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: 20110037016Abstract: 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.Type: ApplicationFiled: September 24, 2010Publication date: February 17, 2011Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Rajiv R. Singh, Gary Knopeck, David J. Williams
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Publication number: 20110023507Abstract: Heat transfer systems, methods and compositions which utilize a heat transfer fluid comprising: (a) from about 30% to about 65% by weight of HFC-134a; (b) from about 0% to about 70% by weight of HFO1234ze; and (c) from about 0% to about 70% by weight of HFO-1234yf, provided that the amount of HFO-1234ze and HFO-1234yf in the composition together is at least about 35% by weight, with the weight percent being based on the total of the components (a)-(c) in the composition.Type: ApplicationFiled: May 7, 2010Publication date: February 3, 2011Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Samuel F. Yana Motta, Mark W. Spatz, Rajiv Ratna Singh, Robert Gerard Richard, Elizabet del Carmen Vera Becerra, Daniel Burger
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Patent number: 7879253Abstract: 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: February 1, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Barbara Haviland Minor, Velliyur Nott Mallikarjuna Rao
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Publication number: 20110017942Abstract: Disclosed are compositions containing about 17.0 weight percent to about 22.0 weight percent pentafluoroethane; about 77.0 weight percent to about 81.0 weight percent 1,1,1,2-tetrafluoroethane; and about 1.0 weight percent to about 2.0 weight percent of n-butane, and which may include optional other components.Type: ApplicationFiled: April 10, 2009Publication date: January 27, 2011Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: Donald Bernard Bivens, Deepak Perti
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Publication number: 20110017940Abstract: [Problems] 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. [Means for Solving Problems] 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: ApplicationFiled: September 7, 2010Publication date: January 27, 2011Applicants: 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: 20110017941Abstract: The present invention is directed to using a composition comprising carbon dioxide and dimethyl ether as a refrigerant. In particular, the refrigerant composition comprises 3-6% by mole dimethyl ether and 97-94% by mole of carbon dioxide on the basis of a total number of moles of dimethyl ether and carbon dioxide. Advantageously, the refrigerant composition does not cause ozonosphere depletion, has a low global warming potential, and is safe and nontoxic.Type: ApplicationFiled: September 9, 2010Publication date: January 27, 2011Applicants: 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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Patent number: 7875657Abstract: The present invention relates to a composition based on trans-1,2-dichloroethylene. A subject-matter of the invention is more particularly a nonflammable composition comprising trans-1,2-dichloroethylene and at least two hydrofluorocarbons and its uses.Type: GrantFiled: November 11, 2009Date of Patent: January 25, 2011Assignee: Arkema FranceInventors: Laurent Latil, Vincent Enaux
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Publication number: 20110005723Abstract: The present invention relates to compositions comprising at least one ionic liquid and CF3I; and mixtures thereof. Such compositions may be useful as low GWP working fluids. These compositions have a variety of utilities in working fluids, which include for example, blowing agents, solvents, aerosol propellants, fire extinguishants, sterilants or heat transfer mediums (such as heat transfer fluids and refrigerants for use in refrigeration systems, refrigerators, air conditioning systems, heat pumps, chillers, and the like).Type: ApplicationFiled: September 26, 2008Publication date: January 13, 2011Inventor: Nandini C. Mouli
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Patent number: 7867410Abstract: The present invention relates to compositions comprising flammable refrigerant, fire hazard-reducing agent, and optionally a lubricant suitable for use in a refrigeration or air conditioning apparatus. Further, the present invention relates to compositions comprising lubricant and fire hazard-reducing agent and methods for reducing flammability of flammable refrigerant, for delivering a fire hazard-reducing agent to a refrigeration or air conditioning apparatus, and for replacing a non-flammable refrigerant with a flammable refrigerant.Type: GrantFiled: June 22, 2009Date of Patent: January 11, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Thomas J. Leck, Howard S. Hammel
