream treatment system comprises an oxidation unit to which an oxygen-containing gas such as ozone may be added, with input of energy (e.g., thermal, radio frequency, electrical, microwave, etc.), to effect oxidation of oxidizable species in the effluent, such as halocompounds (e.g., chlorofluorocarbons, perfluorocarbons), CO, NF3, nitrogen oxides, and sulfur oxides). The effluent gas stream treatment system may include a wet scrubber associated with the oxygen-containing gas source, so that the gas stream is contacted with the oxygen-containing gas during the wet scrubbing operation, to enhance removal of oxidizable species in the gas stream during treatment.
Owner:BHT SERVICES PTE LTD
Lubricating oil for compression-type refrigerators containing pentafluoroethane and a polyvinyl ether
A lubricating oil for compression-type refrigerators using a refrigerant containing pentafluoroethane which lubricating oil comprises a polyvinyl ether compound having (a) a constituting unit represented by general formula (I):or a polyvinyl ether compound having constituting unit (a) and (b) a constituting unit represented by general formula (I'):(wherein R represents a hydrocarbon group which has 1 to 3 carbon atoms and may have ether bond in the group, and R' represents a hydrocarbon group which has 3 to 20 carbon atoms and may have ether bond in the group) as the main component. The above lubricating oil shows excellent compatibility with hydrofluorocarbon refrigerants containing pentafluoroethane which can replace chlorofluorocarbons causing environmental pollution, has a high volume intrinsic resistance, and exhibits excellent stability and lubricating property.
Owner:IDEMITSU KOSAN CO LTD
Stabilized hydrochlorofluoroolefins and hydrofluoroolefins
ActiveUS20100181524A1Low ozone depletionLower global warming potentialOther chemical processesNon-surface-active detergent compositionsScavengerOzone depletion potential
Disclosed is a combination of hydrofluoroolefins and / or hydrochlorofluoroolefins with stabilizers wherein the stabilizers minimize the degradation of the hydrofluoroolefins and hydrochlorofluoroolefins during storage, handling and use yet allow for atmospheric degradation. The combinations exhibit low or zero ozone depletion potential and lower global warming potential making them of interest as replacements for chlorofluorocarbons and hydrfluorocarbons. The combinations of the present invention comprise hydrofluoroolefins and / or hydrochlorofluoroolefins in combination with a stabilizer or stabilizers selected from free radical scavengers, acid scavengers, oxygen scavengers, polymerization inhibitors and combinations thereof.
Owner:ARKEMA INC
Water-blown, flame retardant rigid polyurethane foam
The present invention provides a flame-retardant polyurethane foam made with non chlorofluorocarbon / hydrogenated chlorofluorocarbon-containing blowing agents and without trimethylolpropane-based polyols that achieves a Class I rating as determined by a modification of the ASTM E-84 tunnel test and may find application in electronic cabinetry, architectural decorative moldings, and interior transportation vehicle walls.
Owner:COVESTRO LLC
Power generator using an organic rankine cycle drive with refrigerant mixtures and low waste heat exhaust as a heat source
A Rankine cycle system uses as a refrigerant one of several quaternary organic heat exchange fluid mixtures which provide substantially improved efficiency and are environmentally sound, typically containing no chlorofluorocarbons (CFCs) or hydrochlorofluorocarbons (HCFCs). The system includes a closed circuit in which the refrigerant is used to drive a turbine, which may be used to drive an electric generator or for other suitable purposes.
Owner:ACME ENERGY
Environment-friendly type refrigerating machine oil composition
The invention provides a refrigerating machine oil compound which comprises the following components on the basis of base oil weight: 1) 10 to 90 wt percent of fischer-tropsch syntholube base oil; 2) 1 to 10 wt percent of alkyl benzene and / or alkyl benzene lube base oil; 3) 5 to 85 wt percent of mineral oil and / or poly alpha olefins synthetic base oil; 4) effective quantity of surfactant; and 5) effective quantity of additive. The refrigerating machine oil and a refrigerant containing halogen provided by the invention have the advantages of good intersolubility, higher viscosity index, lower flock point and good thermal oxidation stability, and are particularly suitable for the refrigerating machine oil taking hydrofluorocarbon (HCF) as a refrigerant and the refrigerating machine oil taking chlorofluorocarbon (CFS) or low-molecular alkane as a refrigerant.
