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475 results about "Hydrofluorocarbon" patented technology
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Hydrofluorocarbons (HFCs) are organic compounds that contain fluorine and hydrogen atoms, and are the most common type of organofluorine compounds. They are frequently used in air conditioning and as refrigerants in place of the older chlorofluorocarbons such as R-12 and hydrochlorofluorocarbons such as R-21. They do not harm the ozone layer as much as the compounds they replace, but they do contribute to global warming, with thousands of times the warming potential of carbon dioxide. Their atmospheric concentrations and contribution to anthropogenic greenhouse gas emissions are rapidly increasing, causing international concern about their radiative forcing.
Processes for production and purification of hydrofluoroolefins
ActiveUS20060106263A1High selectivityPreparation by hydrogen halide split-offHydrogen fluorideHydrogen fluoridePurification methods
Owner:THE CHEMOURS CO FC LLC
Selective etching of carbon-doped low-k dielectrics
InactiveUS20050026430A1High selectivityReducing micro-loadingDecorative surface effectsVacuum evaporation coatingPlasma etchingChemistry
The present invention includes a process for selectively etching a low-k dielectric material formed on a substrate using a plasma of a gas mixture in a plasma etch chamber. The gas mixture comprises a fluorine-rich fluorocarbon or hydrofluorocarbon gas, a nitrogen-containing gas, and one or more additive gases, such as a hydrogen-rich hydrofluorocarbon gas, an inert gas and / or a carbon-oxygen gas. The process provides a low-k dielectric to a photoresist mask etching selectivity ratio greater than about 5:1, a low-k dielectric to a barrier / liner layer etching selectivity ratio greater about 10:1, and a low-k dielectric etch rate higher than about 4000 Å / min.
Owner:APPLIED MATERIALS INC
Process for manufacture of fluorinated olefins
A process for the production of fluorinated olefins, preferably fluorinated propenes, by contacting a feed stream containing a fluorinated olefin and hydrogen with a first amount of catalyst to produce the hydrofluorocarbon, wherein a first exit stream contains unreacted fluorinated olefin and hydrogen; contacting the first exit stream with a second amount of catalyst to produce a hydrofluorocarbon, wherein the second amount of catalyst is preferably greater than the first amount of catalyst; and contacting the hydrofluorocarbon with a catalyst for dehydrohalogenation to produce a product stream of fluorinated olefin.
Owner:HONEYWELL INT INC
Heat transfer compositions of hydrofluorocarbons and a hydrofluoroolefin
The present invention relates to heat transfer compositions comprising 2,3,3,3-tetrafluoropropene, difluoromethane, pentafluoroethane, and 1,1,1,2-tetrafluoroethane for use in refrigeration, air-conditioning, heat pump systems, and other heat transfer applications. The inventive heat transfer compositions can possess reduced global warming potential while providing good capacity and performance.
Owner:ARKEMA INC
Polymerization processes
Owner:EXXONMOBIL CHEM PAT INC
Transdermal aerosol compositions
InactiveUS20050186141A1Overcome disadvantagesCosmetic preparationsToilet preparationsMedicineActive agent
The present invention provides a pharmaceutical composition for transdermal delivery comprising: one or more physiologically active agents; one or more dermal penetration enhancers; a pharmaceutically acceptable carrier comprising a volatile solvent; and a hydrofluorocarbon propellent; wherein the carrier and penetration enhancers combine to provide a single-phase solution of the one or more physiologically active agents.
Owner:ACRUX DDS
Process for manufacture of fluorinated olefins
A process for the production of fluorinated olefins, preferably fluorinated propenes, by contacting a feed stream containing a fluorinated olefin and hydrogen with a first amount of catalyst to produce the hydrofluorocarbon, wherein a first exit stream contains unreacted fluorinated olefin and hydrogen; contacting the first exit stream with a second amount of catalyst to produce a hydrofluorocarbon, wherein the second amount of catalyst is preferably greater than the first amount of catalyst; and contacting the hydrofluorocarbon with a catalyst for dehydrohalogenation to produce a product stream of fluorinated olefin.
Owner:HONEYWELL INT INC
Azeotropic compositions comprising fluorinated compounds for cleaning applications
InactiveUS20070203046A1Other chemical processesDetergent mixture composition preparationAlcoholCompound (substance)
The present invention relates to compositions comprising fluorinated olefins or fluorinated ketones, and at least one alcohol, halocarbon, hydrofluorocarbon, or fluoroether and combinations thereof. In one embodiment, these compositions are azeotropic or azeotrope-like. In another emebodiment, these compositions are useful in cleaning applications as a degreasing agent or defluxing agent for removing oils and / or other residues from a surface.