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Publication number: 20110001080Abstract: The present invention relates to formulated systems of 1-chloro-3,3,3-trifluoropropene (R-1233zd) and/or 2-chloro-3,3,3-trifluoropropene (R-1233xf) that are sufficiently thermally and chemically stable such that they can be effectively used sans additional stabilizers. The formulations of the present invention are particularly useful compositions for refrigeration, heat transfer, and foam pre-mixes.Type: ApplicationFiled: March 6, 2009Publication date: January 6, 2011Applicant: ARKEMA INC.Inventors: Brett L. Van Horn, Maher Y. Elsheikh, Benjamin Bin Chen, Philippe Bonnet
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Patent number: 7862741Abstract: 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: January 4, 2011Assignee: E.I. du Pont de Nemours and CompanyInventors: Barbara Haviland Minor, Velliyur Nott Mallikarjuna Rao
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Patent number: 7862740Abstract: 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: January 4, 2011Assignee: E.I. Du Pont de Nemours and CompanyInventors: Barbara Haviland Minor, Velliyur Nott Mallikarjuna Rao
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Patent number: 7862739Abstract: This invention relates to a refrigerant that is azeotropic or near-azeotropic and comprises a binary blend of R1270 and R161, R170 and R717, or R744 and R41. In a first embodiment, the binary blend has a molar composition of 50 to 80 percent R1270, the remainder being R161. In a second embodiment, the binary blend has a molar composition of 30 to 60 percent R717, the remainder being R170. In a third embodiment the binary blend has a molar composition of 20 to 60 percent R744, the remainder being R161.Type: GrantFiled: May 21, 2007Date of Patent: January 4, 2011Inventors: Nicholas Cox, Victor Mazur, Daniel Colbourne, Andrew Stevenson
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Publication number: 20100328895Abstract: A composite includes a thermally conductive metal matrix and silicone particles dispersed therein. The composite can be used to form a thermal interface material in an electronic device. The composite can be used for both TIM1 and TIM2 applications.Type: ApplicationFiled: September 5, 2008Publication date: December 30, 2010Inventors: Dorab Bhagwagar, Donald Liles, Nick Shephard, Shengqing Xu, Zuchen Lin, G.M. Fazley Elahee
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Patent number: 7856948Abstract: Disclosed herein are compositions which are exothermic upon contact with oxygen and are self-steaming. The various described embodiments include compositions comprising: (a) a fuel component; (b) a water manager component; and (c) water. In one embodiment, the water manager component, has a mean particle size distribution of greater than about 250 microns. Alternatively or additionally, the ratio of the water manager component to the water is from about 0.001:1 to about 0.2:1, by weight. Alternatively or additionally, the fuel component comprises sponge iron. Alternatively or additionally, the composition comprises a volatile component. In yet another embodiment, articles comprising the compositions are described. Further, methods of making the compositions are described.Type: GrantFiled: March 2, 2005Date of Patent: December 28, 2010Assignee: Wyeth LLCInventors: Vincet York-Leung Wong, Kenneth John Edelman, Donald Louis Horning, Robert Henry Rohrbaugh, Brian Joseph Roselle
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Publication number: 20100320412Abstract: A process is disclosed for making CF3CF?CH2 or mixtures thereof with CHF2CF?CHF. This process involves (a) reacting CHCl2CF2CF3, and optionally CHClFCF2CClF2, with H2 in the presence of a catalytically effective amount of a hydrogenation catalyst to form CH3CF2CF3 and, when CHClFCF2CClF2 is present, CH2FCF2CHF2; (b) dehydrofluorinating CH3CF2CF3, and optionally any CH2FCF2CHF2, from (a) to form a product mixture including CF3CF?CH2 and, if CH2FCF2CHF2 is present, CHF2CF?CHF; and optionally (c) recovering CF3CF?CH2, or a mixture thereof with CHF2CF?CHF from the product mixture formed in (b) and/or (d) separating at least a portion of any CHF2CF?CHF in the product mixture formed in (b) from the CF3CF?CH2 in the product mixture formed in (b).Type: ApplicationFiled: October 31, 2007Publication date: December 23, 2010Applicant: E.I DU PONT DE NEMOURS AND COMPANYInventors: Mario Joseph Nappa, Velliyur Nott Mallikarjuna Rao, Allen Capron Sievert