Owner:CHINA PETROLEUM & CHEM CORP +1
Fire-retardant polyurethane foam and preparation method thereof
The invention relates to fire-retardant polyurethane foam which is characterized by being prepared by foaming of a black material and a white material with a mass ratio of 1:1.2-1.4. The black material is isocyanate; the white material comprises the following components by weight: 5-15 parts of water glass; 40-55 parts of polyether polyol; 40-60 parts of polyester polyol; 0.1-0.5 parts of catalysts; 2-5 parts of foam stabilizers; 5-15 parts of halogen-free fire retardants; and 5-15 parts of graphite fire retardants. The invention also provides a preparation method of the fire-retardant polyurethane foam. According to the invention, water glass instead of chlorofluorocarbon foaming agents is added into existing polyurethane foam formulae, which effectively reduces environment pollution; the combined effect of water glass, halogen-free fire retardants, and graphite fire retardants improves the fire retardance of polyurethane, and the fire-retardant polyurethane foam is applicable to fields of building materials, furniture, insulation materials, automobile seat cushions and interior trims, and the like.
Owner:BEIJING RECHSAND SCI & TECH GRP
Thermally reactive resist material, laminated body for thermal lithography using the material, and mold manufacturing method using the material and the laminated body
A thermally reactive resist material is characterized in that the boiling point of a fluoride, i.e., an element of the material, is 200 DEG C or higher. Thus, the thermally reactive resist material having high resistance against dry etching to be performed so as to form a pattern having a large groove depth by using a chlorofluorocarbon gas is provided.
Owner:ASAHI KASEI KK
Method of making fluorinated propanes
InactiveUS20050020863A1Preparation by hydrogen halide split-offPreparation by halogen halide additionPropaneHydrofluorocarbon
The invention provides a process for the manufacture of fluoropropanes, and more particularly, the manufacture of 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) and 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea). The process utilizes 3-carbon by-products, i.e. waste material, from other commercial processes as raw material. The process also avoids the use of hexafluoropropane (HFP) as a reactant for making HFC-227ea, and is able to convert any three-carbon hydrocarbon (HC), hydrochlorofluorocarbon (HCFC), chlorofluorocarbon (CFC) compound or any halogenated propanes and produce high valued three-carbon hydrofluorocarbons (HFCs) at significantly lower cost than current commercial processes.
Owner:HONEYWELL INT INC
Process for producing metered dose inhaler formulations
InactiveUS20080066744A1Organic active ingredientsPowder deliveryBULK ACTIVE INGREDIENTMometasone furoate
Disclosed are methods of introducing a suspension or solution of a medicament, preferably mometasone furoate anhydrous, into a metered dose inhaler container, said container having a valve attached thereto, said method comprising the steps of introducing mometasone furoate anhydrous, a surfactant and a chlorofluorocarbon free propellant into a vessel that is held under pressure to form a suspension or solution, circulating said suspension or solution from the vessel through a line which includes a filling head, bringing said filling head into communication with said metered dose inhaler container through said valve of said metered dose inhaler container, introducing a quantity of such suspension or solution into the container from the filling head of the line through said valve of said metered dose inhaler container, withdrawing said filling head from said metered dose inhaler container, and sealing said metered dose inhaler container, as well as the products produced thereby having an improved particle size distribution of the active ingredients in metered dose inhalers.
