Vaporization, Or Expansion, Refrigeration Or Heat Or Energy Exchange Patents (Class 252/67)
With lubricants, or warning, stabilizing or anti-corrosion agents or persistent gases (Class 252/68)
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Publication number: 20110173997Abstract: Heat transfer compositions are usable in their own right or are suitable as a replacement for existing refrigeration usages. The compositions possess a reduced Greenhouse Warming Potential, yet have a capacity and energy efficiency (which may be conveniently expressed as the “Coefficient of Performance”) ideally within 20% of the values of those attained using R-134a, and preferably within 10% or less (e.g. about 5%) of these values.Type: ApplicationFiled: March 29, 2011Publication date: July 21, 2011Applicant: MEXICHEM AMANCO HOLDING, S.A. de C.V.Inventors: ROBERT E. LOW, Stuart Corr
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Publication number: 20110175016Abstract: A process for transferring heat from a heat source to a heat sink, comprising using as heat transfer medium a composition comprising: at least one fluorinated fluid free from functional groups (fluid (H)); at least one functional (per)fluoropolyether (functional PFPE(1)) comprising recurring units (R1), said recurring units comprising at least one ether linkage in the main chain and at least one fluorine atom (fluoropolyoxyalkylene chain), and at least one functional end group chosen between —COOH and —CONH2; at least one functional (per)fluoropolyether (functional PFPE(2)) comprising recurring units (R1) as defined above and at least one functional end group chosen between —COCF3 and its hydroxylated derivative —C(OH)2CF3.Type: ApplicationFiled: September 22, 2009Publication date: July 21, 2011Applicant: SOLVAY SOLEXIS S.P.A.Inventors: Pier Antonio Guarda, Gianfranco Spataro, Padmanabhan Srinivasan, Giuseppe Marchionni
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Patent number: 7981312Abstract: A process is disclosed for making CF3CF?CH2 or mixtures thereof with CHF?CFCHF2. The process involves contacting CCl3CF2CF3 and optionally CCl2FCF2CClF2 with H2 in the presence of a palladium catalyst supported on a support of alumina, fluorided alumina and/or aluminum fluoride, to produce a product mixture including CH2?CFCF3 (and when CCl2FCF2CClF2 is present, CHF?CFCHF2); recovering CH2?CFCF3 or a mixture thereof with CHF?CFCHF2 from the product mixture. The present invention also provides another process that involves reacting CCl3CF2CF3 and optionally CCl2FCF2CClF2 with H2 in the presence of a hydrogenation catalyst to form CH3CF2CF3 (and when CCl2FCF2CClF2 is present, CH2FCF2CHF2); dehydrofluorinating; and recovering CH2?CFCF3 or a mixture thereof with CHF?CFCHF2.Type: GrantFiled: October 31, 2007Date of Patent: July 19, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Mario Joseph Nappa, Velliyur Mallikarjuna Nott Rao, Allen Capron Sievert
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Patent number: 7981311Abstract: Halocarbons of the structure CF3CF2CH2X, wherein X is either F or Cl or mixtures thereof prepared by: contacting at least one 2-fluorochloropropane with hydrogen fluoride in a first fluorination step in the gas phase or liquid phase under substantially anhydrous conditions, in the absence of added catalyst to partially fluorinate said 2-fluorochloropropane; contacting said partially fluorinated 2-fluorochloropropane with at least the stoichiometric molar equivalent of hydrogen fluoride under substantially anhydrous conditions, in the presence of at least one fluorination catalyst in a second fluorination step; removing said reaction products from contact with said catalyst, and isolating a substantial yield of at least 1,1,1,2,2,3-hexafluoropropane or 1,1,1,2,2,penta-3-chloropropane, or mixtures thereof, respectively.Type: GrantFiled: September 5, 2007Date of Patent: July 19, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Mario Joseph Nappa, Velliyur Nott Mallikarjuna Rao, Allen Capron Sievert, Jeffrey P. Knapp
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Publication number: 20110167844Abstract: In general terms, this disclosure is directed towards a vapor recovery system. The vapor recovery system comprises material specifically designed to recondense vapor during defrost cycle. This material would be of sufficient thermal mass to remain at a lower temperature during the defrost cycle. The vapor may be condensed directly in the evaporator compartment or indirectly by removing the vapor to a remotely located recondense medium. The vapor recovery system may comprise of at least one vapor tube, a fan, and a vapor recondenser. The vapor collection tube is located proximate an evaporator. The fan is in fluid communication with the vapor collection tube and the vapor recondenser.Type: ApplicationFiled: January 8, 2010Publication date: July 14, 2011Inventor: Sean Edward Drury