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Publication number: 20100320413Abstract: The hydrocarbon refrigerant and detergent composition is a hydrocarbon-based composition, which may be used as a refrigerant for air conditioners, refrigerators or the like, and which may also be used as a detergent for cleaning precision components, such as semiconductor chips, motherboards or the like. The hydrocarbon composition includes about 5.0% ethane, about 60.0% propane, about 5.0% isobutene and about 30.0% butane by volume.Type: ApplicationFiled: June 17, 2009Publication date: December 23, 2010Inventor: Richard H. Maruya
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Publication number: 20100320414Abstract: Disclosed is a nonflammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition, a second component that is selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 70% isobutane in an amount of from 1% to 4% by weight and up to 5% by weight based on the weight of the composition of another fluorohydrocarbon. The composition optionally may further include at least one additive, lubricant or combination thereof.Type: ApplicationFiled: June 25, 2010Publication date: December 23, 2010Inventors: NEIL ANDRÉ ROBERTS, Owen Ross Chambers
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Publication number: 20100314574Abstract: A composition which comprises or consists of more than 75 to less than 80 wt. % of pentafluoroethane (HFC-125); more than 17 to less than 22.7 wt. % of 1,1,1,2-tetrafluoroethane (HFC-134a); and more than 2.3 to less than 3.0 wt. % of n-butane (R600).Type: ApplicationFiled: June 2, 2010Publication date: December 16, 2010Applicant: SOLVAY FLUOR GMBHInventors: Christoph MEURER, Felix FLOHR, Helge RAU
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Publication number: 20100314573Abstract: To provide a composition useful for forming a heat conductive sheet that satisfies both high heat conductivity and sufficient softness, has sufficient cohesive strength at a surface portion of a heat conductive sheet and does not cause remaining paste and breakage of an electronic appliance when the sheet is peeled. The composition comprises (A) a photo polymerizable component consisting of a (meth)acryl type monomer or its partial polymer; (B) a heat conductive filler; (C) a photo reaction initiator for initiating the polymerization of the photo polymerizable component; and (D) a photo absorber for absorbing and removing a predetermined wavelength band from electromagnetic rays used for the polymerization of the photo polymerizable component.Type: ApplicationFiled: October 19, 2007Publication date: December 16, 2010Inventors: Masaki Yoda, Yoshinao Yamazaki
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Publication number: 20100301258Abstract: that are made up of oriented polymer chains are provided. Chains of polymer may be oriented or substantially aligned in one or more directions exhibiting enhanced thermal conductivity along the direction of orientation. Orientation of polymers within sheets may lead to a wide range of thermally relevant applications.Type: ApplicationFiled: April 17, 2008Publication date: December 2, 2010Applicant: Massachusetts Institute of TechnolohyInventors: Gang Chen, Erik Skow, Xiaoyuan Chen
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Publication number: 20100300969Abstract: A method and components for heating and hydrating foods and beverages using an exothermic and pressure generating chemical reaction are described. The exothermic reaction can be initiated by water, spark, electrical impulse, squib, friction, or shock to heat non-potable water and force the water through a membrane filter, thereby producing heated, potable water.Type: ApplicationFiled: August 11, 2010Publication date: December 2, 2010Applicant: MAINSTREAM ENGINEERING CORP.Inventors: Dwight D. Back, Lawrence R. Grzyll, Deborah Stewart, Robert P. Scaringe, R. Paul Roth
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Publication number: 20100294979Abstract: 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 CH2FCF2CF3from (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: September 5, 2007Publication date: November 25, 2010Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventor: Allen Capron Sievert
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Publication number: 20100294980Abstract: A viscose fiber comprises a fiber body including a regenerated cellulosic material and a plurality of microcapsules dispersed in the regenerated cellulosic material. The regenerated cellulosic material is derived from an organic plant material and the plurality of microcapsules containing a phase change material has a transition temperature in the range of 0° C. to 100° C., the phase change material providing thermal regulation based on at least one of absorption and release of latent heat at the transition temperature.Type: ApplicationFiled: August 4, 2010Publication date: November 25, 2010Applicant: OUTLAST TECHNOLOGIES, INC.Inventors: Mark H. Hartmann, James B. Worley, Matthew North