Owner:MERCK SHARP & DOHME CORP
Water-blown inorganic hybrid melamine polyurethane rigid foam material and manufacturing method thereof
The invention provides a water-blown inorganic hybrid melamine polyurethane rigid foam material and a manufacturing method thereof, belonging to the fields of production of flame-retardant polyurethane energy-saving materials and building energy-saving technology. The manufacturing method comprises the following steps: with high-temperature-resistant inorganic hybrid melamine resin polyol or inorganic hybrid polyol etherified melamine resin, an emulsifier, a composite catalyst, a phosphate fire retardant, a foaming agent, and water or soluble glass as mainly raw materials, carrying out dispersion under stirring to separately prepare combined polyether; and then subjecting the prepared combined polyether and isocyanate MDI to foaming on a panel machine, a spray coater and a casting machine so as to prepare the environment-friendly water-blown inorganic hybrid melamine polyurethane rigid foam material with B1-grade flame retardation performance. The material provided by the invention is free of lower-boiling-point hydrocarbon compound chlorofluorocarbon and hydrochloroflurocarbon compounds, undergoes foaming in virtue of water, does not destroy an ozone layer nor produce greenhouse effect and is environment friendly; the flame resistance of the material is improved by at least 20%; and the material has excellent flame resistance while guaranteeing physical properties and has an oxygen index of more than 30%.
Owner:CHANGZHOU JUMBO ENERGY SAVING TECH CO LTD
Wear-resistant polyurethane insulating nanomaterial
The invention discloses a nano wear-resistant polyurethane thermal insulation material, which is made by foaming the following raw materials in proportion by weight: 60-80 parts of 2,6-toluene diisocyanate, 30-40 parts of polyether polyol, and nano silicon oxide 2-4 parts, 1-3 parts of nano zinc oxide, 1-3 parts of catalyst, 1-3 parts of flame retardant, 0.5-1 part of foaming agent, 3-5 parts of silicone oil, 10-12 parts of deionized water. The nano wear-resistant polyurethane insulation material of the present invention has high strength, light weight, low thermal conductivity, good dimensional stability, good heat insulation effect, good wear resistance and corrosion resistance, and has high-efficiency flame retardancy; and does not use chlorofluorocarbons (CFCs), Energy saving and environmental protection; at the same time, nano-silicon oxide and nano-zinc oxide are added to enhance the wear resistance and bond strength. In addition, the preparation process of the present invention is simple, low in cost, low in equipment requirements, environmentally friendly in the production process, easy in industrialized production, and suitable for wide application.
Owner:NANNING KEYU ENERGY TECH CO LTD
Non-cfc refrigerant mixture for use in multistage auto cascade systems
InactiveUS20140353542A1Non-flammableLow ozone depletionCompression machines with non-reversible cycleHeat-exchange elementsEngineeringFluorocarbon
A refrigerant mixture for use in multistage auto cascade ultralow and cryogenic temperature refrigeration systems. Particularly, the present invention relates to a refrigerant mixture comprising one hydrochlorofluorocarbon (HCFC) and the major proportion includes hydrofluorocarbons (HFC), fluorocarbons, hydrocarbons and natural gases. More particularly, the present invention relates to non-flammable, non-toxic refrigerant mixture having no chlorofluorocarbon (CFC). Further, the present invention aims in providing a refrigerant mixture having low Ozone Depleting Potential (ODP) combined with low Global Warming Potential (GWP).
Owner:SESHAMANI VARADARAJAN
Refrigeration lubricant composition
ActiveCN1869177ALow viscosityImprove the lubrication effectBase-materialsVernolic acidOctanoic Acids
This invention provides a lubricating oil compound used for refrigerator with low viscosity, upstanding lubricating property, and good long-term stability at low temperature, especially the lubricating oil compound used for refrigerator using non-chlorofluorocarbon cryogen. This lubricating oil compound comprises the ester made by reaction of mixed alcohol and mixed saturated straight chain carboxyl acid at specialized ratio, and the mobile viscosity of this compound at 40 DEG C is 6-28mm2 / s, the said mixed alcohol comprises 10-50mol% neopentyl glycol, 50-89mol% normosterol and 0.03-3mol% dipentaerythritol, the said mixed saturated straight chain carboxyl acid comprises 70-95mol% pentanoic acid and enanthic acid, and 5-30mol% octanoic acid.