Owner:EI DU PONT DE NEMOURS & CO
Heat pipes incorporating microchannel heat exchangers
A heat pipe can include a microchannel heat exchanger at the heat absorbing end and another heat exchanger which is optionally also a microchannel heat exchanger at the heat sink end, with one or more pipes flowably connecting the two ends for transporting liquid working fluid to the head absorber and vaporized working fluid to the heat sink. The heat pipes may be used to cool electronic devices with rejection of heat outside an enclosure, and optionally outside a room, containing the electronic devices. The heat pipes may be used to cool photovoltaic or solar collection devices with rejection of heat to ambient air at a distance removed from the photovoltaic devices. Heat pipe systems are disclosed wherein the working fluid is a hydrofluorocarbon or a mono-chlorinated hydrofluoroalkene having a normal boiling point in a range from 10° C. to 80° C.
Owner:QCIP HLDG
Method and apparatus for abatement of reaction products from a vacuum processing chamber
InactiveUS6888040B1Increase plasma densityHigh operating requirementsGas treatmentUsing liquid separation agentHydrofluorocarbonReaction chamber
An exemplary method and apparatus for abating reaction products from a vacuum processing chamber includes a reaction chamber in fluid communication with the vacuum processing chamber, a coil disposed about the reaction chamber, and a power source for supplying RF energy to the coil. The coil creates a plasma in the reaction chamber which effectively breaks down stable reaction products from the vacuum processing chamber such as perfluorocarbons (PFCs) and hydrofluorocarbons (HFCs) which significantly contribute to global warming. According to alternative embodiments, the plasma may be generated with grids or coils disposed in the reaction chamber perpendicular to the flow of reaction products from the vacuum processing chamber.
Owner:LAM RES CORP
Working medium for heat cycle, composition for heat cycle system, and heat cycle system
InactiveCN106414654AImprove stabilityInhibition of the effects of global warmingCompressorCompression machines with non-reversible cycleEngineeringDouble bond
Provided are: a working medium for a heat cycle, said working medium containing 1,2-difluoroethylene and exhibiting high stability, reduced environmental impact, and cycle performance that can replace that of R410A (a pseudo-azeotropic mixed refrigerant including difluoromethane and pentafluoroethane at a mass ratio of 1:1) and 1,1,1,2-tetrafluoroethane; a composition for heat cycle system, said composition using the medium; and a heat cycle system using the composition. The working medium for a heat cycle is characterized by the inclusion of 1,2-difluoroethylene and at least two types of hydrofluorocarbon selected from the group of hydrofluorocarbons that include a carbon-carbon double bond other than a saturated hydrofluorocarbon and 1,2-difluoroethylene.
Owner:ASAHI GLASS CO LTD
Working fluid for heat cycle, composition for heat cycle system, and heat cycle system
InactiveUS20170058173A1Improve stabilityCycle performance sufficientCompressorCompression machines with non-reversible cycleWorking fluidMetal working fluid
To provide a working fluid for heat cycle containing 1,2-difluoroethylene, which has high stability, and which has cycle performance sufficient as an alternative to R410A (a pseudoazeotropic mixture refrigerant of difluoromethane and pentafluoroethane in a mass ratio of 1:1) or 1,1,1,2-tetrafluoroethane while the influence over global warming is suppressed, a composition for a heat cycle system comprising it, and a heat cycle system employing the composition.A working fluid for heat cycle, which contains at least two members selected from a saturated hydrofluorocarbon and a hydrofluorocarbon having a carbon-carbon double bond other than 1,2-difluoroethylene, and 1,2-difluoroethylene.
Owner:ASAHI GLASS CO LTD
Utilizing ionic liquids for hydrofluorocarbon separation
InactiveUS20070131535A1Organic compounds purification/separation/stabilisationGroup 5/15 element organic compoundsPhysical chemistryOrganic chemistry
The present invention relates to a process for separating close-boiling and azeotropic components of mixtures, wherein said mixtures comprise at least one hydrofluorocarbon compound, using at least one ionic liquid.
Owner:THE CHEMOURS CO FC LLC
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
Biodegradable foams with improved dimensional stability
InactiveUS20120225961A1Good dimensional stabilityLow densityOther chemical processesTransportation and packagingHydrofluoroetherLow density
The invention provides a blowing agent composition and method of making the same comprising mixing carbon dioxide and a co-blowing agent or a blowing agent selected from the group consisting of hydrofluorocarbons, hydrochlorofluorocarbons, hydrofluoroethers, hydrofluoroolefms, hydrochlorofluoroolefms, hydrobromofluoroolefms, hydrofluoroketones, hydrochloroolefins, fluoroiodocarbons, alkyl esters, water, and mixtures thereof. Also provided is a method of making a low density foam using the blowing agent composition, and a biodegradable or biorenewable foam formed from a foamable biodegradable or biorenewable resin composition and the blowing agent composition.