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Patent number: 7837894Abstract: Refrigerant composition are disclosed which comprises: (a) pentafluoroethane, trifluoromethoxydifluoromethane or hexafluorocyclopropane, or a mixture of two or more thereof, in an amount of at least 75% based on the weight of the composition, (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane, trifluoromethoxypentafluoroethane, 1,1,1,2,3,3-heptafluoropropane or a mixture of two or more thereof, in an amount of from 10 to 20% by weight based on the weight of the composition and (c) an ethylenically unsaturated or saturated hydrocarbon, optionally containing one or more oxygen atoms, with a boiling point from ?50° C. to +35° C., or a mixture thereof in an amount from 1% to 4% by weight based on the weight of the composition the weight ratio of component (a):component (b) being at least 4:1.Type: GrantFiled: August 3, 2007Date of Patent: November 23, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Neil Andre Roberts, Owen Ross Chambers
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Publication number: 20100288966Abstract: The present disclosure relates to compositions comprising at least one fluoroolefin and an effective amount of a stabilizer comprising at least one ascorbic acid, terephthalate, or nitromethane, or mixtures thereof. 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: November 18, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Thomas J. Leck, Barbara Haviland Minor, Mario Joseph Nappa, Nandini C. Mouli, Jon Lee Howell
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Publication number: 20100288965Abstract: The present invention relates to compositions comprising at least one fluoroolefin and an effective amount of stabilizer that may be a terpene, terpenoid or fullerene; or a mixture of a terpene, terpenoid or fullerene 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: November 18, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Jon Lee Howell, Velliyur Nott Mallikarjuna Rao, Thomas J. Leck, Barbara Haviland Minor, Mario Joseph Nappa, Nandini C. Mouli, Ekaterina Swearingen, Andrew Edward Feiring
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Patent number: 7833433Abstract: Disclosed are methods of transferring heat to or from a fluid or body comprising causing heat to be transferred to or from a composition comprising at least one trifluoro, monochloropropene.Type: GrantFiled: September 4, 2007Date of Patent: November 16, 2010Assignee: Honeywell International Inc.Inventors: Rajiv R. Singh, Hang T. Pham, David P. Willson, Raymond H. Thomas, Mark W. Spatz, David A. Metcalf
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Patent number: 7833434Abstract: A process is disclosed for producing 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene. The process involves pyrolyzing 1,1,1,2,3-pentafluoropropane.Type: GrantFiled: June 22, 2007Date of Patent: November 16, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Velliyur Nott Mallikarjuna Rao, Mario Joseph Nappa, Allen Capron Sievert
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Publication number: 20100282999Abstract: The refrigerator oil of the invention comprises an ester of a polyhydric alcohol and a fatty acid with a content of a C5-C9 fatty acid of 50-100% by mole, a content of a C5-C9 branched fatty acid of at least 30% by mole and a content of a C5 or lower straight-chain fatty acid of not greater than 40% by mole, and it is used with a fluoropropene refrigerant and/or trifluoroiodomethane refrigerant. The working fluid composition for a refrigerating machine according to the invention comprises the ester and a fluoropropene refrigerant and/or trifluoroiodomethane refrigerant.Type: ApplicationFiled: October 20, 2008Publication date: November 11, 2010Applicant: NIPPON OIL CORPORATIONInventors: Yuji Shimomura, Katsuya Takigawa
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Patent number: 7828989Abstract: The present invention provides a pH stabilizing heat transfer medium composition comprising a main component of water, glycol, alcohol or glycol ether, and a pH buffer agent. The pH buffer agent is comprised of an alicyclic compound where a single ring-constituting carbon atom is bonded to two identical members or two different members selected from the group consisting of carboxymethyl and its salts, or where at least two ring-constituting neighboring carbon atoms are each bonded to a single member selected from the group consisting of carboxymethyl and its salts.Type: GrantFiled: May 29, 2007Date of Patent: November 9, 2010Assignee: Shishiai-KabushikigaishaInventors: Naoshi Ito, Kouhei Yoshimura