Owner:NOF CORP
Corrosion-inhibition anti-scale dispersing agent
InactiveCN104893831ASurface-active detergent compositionsScale removal and water softeningChemical industryAlkalinity
The invention relates to a corrosion-inhibition anti-scale dispersing agent including the components in parts by mass: 70-100 parts of water, 21-40 parts of sodium alkyl benzene sulfonate, 20-25 parts of sodium tripolyphosphate, 30-50 parts of chlorofluorocarbon, 5-15 parts of trichloroethane, 3-6 parts of an essence, and 10-20 parts of liquid citric acid. The involved corrosion-inhibition anti-scale dispersing agent is widely applied for preventing scale formation for circulating cooling water systems, oilfield water injection systems and thermal power plant ash conveying pipe ash-water systems in chemical industry, power plants, metallurgy, petroleum, machinery, textile, various boilers, central air conditioners, cooling water and other industries, is especially suitable for scale inhibition and corrosion prevention for high-temperature and high-alkalinity circulating water systems, and stabilizes effectively scaling ions in cooling water.
Owner:储顺庆
A molybdenum phosphide catalyst used for gas phase selective hydrodechlorination for preparing 2,3,3,3-tetrafluoropropene
ActiveCN109967103ALow costGood anti-sintering ability at high temperaturePreparation by hydrogen halide split-offMolecular sieve catalystsGas phaseReaction temperature
A molybdenum phosphide catalyst used for gas phase selective hydrodechlorination of 2-chloro-1,1,1,2-tetrafluoro propane to prepare 2,3,3,3-tetrafluoropropene, in order to solve a problem that traditional chlorofluorocarbon hydrodechlorination catalysts are high in cost and liable to deactivate. The catalyst includes bulk phase MoP or MoP / carrier, wherein the active component MoP is formed by combining metal molybdenum and non-metal element phosphorus to form the molybdenum phosphide covalent compound having a crystal structure, the MoP is subjected to surface modification through a sulfuration manner to obtain the compound. The catalyst has advantages of excellent performance, high activity, good stability, low reaction temperature, capability of effectively reducing reaction energy consumption, and industrial application value.
Owner:XIAN MODERN CHEM RES INST
Synthesis method of pyridylacetonitrile
InactiveCN102838531AEasy to operateMild reaction conditionsOrganic chemistrySynthesis methodsPotassium cyanide
The invention provides a preparation method of a pyridylacetonitrile compound, which comprises the following steps: (1) by using pyridylformic acid and CFC (chlorofluorocarbon) as raw materials, reacting with hydrogen peroxide and ferrous chloride in a chloroform solvent under acidic conditions to obtain pyridinecarbonyl chloride; (2) reacting with potassium cyanide in an acetic acid solvent under alkaline conditions to obtain pyridinecarbonyl nitrile; and (3) carrying out reduction reaction with hydrogen and hydrochloric acid under the action of a catalyst to obtain the pyridylacetonitrile. The invention has the advantages of simple synthesis technique and high recovery rate.
Owner:ANHUI XINGYU CHEM
Insecticidal composition containing clothianidin and chlorofluorocarbon cyantraniliprole
InactiveCN104430475ADelay drug resistanceExtended service lifeBiocideAnimal repellantsClothianidinHomoptera
The invention discloses an insecticidal composition containing two active ingredients. The insecticidal composition contains the two active ingredients, namely clothianidin and 3-chloro-N1-(2-methyl-4-heptafluoroisopropyl phenyl)-N2-(1-methyl-1-cyanoethyl) phthalimide which are in the mass ratio of (1-50): (20-1). The insecticidal composition disclosed by the invention is applicable to the prevention and treatment of homoptera pests and lepidoptera pests.