Owner:ARKEMA INC
Method for the production of particles
InactiveUS7404828B1Powder deliveryOrganic compounds purification/separation/stabilisationPlastic materialsHigh pressure
A method of preparing particles of a substance, for example selected from a flavor, fragrance, pigment, dye, biologically active compound or a plastics material, comprises contacting the substance of a formulation (which may include the substance in conjunction with a second solvent) with a first solvent which comprises a C1-C4 hydrofluorocarbon, especially tetrafluoroethane, and subjecting the resultant mixture to a separation process, for example, by allowing the mixture to be sprayed as a mist (14) from a high pressure environment in a first vessel (2) to a low pressure environment in a second vessel (8), thereby to cause separation of a least some of the substance from the first solvent and the formation of fine particles (20) of the substance.
Owner:GLAXO GROUP 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
Halogenated polymers with new sequence distributions
The invention relates to new polymerization processes including diluents including hydrofluorocarbons and their use to produce novel halogenated polymers with new sequence distributions. In particular, the invention relates to halogenated copolymers of an isoolefin, preferably isobutylene, and a multiolefin, preferably a conjugated diene, more preferably isoprene, with new sequence distributions.
Owner:EXXONMOBIL CHEM PAT INC
Phase separation process utilizing a hydrofluorocarbon
ActiveUS20070299161A1Easy to appreciateSpecial tyresMultistage water/sewage treatmentHydrocarbon solventsPhase separation process
Provided for herein is a process for separating a hydrocarbon-rubber from a hydrofluorocarbon diluent comprising contacting a polymer slurry comprising the hydrocarbon-rubber dispersed within the hydrofluorocarbon diluent with a hydrocarbon solvent capable of dissolving the hydrocarbon-rubber, to produce a first liquid phase and a second liquid phase, and separating the first liquid phase from the second liquid phase.
Owner:EXXONMOBIL CHEM PAT INC
Hydrofluorocarbon refrigerant compositions and uses thereof
Disclosed herein are hydrofluorocarbon refrigerant or heat transfer fluid compositions that are useful in refrigerain or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor apparatus that employ two-stage compressors or single slab.single pass heat exchangers.
Owner:EI DU PONT DE NEMOURS & CO
Low temperature rankine cycle solar power system with low critical temperature hfc or hc working fluid
InactiveUS20120291433A1Reliable and cost-effective wayLong-term problemSolar heating energyAuxillary drivesThermal energyWorking fluid
This invention relates to a low temperature solar thermal power system, which combines the solar hot water collectors with the organic Rankine cycle system using the low critical temperature hydrofluorocarbons (HFC) or hydrocarbons (HC) working fluid for converting solar energy to electrical energy. This invention also relates to systems and methodology for conversion of low temperature thermal energy, wherever obtained, to electrical energy using the low critical temperature hydrofluorocarbons (HFC) or hydrocarbons (HC) working fluid for organic Rankine cycle system to drive an electrical generator or do other work in a cost effective way.
Owner:NING MENG
Fluoropropene compounds and compositions and methods using same
InactiveUS20110037016A1Reduce negative impactImprove environmental desirabilitySolvent extractionOther chemical processesHydrocotyle bowlesioidesKetone
Various uses of fluorinated olefin having an MRI value of less than ethane, in combination with one or more other components, including other fluoroalkenes, hydrocarbons; hydrofluorocarbons (HFCs), ethers, alcohols, aldehydes, ketones, methyl formate, formic acid, water, trans-1,2-dichloroethylene, carbon dioxide and combinations of any two or more of these, in a variety of applications, including as blowing agents, are disclosed.
Owner:HONEYWELL INT INC
Method of making 1,1,3,3,3-pentafluoropropene
InactiveUS20050070746A1Low costPreparation by dehalogenationPreparation by hydrogen halide split-offFoaming agentSolvent
The invention provides an economic process for the manufacture of the hydrofluorocarbon 1,1,3,3,3-pentafluoropropene (HFC-1225zc). HFC-1225zc can be made from the dehydrochlorination of 1-chloro-1,1,3,3,3-pentafluoropropane (HCFC-235fa). Alternatively, HFC-1225zc can also be made from the dehydrofluorination of 1,1,1,3,3,3-hexafluoropropane (HFC-236fa). HFC-1225zc) is a compound that has the potential to be used as a low Global Warming Potential refrigerant, blowing agent, aerosol propellant, or solvent.