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Publication number: 20110167837Abstract: What are described are magnetocaloric materials of the general formula (MnxFe1?x)2+zP1?ySiy where 0.55?x<1 0.4?y?0.8 ?0.1?z?0.1.Type: ApplicationFiled: January 4, 2011Publication date: July 14, 2011Applicant: BASF SEInventors: Bennie REESINK, Ekkehard Brueck, Huu Dung Nguyen, Lian Zhang
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Publication number: 20110168940Abstract: The present invention discloses a composition for enhancing evaporation of a solution and a method thereof. A far-infrared ray is released by a far-infrared releasing substance in the composition so as to induce evaporation of the solution. The far-infrared releasing substance may be ceramic minerals and mainly comprises 80˜99.9 wt % of oxide minerals including 60˜95 wt % of the aluminum oxide. The present invention can enhance evaporation of the solution by a simple physical method. Hence, the present invention not only promotes the application of the products but also reduces the pollutants generated by a chemical reaction, thereby achieving the object of protecting the environment from the pollution.Type: ApplicationFiled: February 23, 2010Publication date: July 14, 2011Applicants: NATIONAL APPLIED RESEARCH LABORATORIES, TAIPEI MEDICAL UNIVERSITYInventors: YUNG-SHENG LIN, TING-KAI LEUNG, CHIEN-CHUNG CHEN, JIANN-SHIUN KAO
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Patent number: 7976721Abstract: To provide a safe, nontoxic, and high-performance mixed refrigerant for hot water supply/heating system which is prepared by mixing dimethyl ether with carbon dioxide and which does not deplete the ozone layer, has a low global warming potential, and permits low-pressure operation. A refrigerant composition for hot water supply/heating comprising 1 to 10% by mole of dimethyl ether and 99 to 90% by mole of carbon dioxide on the basis of the total number of moles of dimethyl ether and carbon dioxide.Type: GrantFiled: September 7, 2010Date of Patent: July 12, 2011Assignees: Japan Petroleum Exploration Co., Ltd., Showa Tansan Co., Ltd., Toyota Tsusho CorporationInventors: Seijyuro Maiya, Osamu Nakagome, Hideyuki Suzuki, Yasuhisa Kotani, Toshifumi Hatanaka, Toshihiro Wada
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Publication number: 20110162410Abstract: A heat transfer composition comprising trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)), carbon dioxide (R-744) and a third component selected from difluoromethane (R-32), 1,1-difluoroethane (R-152a), fluoroethane (R-161), 1,1,1,2-tetrafluoroethane (R-134a), propylene, propane and mixtures thereof.Type: ApplicationFiled: January 12, 2011Publication date: July 7, 2011Applicant: Mexichem Amanco Holding S.A. de C.V.Inventor: ROBERT E. LOW
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Publication number: 20110163253Abstract: A process for making CHF?CFCF3 is disclosed. The process involves (a) reacting CCl2FCF2CF3 with H2 in the presence of a catalytically effective amount of hydrogenation catalyst to form CH2FCF2CF3; and (b) dehydrofluorinating CH2FCF2CF3 from (a) to form CHF?CFCF3. Also disclosed are compositions including CCl3CF2CF3 and HF, wherein the HF is present in an effective amount to form an azeotropic combination with the CCl3CF2CF3; and compositions including CCl2FCF2CF3 and HF, wherein the HF is present in an effective amount to form an azeotropic combination with the CCl2FCF2CF3.Type: ApplicationFiled: March 14, 2011Publication date: July 7, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventor: ALLEN CAPRON SIEVERT
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Publication number: 20110163117Abstract: An apparatus and method wherein potential ozone layer-damaging chlorodifluoromethane (Refrigerant R-22) is substituted with a mix of less environmentally damaging refrigerants pentafluoroethane and tetrafluoroethane in chlorodifluoromethane-based air-cooling systems mainly in residential cooling. While less environmentally damaging than chlorodifluoromethane, the substitute refrigerant has a temperature-pressure relationship similar to that of chlorodifluoromethane, making the substitute refrigerant suitable for use with chlorodifluoromethane-based air-cooling systems. In this event, it is mixed with a relatively small percentage of a lubricating oil which is compatible with both the unit refrigerant and typical R-22 system design.Type: ApplicationFiled: December 6, 2010Publication date: July 7, 2011Inventors: Kenneth M. Ponder, Steffan Thomas, JR.