Owner:ZHEJIANG RES INST OF CHEM IND CO LTD +1
Insecticidal composition containing spirotetramat and chlorofluorocarbon cyantraniliprole
InactiveCN104430415ADelay drug resistanceExtended service lifeBiocideAnimal repellantsHomopteraOrder Lepidoptera
The invention discloses an insecticidal composition containing two active ingredients. The insecticidal composition contains the two active ingredients, namely spirotetramat and 3-chloro-N1-(2-methyl-4-heptafluoroisopropyl phenyl)-N2-(1-methyl-1-cyanoethyl) phthalimide which are in the mass ratio of (1-50): (20-1). The insecticidal composition disclosed by the invention is applicable to the prevention and treatment of homoptera pests and lepidoptera pests.
Owner:ZHEJIANG RES INST OF CHEM IND CO LTD +1
Rigid foam polyurethane material with integration of heat preservation, water resistance and thermal insulation
The invention discloses a rigid foam polyurethane material with integration of heat preservation, water resistance and thermal insulation. The rigid foam polyurethane material with integration of heat preservation, water resistance and thermal insulation is prepared from, by weight, 70-90 parts of polyaryl polymethylene isocyanate, 20-30 parts of diphenylmethane diisocyanate, 30-50 parts of polyether polyol, 1-3 parts of antioxygen, 2-4 parts of ultraviolet light absorber, 0.8-1 part of catalyst, 1-2 parts of fire retardant, 0.6-1 part of foaming agent, 4-6 parts of dimethylsilicone fluid and 12-18 parts of deionized water. The rigid foam polyurethane material with the integration of heat preservation, water resistance and thermal insulation can be applied to multiple fields of water resistance, heat preservation and thermal insulation of high-floor buildings or accessible roofs or roof gardens, repair and transformation of old buildings, and waterproof and heat-preservation engineering of various buildings of pools, swimming pools and the like, has the advantages of high strength, low weight, water resistance, heat preservation, a good thermal insulation effect, good wear resistance and corrosion prevention and the like, and further has an efficient fire retardant ability; moreover, a chlorofluorocarbon (CFC) foaming agent is not used, so that the material saves energy and is environmentally friendly.
Owner:GUANGXI JISHUN ENERGY TECH
Polyurethane insulation material
The invention discloses a polyurethane insulation material, prepared from, by weight, 60-80 parts of diphenylmethane diisocyanate, 40-60 parts of plant fiber-based polyether polyol, 30-50 parts of plant oil-based polyether polyol, 1-3 parts of a catalyst, 1-3 parts of an organic flame retardant, 0.5-1 part of a foaming agent, 1-3 parts of silicone oil, and 6-8 parts of deionized water. The polyurethane insulation material has the advantages of high strength, light weight, low heat conductivity, good size stability, good thermal insulation, and good wear resistance and corrosion resistance; the polyurethane insulation material also has efficient flame retardancy and is energy-efficient and environment-friendly due to the absence of chlorofluorocarbon (CFC) foaming agent; in addition, a preparation method is simple, the cost is low, equipment requirements are low, and the production process is environment-friendly.
Owner:胡国旺
Integrated treatment system for composite waste gas comprising nitrogen oxides, chlorofluorocarbons, hydrochlorofluorocarbons, hydrofluorocarbons, and perfluorinated compounds
Provided is an integrated treatment system for composite waste gas comprising nitrogen oxides (NOx and N2O), chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HFCs), and perfluorinated compounds (PFCs). The integrated treatment system comprises: a first wet treatment apparatus for washing and adsorption-treating a gas to be dissolved in water, SOx and dust includingash; a decomposition reactor for receiving the waste gas treated by the first wet treatment apparatus and treating nitrogen oxides, CFCs, HCFCs, HFCs and PFCs; and a second wet treatment apparatus for receiving the waste gas treated in the decomposition reactor and washing and adsorption-treating the same. The system can effectively treat a large amount of composite waste gas.