Owner:HONEYWELL INT INC
Isopropyl chloride with hydrofluorocarbon or hydrofluoroether as foam blowing agents
InactiveUS6646020B2Combustibility is reduced and eliminatedReduce flammabilityHeat-exchange elementsLiquid soapsPolyisocyanurateHydrofluoroether
A composition useful as a blowing agent having no flash point or reduced combustibility comprising 2-chloropropane and a gas selected from the group consisting of a fluorohydrocarbon, perfluorocarbons, fluoroethers, hydrofluoropolyethers and mixtures thereof is disclosed. A polyisocyanurate foam or a polyurethane modified polyisocyanurate foam having a mainly closed cell structure and also a method for preparing this foam, the latter comprising closed cells wherein a foam blowing agent consisting of a mixture of 2-chloropropane and one or more HFC compounds including pentafluoropropane, pentafluorobutane, heptafluoropropane, hexafluoropropane or pentafluoroethane are disclosed. Pentanes can be added if desired. Azeotropic mixtures in which 2-chloropropane is an ingredient are disclosed.
Owner:OCCIDENTAL CHEM CORP
Measuring method for concentration of halogen and fluorine compound, measuring equipment thereof and manufacturing method of halogen compound
InactiveUS20020051132A1Safe and quick determinationAnalysing fluids using sonic/ultrasonic/infrasonic wavesMaterial analysis by electric/magnetic meansHalogenInorganic fluorine compounds
The present invention provided a method for measuring a halogen gas and / or a hydrofluorocarbon for the purpose of controlling the concentration of the halogen gas and / or the hydrofluorocarbon, in a plant producing a halogen compound or a perfluorocarbon, at a predetermined concentration level quickly, easily, and precisely for the control. The present invention provides also a measurement apparatus for the above measurement which has a compact structure, and in which the parts are exchangeable quickly and readily. The present invention provides further a process for producing a halogen compound or a perfluorocarbon employing the measurement method and the measurement apparatus. In particular, the present invention intends to provide a method for measuring safely and quickly a hydrofluorocarbon concentration in a mixed gas stream in a process of producing a perfluorocarbon by direct fluorination reaction of a hydrofluorocarbon and F2.
Owner:SHOWA DENKO KK
Tiotropium containing HFC solution formulations
This invention relates to tiotropium containing stable pharmaceutical solution formulations suitable for aerosol administration. More particularly, this invention relates to tiotropium containing stable pharmaceutical solution formulations suitable for aerosol administration wherein either an inorganic acid or an organic acid is added to the aerosol solution formulation which contains a tiotropium salt, preferably tiotropium bromide in solution with an environmentally safe hydrofluorocarbon (HFC) as a propellant, together with an organic compound as a cosolvent. The acid provides stability against degradation or decomposition of the medicament resulting largely from interaction of the medicament with the cosolvent and / or water present in the solution formulation.
Owner:BOEHRINGER INGELHEIM PHARM KG
Blowing agent compositions containing hydrofluorocarbons and a low-boiling alcohol and/or low-boiling carbonyl compound
InactiveUS6476080B2Low thermal conductivityFoam thermal conductivityOther chemical processesMixing methodsAlcoholFoaming agent
Owner:THE DOW CHEM CO
Process for production of azeotrope compositions comprising hydrofluoroolefin and hydrogen fluoride and uses of said azeotrope compositions in separation processes
ActiveUS7897823B2High selectivityPreparation by hydrogen halide split-offPreparation by halogen halide additionHydrogen fluorideHydrogen
Disclosed herein is a process to produce an azeotrope composition comprising a hydrofluoroolefin and hydrogen fluoride, said process comprising, dehydrofluorinating a hydrofluorocarbon containing at least one hydrogen and at least one fluorine on adjacent carbons, thereby forming a mixture comprising said hydrofluoroolefin, unreacted hydrofluorocarbon and hydrogen fluoride, and distilling the mixture to produce a distillate composition comprising an azeotrope composition containing said hydrofluoroolefin and hydrogen fluoride and a column bottoms composition comprising said hydrofluorocarbon essentially free of hydrogen fluoride. Also disclosed herein are processes for separation of hydrofluoroolefins from hydrofluorocarbons and from hydrogen fluoride.
Owner:THE CHEMOURS CO FC LLC
Selective etch process of a sacrificial light absorbing material (SLAM) over a dielectric material
InactiveUS20050029229A1Decorative surface effectsSemiconductor/solid-state device manufacturingHydrogenNitrogen gas
A process of selectively etching a sacrificial light absorbing material (SLAM) over a dielectric material, such as carbon doped oxide, on a substrate using a plasma of a gas mixture in a plasma etch chamber. The gas mixture comprises a hydrofluorocarbon gas, an optional hydrogen-containing gas, an optional fluorine-rich fluorocargon gas, a nitrogen gas, an oxygen gas, and an inert gas. The process could provide a SLAM to a dielectric material etching selectivity ratio greater than 10:1.
Owner:APPLIED MATERIALS INC
Polymerization processes
Owner:EXXONMOBIL CHEM PAT INC
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