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Patent number: 7972525Abstract: Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of E-1,1,1,4,4,4-hexafluoro-2-butene with methyl formate, n-pentane, 2-methylbutane, trans-1,2-dichloroethylene, 1,1,1,3,3-pentafluoropropane, n-butane or isobutane. Also disclosed is a process of preparing a thermoplastic or thermoset foam by using such azeotropic or azeotrope-like compositions as blowing agents. Also disclosed is a process of producing refrigeration by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as solvents. Also disclosed is a process of producing an aerosol product by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as heat transfer media. Also disclosed is a process of extinguishing or suppressing a fire by using such azeotropic or azeotrope-like compositions.Type: GrantFiled: June 12, 2008Date of Patent: July 5, 2011Assignee: E. I. du Pont de Nemours and CompanyInventor: Mark L. Robin
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Patent number: 7972529Abstract: A lubricant oil for a refrigeration machine, and refrigeration machine, said refrigeration machine being of the type that operates with a refrigerant consisting of at least one component of the HC (hydrocarbon) group, the lubricant oil consisting of an alkylbenzene oil containing at least 80% by weight of alkylbenzene having a molecular weight of 120-288 and having a viscosity between about 3.0 and 7.0 cSt at a temperature of 40° C. and the lubricant composition consisting of said alkylbenzene oil and until about 8% by weight of one or more additives selected from a group consisting of improvers of oxidation resistance and thermal stability, corrosion inhibitors, metal inactivators, lubricity additives, viscosity index improvers, reducers of fluidity and flocculation point, detergents, dispersants, antifoaming agents, antiwear agents and extreme pressure resistant additives.Type: GrantFiled: June 8, 2010Date of Patent: July 5, 2011Assignee: Whirlpool S.A.Inventor: Rosangela Maria Machado
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Patent number: 7972528Abstract: A refrigerant composition consists essentially of three hydrofluorocarbon components selected from HFC134a, HFC125 and HFC143a and an additive selected from a saturated or unsaturated hydrocarbon or mixture thereof boiling in the range ?50° C. and +40° C.Type: GrantFiled: March 5, 2007Date of Patent: July 5, 2011Assignee: RPL Holdings LimitedInventors: John Edward Poole, Richard Powell
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Patent number: 7972524Abstract: Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of Z-1,1,1,4,4,4-hexafluoro-2-butene with methyl formate, pentane, 2-methylbutane, 1,1,1,3,3-pentafluorobutane, trans-1,2-dichloroethylene, 1,1,1,3,3-pentafluoropropane, dimethoxymethane, or cyclopentane. Also disclosed is a process of preparing a thermoplastic or thermoset foam by using such azeotropic or azeotrope-like compositions as blowing agents. Also disclosed is a process of producing refrigeration by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as solvents. Also disclosed is a process of producing an aerosol product by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as heat transfer media.Type: GrantFiled: April 28, 2008Date of Patent: July 5, 2011Assignee: E. I. du Pont de Nemours and CompanyInventor: Mark L. Robin
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Publication number: 20110160500Abstract: The present invention provides a process for producing 2,3,3,3-tetrafluoropropene, comprising distilling a mixture of water and 2,3,3,3-tetrafluoropropene to separate the mixture into a first stream and a second stream, the first stream containing 2,3,3,3-tetrafluoropropene with a water content higher than the original mixture, and the second stream containing 2,3,3,3-tetrafluoropropene with a water content lower than the original mixture; and obtaining 2,3,3,3-tetrafluoropropene with a reduced water content from the second stream. The process of the invention can efficiently remove water from 2,3,3,3-tetrafluoropropene (HFO-1234yf).Type: ApplicationFiled: August 21, 2009Publication date: June 30, 2011Inventor: Kazuhiro Takahashi
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Publication number: 20110154832Abstract: Provided is a method that includes providing a granular first material (e.g., a magnetocaloric material) and a sinterable second material. The granular first material and the sinterable second material can be combined to form an aggregate. Once the aggregate has been formed, localized sintering of the aggregate can be performed, for example, such that, subsequent to localized sintering, the second material is substantially contiguous and binds the granular first material. Associated compositions and systems are also provided.Type: ApplicationFiled: December 29, 2009Publication date: June 30, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Jayeshkumar Jayanarayan Barve, Sudhakar Eddula Reddy, Chandrasekhar Samiappan, Duraiswamy Srinivasan, Francis Johnson, Atanu Saha