Owner:YIKE ENVIRONMENTAL TECH HN CO LTD
Fluorine-free polyurethane heat insulation material
The invention discloses a fluorine-free polyurethane heat insulation material. The fluorine-free polyurethane heat insulation material is prepared through foaming the following raw materials: by weight, 60-80 parts of toluene diisocyanate, 40-60 parts of polyether polyol A, 20-30 parts of polyether polyol B, 1-3 parts of a catalyst, 1-3 parts of a fire retardant, 0.5-1 part of a foaming agent, 4-8 parts of silicone oil and 12-18 parts of deionized water. The fluorine-free polyurethane heat insulation material has the advantages of high strength, light mass, low heat conductivity, good dimension stability, good heat insulation effect, good wear and corrosion resistance, high-efficiency fire retardation ability, and realization of energy saving and environmental protection due to no use of a chlorofluorocarbon (CFC) foaming gent and use of cyclopentane as the foaming agent. A preparation method of the fluorine-free polyurethane heat insulation material has the advantages of simplicity, low cost, low device requirements, environmentally-friendly production process, easiness in industrial production, and suitableness for large-scale promotion and application.
Owner:NANNING KEYU ENERGY TECH CO LTD
Non-flammable cleaner composition
InactiveCN101835884AImprove reliabilityWill not corrodeDetergent mixture composition preparationOrganic non-surface-active detergent compositionsSolventTert-Butyl bromide
A bromine-containing solvent, which has been used as an alternative solvent to a chlorofluorocarbon solvent or a chlorine-containing solvent, is characterized in that it is likely to degrade compared with a chlorofluorocarbon solvent or a chlorine-containing solvent. In the conventional bromine-containing cleaner compositions, the degradation of the compositions are prevented by using a corrosion-protecting agent or a stabilizing agent (e.g., nitroethane). However, when the cleaner compositions are used as cleaners for print circuit boards, the reduction in insulation resistance or leak failure is often caused. Thus, provided is a non-flammable cleaner composition comprising a mixture of a bromide selected from n-propylbromide, methylenebromide, bromochloromethane, n-butylbromide, isobutylbromide, sec-butylbromide and ter-butylbromide as a stabilizer for a bromine-containing solvent and an alkene- or alkyne-type hydrocarbon having 4 to 10 carbon atoms.
Owner:SENJU METAL IND CO LTD +1
Non-flammable cleaner composition
InactiveCN101835884BImprove reliabilityWill not corrodeDetergent mixture composition preparationOrganic non-surface-active detergent compositionsSolventTert-Butyl bromide
A bromine-containing solvent, which has been used as an alternative solvent to a chlorofluorocarbon solvent or a chlorine-containing solvent, is characterized in that it is likely to degrade compared with a chlorofluorocarbon solvent or a chlorine-containing solvent. In the conventional bromine-containing cleaner compositions, the degradation of the compositions are prevented by using a corrosion-protecting agent or a stabilizing agent (e.g., nitroethane). However, when the cleaner compositions are used as cleaners for print circuit boards, the reduction in insulation resistance or leak failure is often caused. Thus, provided is a non-flammable cleaner composition comprising a mixture of a bromide selected from n-propylbromide, methylenebromide, bromochloromethane, n-butylbromide, isobutylbromide, sec-butylbromide and ter-butylbromide as a stabilizer for a bromine-containing solvent and an alkene- or alkyne-type hydrocarbon having 4 to 10 carbon atoms.