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Publication number: 20110155942Abstract: The invention is directed to a process for preparing 2,2,2,3-tetrafluoropropene (1234yf), comprising: (i) contacting 1,1,2,3-tetrachloropropene (1230xa) with hydrogen fluoride HF in gas phase in the presence of a fluorination catalyst under conditions sufficient to produce a reaction mixture; (ii) separating the reaction mixture into a first stream comprising HCl, 2,2,2,3-tetrafluoropropene (1234yf) and a second stream comprising HF, 2-chloro-3,3,3-trifluoro-1-propene (1233xf) and 1,1,1,2,2-pentafluoropropane (245cb); (iii) recycling at least a part of the second stream at least in part back to step (i).Type: ApplicationFiled: December 23, 2010Publication date: June 30, 2011Applicant: Arkema FranceInventors: Anne Pigamo, Dominique Deur-Bert, Laurent Wendlinger
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Publication number: 20110147638Abstract: Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of Z-1,1,1,4,4,4-hexafluoro-2-butene, trans-1,2-dichloroethylene and a third component. Also disclosed are compositions where the third component is cyclopentane, methanol, dimethyoxymethane, methyl formate or perfluoro ethyl isopropyl ketone. Also disclosed is a process of preparing a thermoplastic or thermoset foam by using such azeotropic or azeotrope-like compositions as blowing agents. Also disclosed is a process of producing refrigeration by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as solvents. Also disclosed is a process of producing an aerosol product by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as heat transfer media.Type: ApplicationFiled: June 25, 2010Publication date: June 23, 2011Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: Mark L. Robin, Joan Ellen Bartelt
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Publication number: 20110139208Abstract: A nanocomposite thermoelectric material, a thermoelectric element including the nanocomposite thermoelectric material, and a thermoelectric module including the thermoelectric element are disclosed herein. The nanocomposite thermoelectric material includes highly electrically conductive nano metallic particles that are uniformly dispersed in a thermoelectric material matrix. Thus, the nanocomposite thermoelectric material has high thermoelectric performance, and thus, may be used in a wide range of thermoelectric elements and thermoelectric modules.Type: ApplicationFiled: July 9, 2010Publication date: June 16, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyu-hyoung LEE, Hyun-sik KIM, Sang-mock LEE, Eun-sung LEE, Sang-soo JEE
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Publication number: 20110144216Abstract: This invention relates to compositions, methods and systems having utility in numerous applications, and in particular, uses for compositions containing the compound cis-1,1,1,4,4,4-hexafluoro-2-butene (Z-HFO-1336mzzm), which has the following structure:Type: ApplicationFiled: December 15, 2010Publication date: June 16, 2011Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Ryan Hulse, Gary John Zyhowski, Bjorn Hofman, Dave Williams, Gary Knopeck, Robert G. Richard, Rajat S. Basu, Rajiv Ratna Singh
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Patent number: 7959825Abstract: The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a fluoroolefin and at least one other component. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents.Type: GrantFiled: June 17, 2009Date of Patent: June 14, 2011Assignee: E.I. du Pont de Nemours and CompanyInventors: Barbara Haviland Minor, Velliyur Nott Mallikarjuna Rao, Donald Bernard Bivens, Deepak Perti, Mark Steven Baunchalk
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Patent number: 7959828Abstract: This invention relates to cleaning compositions comprising unsaturated fluorinated hydrocarbons. The invention further relates to use of said cleaning compositions in methods to clean, degrease, deflux, dewater, and deposit fluorolubricant. The invention further relates to novel unsaturated fluorinated hydrocarbons and their use as cleaning compositions and in the methods listed above.Type: GrantFiled: March 1, 2010Date of Patent: June 14, 2011Assignee: E. I. Du Pont de Nemours and CompanyInventors: Mario Joseph Nappa, Melodie A. Schweitzer, Allen Capron Sievert, Ekaterina N Swearingen
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Publication number: 20110133113Abstract: The invention refers to applying carbon dioxide (CO2) solution in liquid, as working fluid in the “Malone” engines, by all possible pressures in the cool reservoir. These solutions have multiply greater coefficient of thermal expansion, by which will be avoided all defects of the till know existing engines. As a solvent can be used water and all kinds of other liquids, by which would be obtained an optimal combination between the different indicators.Type: ApplicationFiled: July 28, 2009Publication date: June 9, 2011Inventors: Marieta Pancheva, Viadimir Panchev, Adelina Suvandjieva
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Patent number: 7956128Abstract: A thermoplastic resin composition for a refrigerator according to the present invention can include (A) about 20 to about 40 parts by weight of an acrylonitrile-butadiene-styrene graft copolymer resin prepared by grafting in emulsion polymerization about 60 to about 30% by weight of a monomer mixture comprising a cyanide vinyl compound and an aromatic vinyl compound to about 40 to about 70% by weight of a rubber polymer having an average particle size of about 0.1 to about 0.4 ?m; (B) about 1 to about 20 parts by weight of a styrenic copolymer comprising (b1) about 0 to about 75% by weight of a styrenic copolymer prepared by copolymerizing about 5 to about 20% by weight of a rubber polymer having an average particle size of about 0.Type: GrantFiled: June 28, 2007Date of Patent: June 7, 2011Assignee: Cheil Industries Inc.Inventors: Kang Yeol Park, Hee Jung Park, Jae Hyung Lee
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Publication number: 20110126550Abstract: A magnetocaloric refrigerator uses as a refrigerant a magnetocaloric refrigerant material of the perovskite structure containing lanthanum and also containing Ce, Pr and Nd which may be of the general formula: LalCecPrpNdnRErAaMnXxO3?? wherein: A is at least one of the alkaline earth metals X if present is at least one metal selected from the group consisting of Co, Mn, Fe, Ni, Zn, Cu, Al, V, Ir, Mo, W, Pd, Pt, Mg, Ru, Rh, Cr and Zr, RE if present is at least one lanthanide other than La, Ce, Pr and Nd, the ratio of (l+c+p+n+r+a):(l+x) is from about 1:0.95 to about 1:1.15, the ratio of (l+c+p+n+r):(a) is from about 5:4 to about 7:2, x is from 0 to about 1:0.15, and ?1<?<1.Type: ApplicationFiled: July 6, 2009Publication date: June 2, 2011Applicant: TECHNICAL UNIVERSITY OF DENMARKInventors: Søren Linderoth, Peter Vang Henriksen, Stinus Jeppesen
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Patent number: 7943055Abstract: To provide a secondary circulation cooling system using a composition which is less influential over the environment as a secondary coolant, is non-inflammable, has a small pressure drop particularly at a low temperature and has a large heat transfer coefficient. A secondary circulation cooling system comprising a primary cooling means 1 using a primary coolant, a secondary circulation cooling means 13 using a secondary coolant and a heat exchange means 6 to carry out heat exchange between the primary coolant and the secondary coolant, characterized in that a composition comprising a fluorinated ether such as CF2HCF2OCH2CF3, and an alcohol such as ethanol, is used as the secondary coolant.Type: GrantFiled: May 21, 2007Date of Patent: May 17, 2011Assignee: Asahi Glass Company, LimitedInventor: Masato Fukushima
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Publication number: 20110108757Abstract: The present invention provides a non-flammable refrigerant, which is excellent in handleability while retaining the refrigerating capacity. Specifically, the present invention relates to a refrigerant composition comprising 36 to 50 mass % of 1,1,1,2-tetrafluoroethane (HFC134a) and 50 to 64 mass % of 2,3,3,3-tetrafluoropropene (HFO1234yf).Type: ApplicationFiled: June 30, 2009Publication date: May 12, 2011Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takashi Shibanuma, Tatsumi Tsuchiya
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Publication number: 20110108756Abstract: The present invention provides a refrigerant composition that is nonflammable, and ensures low LCCP and less burden on the environment. More specifically, the present invention relates a refrigerant composition containing difluoromethane (HFC32), pentafluoroethane (HFC125), and 2,3,3,3-tetrafluoropropene (HFO1234yf), the ratio of HFC32/HFC125/HFO1234yf being in a range surrounded by points (0/21/79 mass %), (16.6/25.3/58.1 mass %), and (0/28.4/71.6 mass %) in a ternary diagram of a refrigerant composition containing HFC32, HFC125, and HFO1234yf, and the composition essentially containing HFC32.Type: ApplicationFiled: June 30, 2009Publication date: May 12, 2011Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Tatsumi Tsuchiya, Katsuki Fujiwara, Masahiro Noguchi, Yasufu Yamada