Owner:SENJU METAL IND CO LTD +1
Process for the removal of contaminant from a hydrochlorofluoroolefin by extractive distillation
ActiveUS9284241B2Organic chemistry methodsHalogenated hydrocarbon preparationExtractive distillationFractionating column
A method for removing a contaminant from a hydrochlorofluoroolefin (such as trans-1,1,1-trifluoro-3-chloro-2-propene (1233zd(E))) includes extracting a chlorofluorocarbon (such as trichlorofluoromethane (R11)) from a mixture comprising the hydrochlorofluoroolefin and the chlorofluorocarbon using extractive distillation in the presence of an extractive solvent comprising a chlorinated compound to form a purified hydrochlorofluoroolefin. This separation method provides for removal of a contaminant, such as R11, from a hydrochlorofluoroolefin, such as 1232zd(E), which are not separable by conventional distillation methods. The method may employ a process utilizing two distillation columns, for example, a first extractive distillation column and a second solvent recovery column, which allows for recycle of the extractive solvent to the first extractive distillation column.
Owner:ARKEMA INC
Catalyst for preparation of 2,3,3,3-tetrafluoropropene through selective hydrodechlorination
ActiveCN109999864ALow costGood anti-sintering ability at high temperaturePreparation by hydrogen halide split-offPhysical/chemical process catalystsActive componentReaction temperature
The invention discloses a catalyst for preparation of 2,3,3,3-tetrafluoropropene through hydrodechlorination. The problem of high cost and easy deactivation of a traditional chlorofluorocarbon hydrodechlorination catalyst are solved. The catalyst has the characteristics that the catalyst is composed of an active component and a carrier, wherein the active component is MxPy, and MxPy is one or combination of more of PdP, Co2P, CoP and FeP. The catalyst has excellent performance, high activity, good stability and low reaction temperature, the reaction energy consumption can be reduced effectively, and an industrial application value is achieved.
Owner:XIAN MODERN CHEM RES INST
Stabilized hydrochlorofluoroolefins and hydrofluoroolefins
ActiveUS9523026B2Low ozone depletionLower global warming potentialOrganic chemistryOther chemical processesScavengerOzone depletion potential
Disclosed is a combination of hydrofluoroolefins and / or hydrochlorofluoroolefins with stabilizers wherein the stabilizers minimize the degradation of the hydrofluoroolefins and hydrochlorofluoroolefins during storage, handling and use yet allow for atmospheric degradation. The combinations exhibit low or zero ozone depletion potential and lower global warming potential making them of interest as replacements for chlorofluorocarbons and hydrofluorocarbons. The combinations of the present invention comprise hydrofluoroolefins and / or hydrochlorofluoroolefins in combination with a stabilizer or stabilizers selected from free radical scavengers, acid scavengers, oxygen scavengers, polymerization inhibitors and combinations thereof.
Owner:ARKEMA INC
Water foaming inorganic hybrid melamine polyurethane rigid foam material and manufacturing method thereof
Owner:CHANGZHOU JUMBO ENERGY SAVING TECH CO LTD
Method for preparing fluorinated alkene by performing dehydrochlorination on chlorofluorocarbon under action of catalyst
ActiveCN103420782BLow purity requirementLow running costPreparation by hydrogen halide split-offMetal/metal-oxides/metal-hydroxide catalystsHalohydrocarbonGas phase
The invention belongs to the field of refrigerant, and provides a method for preparing fluorinated alkene by performing dehydrochlorination on chlorofluorocarbon under the action of a catalyst.According to the invention, the novel catalyst is prepared through an impregnation method, reaction of the catalyst and 2-chloro-l, 1, 2-tetrafluoro propane (HCFC-244bb) with lower purity is performed, and then high-temperature gas phase dehydrochlorination reaction is performed to prepare a fluorinated alkene product 2, 3, 3, 3-tetrafluoro propene. Through the adoption of the novel catalyst, the purity requirement on chlorofluoropropane is reduced, so that HCFC-244bb with the purity of 80 percent can be as a raw material, thereby effectively reducing the operating cost of the process; the halohydrocarbon conversion rate is high, and reach up to 60 percent, and the selectivity of the target fluorinated alkene is greater than 90 percent.
Owner:山东华安近代环保科技有限公司
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