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Publication number: 20110101264Abstract: Described is a process for separating 1,1,1,2-tetrafluoropropane and hydrogen fluoride from a mixture comprising 1,1,1,2-tetrafluoropropane, 1,1,1,2,3-pentafluoropropane and hydrogen fluoride comprising: subjecting said 1,1,1,2-tetrafluoropropane, 1,1,1,2,3-pentafluoropropane and hydrogen fluoride mixture to a distillation step, forming a column distillate composition comprising an azeotropic or near-azeotropic composition of said 1,1,1,2-tetrafluoropropane and hydrogen fluoride, and a bottoms composition of 1,1,1,2,3-pentafluoropropane. The column distillate may optionally be made essentially free of 1,1,1,2,3-pentafluoropropane and the column bottoms composition may optionally be made essentially free of HF. Also described is a process for separating 1,1,1,2-tetrafluoropropane and hydrogen fluoride from a mixture of 1,1,1,2-tetrafluoropropane and hydrogen fluoride. Also described are azeotropic and azeotrope-like compositions comprising 1,1,1,2-tetrafluoropropane and hydrogen fluoride.Type: ApplicationFiled: October 6, 2010Publication date: May 5, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventor: JEFFREY P. KNAPP
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Patent number: 7935268Abstract: An azeotrope-like mixture consisting essentially of chlorotrifluoropropene and at least one component selected from the group consisting of pentane, hexane, methanol, and trans-1,2-dichloroethene.Type: GrantFiled: October 28, 2008Date of Patent: May 3, 2011Assignee: Honeywell International Inc.Inventors: Rajat S. Basu, Kane D. Cook, Leslie Bement, Gary M. Knopeck, Rajiv R. Singh, Ryan Hulse, Hang T. Pham
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Publication number: 20110095224Abstract: The present invention relates to compositions containing hydrofluoroolefins and to the uses thereof as heat transfer fluids, blowing agents, solvents and aerosols. More particularly, the invention relates to compositions having: 5 to 65% by weight, preferably from 5 to 15% by weight, of 2,3,3,3-tetrafluoropropene, 5 to 70% by weight, preferably 40 to 60% by weight, of HFC-134a and 25 to 42% by weight of HFC-32.Type: ApplicationFiled: May 14, 2009Publication date: April 28, 2011Inventor: Wissam Rached
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Publication number: 20110088418Abstract: Disclosed herein are compositions comprising at least one ionic liquid and at least one fluoroolefin. Such compositions may be useful as absorbent/working fluid pairs in absorption cycle systems for providing cooling or heat.Type: ApplicationFiled: July 8, 2009Publication date: April 21, 2011Inventors: Konstantinos Kontomaris, Nandini C. Mouli, Mark Brandon Shiflett
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Patent number: 7927502Abstract: 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 embodiment, these compositions are useful in cleaning applications as a degreasing agent or defluxing agent for removing oils and/or other residues from a surface.Type: GrantFiled: July 22, 2010Date of Patent: April 19, 2011Assignee: E.I. du Pont de Nemours and CompanyInventors: Barbara Haviland Minor, Melodie A. Schweitzer
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Publication number: 20110084228Abstract: The present invention relates to compositions containing hydrofluoroolefins and to the uses thereof as heat transfer fluids, blowing agents, solvents and aerosols. More particularly, the invention relates to compositions having: 2 to 55% by weight, of 2,3,3,3-tetrafluoropropene, 2 to 55% by weight of HFC-152a and 30 to 55% by weight of HFC-32.Type: ApplicationFiled: May 14, 2009Publication date: April 14, 2011Applicant: Arkema FranceInventor: Wissam Rached
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Patent number: 7922930Abstract: The present invention relates to azeotropic or azeotrope-like compositions comprising a fluorinated olefin having the formula E- or Z -C3F7CH?CHC3F7, and at least one alcohol, halocarbon, hydrofluorocarbon, fluoroether, or alkanes and combinations thereof. In one embodiment, the one compound selected from the group consisting of alcohols, halocarbons, fluoroalkyl ethers, hydrofluorocarbons, alkanes is either methanol, ethanol, iso-propanol, n-propanol, trans-1,2-dichloroethylene, cis-1,2-dichloroethylene, n-propyl bromide, C4F9OCH3, C4F9OC2H5, HFC-43-10mee, HFC-365mfc, heptane, or combinations thereof. In another embodiment, these compositions are useful in cleaning applications as a degreasing agent or defluxing agent for removing oils and/or other residues from a surface.Type: GrantFiled: May 19, 2010Date of Patent: April 12, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Melodie A. Schweitzer, Allen Capron Sievert, Joan Ellen Bartelt, Barbara Haviland Minor
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Patent number: 7922931Abstract: A low-melting point, heat transfer fluid comprising a mixture of LiNO3, NaNO3, KNO3, NaNO2 and KNO2 salts where the Li, Na and K cations are present in amounts of about 20-33.5 mol % Li, about 18.6-40 mol % Na, and about 40-50.3 mol % K and where the nitrate and nitrite anions are present in amounts of about 36-50 mol % NO3, and about 50-62.5 mol % NO2. These compositions can have liquidus temperatures between 70° C. and 80° C. for some compositions.Type: GrantFiled: August 4, 2010Date of Patent: April 12, 2011Assignee: Sandia CorporationInventors: Joseph G. Cordaro, Robert W. Bradshaw
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Publication number: 20110079026Abstract: A refrigerant that is azeotropic or near-azeotropic comprises a binary blend of R744 and R41. In one embodiment the binary blend has a molar composition of 20 to 60 percent R744, the remainder being R41.Type: ApplicationFiled: December 14, 2010Publication date: April 7, 2011Applicant: EARTHCARE PRODUCTS LIMITEDInventors: Nicholas Cox, Victor Mazur, Daniel Colbourne, Andrew Stevenson
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Publication number: 20110079042Abstract: Disclosed is a non-azeotropic refrigerant mixture containing tetrafluoropropane as a high-boiling refrigerant and a refrigeration cycle apparatus in which a non-azeotropic refrigerant mixture containing tetrafluoropropane as a high-boiling refrigerant circulates through a refrigeration cycle so as to avoid occurrence of negative pressure in a low-pressure circuit. The non-azeotropic refrigerant mixture is characterized in that a mixing ratio of a high-boiling refrigerant and a low-boiling refrigerant is determined so that a saturated vapor line where pressure is 0.00 MPa is not higher than ?45° C. in a low-pressure circuit formed between the decompressor to the compressor.Type: ApplicationFiled: June 12, 2009Publication date: April 7, 2011Applicant: Mitsubishi Electric CorporationInventors: Tetsuya Yamashita, Akihiro Nishida, Hirokazu Taniguchi, Takashi Okazaki, Yoshihiro Sumida, Masato Yosomiya, Kazuhiko Shiraishi
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Patent number: 7914697Abstract: The refrigerating machine oil composition of the invention is characterized by containing a mixed base oil which has a kinematic viscosity at 40° C. of 0.11 to 8 mm2/s and which is composed of a low-viscosity base oil (A) having a kinematic viscosity at 40° C. of 5 mm2/s or lower, and a high-viscosity base oil (B) having a kinematic viscosity at 40° C. of 20 to 400 mm2/s, each of the base oil (A) and (B) being composed of at least one species selected from among a mineral oil, a synthetic hydrocarbon compound, an oxygen-containing compound, and a sulfur-containing compound. The refrigerating machine oil composition exhibits enhanced energy saving performance by virtue of its low viscosity, has excellent sealing performance and load resistance, and can be employed in various refrigeration means, particularly suitably in a closed-type refrigerator.Type: GrantFiled: February 22, 2007Date of Patent: March 29, 2011Assignee: Idemitsu Kosan Co., Ltd.Inventor: Masato Kaneko
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Patent number: 7914698Abstract: The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a fluoroolefin and at least one other component. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents.Type: GrantFiled: June 17, 2009Date of Patent: March 29, 2011Assignee: E.I. du Pont de Nemours and CompanyInventors: Barbara Haviland Minor, Velliyur Nott Mallikarjuna Rao, Donald Bernard Bivens, Deepak Perti, Mark Steven Baunchalk
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Patent number: 7914696Abstract: Heat transfer compositions are usable in their own right or are suitable as a replacement for existing refrigeration usages. The compositions possess a reduced Greenhouse Warming Potential, yet have a capacity and energy efficiency (which may be conveniently expressed as the “Coefficient of Performance”) ideally within 20% of the values of those attained using R-134a, and preferably within 10% or less (e.g. about 5%) of these values.Type: GrantFiled: October 14, 2008Date of Patent: March 29, 2011Assignee: Ineos Fluor Holdings LimitedInventors: Robert E. Low, Stuart Corr
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Publication number: 20110062373Abstract: A magnetocaloric structure includes a magnetocaloric material and at least one protective layer. The magnetocaloric material has bar type or plank type. The protective layer is disposed on the magnetocaloric material.Type: ApplicationFiled: September 16, 2010Publication date: March 17, 2011Inventors: Li CHANG, Hui-Ling Wen, Shih-Pin Meng, Chung-Jung Kuo
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Patent number: 7906037Abstract: The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a fluoroolefin and at least one other component. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents.Type: GrantFiled: June 17, 2009Date of Patent: March 15, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Barbara Haviland Minor, Velliyur Nott Mallikarjuna Rao
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Publication number: 20110049413Abstract: The present invention relates to new intermetallic compounds having a crystalline structure of Ni3Sn2 type for the magnetic refrigeration, their use and a process for preparing the same. The present invention further relates to new magnetocaloric compositions for the magnetic refrigeration and their use.Type: ApplicationFiled: March 27, 2009Publication date: March 3, 2011Applicant: UNIVERSITE HENRI POINCARE NANCY 1Inventor: Thomas Mazet
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Publication number: 20110041530Abstract: The present invention relates to compositions comprising at least one fluoroolefin and an effective amount of stabilizer that may be an amine or a mixture of an amine with other stabilizers. The stabilized compositions may be useful in cooling apparatus, such as refrigeration, air-conditioning, chillers, and heat pumps, as well as in applications as foam blowing agents, solvents, aerosol propellants, fire extinguishants, and sterilants.Type: ApplicationFiled: August 31, 2007Publication date: February 24, 2011Applicant: E. I. DUPONT DE NEMOURS AND COMPANYInventors: Nandini C. Mouli, Barbara Haviland Minor, Mario Joseph Nappa, Thomas J. Leck
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Publication number: 20110041529Abstract: The present invention relates to solvent/cleaner and heat transfer fluid compositions comprising at least one hydrochlorofluoroolefin (HCFO), 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd), particularly the trans-isomer. The HCFO of the present invention can be used in combination with co-agents including, hydrofluorocarbons (HFCs), hydrofluoroolefins (HFOs), hydrocarbons, ethers including hydrofluoroethers (HFEs), esters, ketones, alcohols, 1,2-transdichloroethylene and mixtures thereof.Type: ApplicationFiled: May 12, 2009Publication date: February 24, 2011Applicant: ARKEMA INC.Inventors: Benjamin Bin Chen, Philippe Bonnet, Maher Y. Elsheikh, Brett L. Van Horn, Laurent Abbas
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Publication number: 20110042608Abstract: An open-cell porous shaped body for heat exchangers comprises a thermomagnetic material selected from, for example, (1) compounds of the general formula (I) (AyBy?1)2+?CwDxEz??(I) where A is Mn or Co, B is Fe, Cr or Ni, C, D and E at least two of C, D and E are different, have a non-vanishing concentration and are selected from P, B, Se, Ge, Ga, Si, Sn, N, As and Sb, where at least one of C, D and E is Ge or Si, ? is a number in the range from ?0.1 to 0.1, w, x, y, z are numbers in the range from 0 to 1, where w+x+z=1.Type: ApplicationFiled: April 27, 2009Publication date: February 24, 2011Applicant: BASF SEInventor: Bennie Reesink
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Publication number: 20110041513Abstract: What are described are polycrystalline magnetocaloric materials of the general formula MnaCobGecAx with A, B or C 0?x?0.5, 0.9?a?1.1, 0.9?b?1.1, 0.9?c?1.0, where up to 30 mol % of the Mn or Co may be replaced by Fe, Ni, Cr, V or Cu or up to 30 mol % of the Mn, Co or Ge may be replaced by vacancies, in which phases of the orthorhombic TiNiSi structure type and of the hexagonal Ni2In structure type are present at a temperature below ?40° C.Type: ApplicationFiled: August 9, 2010Publication date: February 24, 2011Applicant: Technology Foundation STWInventor: Bennie REESINK
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Publication number: 20110037017Abstract: The present invention relates to compositions comprising iodotrifluoromethane and an effective amount of at least one stabilizer selected from the group consisting of hindered phenols, thiophosphates, butylated triphenylphosphorothionates, organo phosphates, phosphites, aryl alkyl ethers, terpenes, terpenoids, epoxides, fluorinated epoxides, oxetanes, ascorbic acid, thiols, lactones, thioethers, amines, nitromethane, alkylsilanes, benzophenone derivatives, aryl sulfides, divinyl terephalic acid, diphenyl terephalic acid, ionic liquids, and mixtures thereof. These stabilized iodotrifluoromethane compositions may be useful as working fluids in multiple applications including cooling apparatus, such as refrigeration, air-conditioning, chillers, and heat pumps.Type: ApplicationFiled: March 26, 2007Publication date: February 17, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventor: Thomas J. Leck