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Patent number: 7828990Abstract: A low-melting point, heat transfer fluid made of a mixture of five inorganic salts including about 29.1-33.5 mol % LiNO3, 0-3.9 mol % NaNO3, 2.4-8.2 mol % KNO3, 18.6-19.9 mol % NaNO2, and 40-45.6 mol % KNO2. These compositions can have liquidus temperatures below 80° C. for some compositions.Type: GrantFiled: December 17, 2008Date of Patent: November 9, 2010Assignee: Sandia CorporationInventors: Joseph Gabriel Cordaro, Robert W. Bradshaw
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Publication number: 20100276628Abstract: The present invention provides for a high thermal conductivity (HTC) paper that comprises a host matrix, such as mica, and HTC materials intercalated into the host matrix. The HTC materials are comprised of at least one of nanofillers, diamond like coatings directly on the host matrix, and diamond like coatings on the nanofillers.Type: ApplicationFiled: July 16, 2010Publication date: November 4, 2010Inventors: James D. Smith, Gary Stevens, John W. Wood
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Patent number: 7825081Abstract: Provided are azeotrope-like compositions comprising tetrafluoropropene and hydrofluorocarbons and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.Type: GrantFiled: August 26, 2008Date of Patent: November 2, 2010Assignee: Honeywell International Inc.Inventors: Rajiv R. Singh, Hang T. Pham, Gary M. Knopeck, Louis E. Herena, Jeremy N. Diringer
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Publication number: 20100270492Abstract: The present invention discloses a composition for temperature control and heat storage consisting of sodium sulfate decahydrate, a compound of copolymers, a kind of fibres, a fusion temperature-depressing salt, a nucleating agent, and water, and a method of making it. The composition has high heat storage capacity and temperature control ability of about 35-65 Kwh/m3 within human comfort temperature level of 16 to 28° C., stable and suitable for temperature control and heat storage in buildings and houses.Type: ApplicationFiled: April 22, 2009Publication date: October 28, 2010Inventor: Joe R. H. Zhao
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Patent number: 7820611Abstract: The present invention relates to a composition based on 1,1,1,3,3-pentafluorobutane (HFC-365 mfc), that can be used in deposition, cleaning, degreasing and drying applications. Its object is also a fluid for cleaning internal heat-transfer systems. The object of the present invention is also a method for dissolving oil and for cleaning.Type: GrantFiled: July 20, 2005Date of Patent: October 26, 2010Assignee: Arkema FranceInventors: Laurent Caron, Jean-Pierre Lallier, Gerard Guilpain
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Publication number: 20100267596Abstract: The present invention relates to a method for improving the hydrolysis stability of an ionic liquid (IL), in which at least one tertiary amine or one quaternary ammonium compound different from the ionic liquid (IL) is added to an ionic liquid (IL).Type: ApplicationFiled: December 12, 2008Publication date: October 21, 2010Applicant: BASE SEInventors: Georg Degen, Veit Stegmann, Klaus Ebel, Klemens Massonne, Laszlo Szarvas, Uwe Vagt, Matthias Maase
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Publication number: 20100257881Abstract: Disclosed are compositions comprising iodotrifluoromethane and other compounds that are useful as heat transfer fluids, including refrigerants, in a stationary air conditioning or refrigeration system, a flooded evaporator chiller or a direct expansion chiller. Also disclosed are methods for producing cooling and methods for replacing R22, R407C, R410A, R404A or R507A in such equipment.Type: ApplicationFiled: October 31, 2008Publication date: October 14, 2010Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventor: Deepak Perti
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Publication number: 20100251803Abstract: Disclosed herein are detectable refrigerant compositions, comprising from about 0.001 to about 5 weight percent tracer compositions, which are useful to identify leaking in a vapor compression refrigeration and/or air conditioning system. The presence of the tracers make the refrigerant compositions detectable by chemo/electro-active array, corona discharge, heated diode, electrochemical, photoionization, infra red, ultrasonic and electron capture detectors.Type: ApplicationFiled: June 22, 2010Publication date: October 7, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: DONALD BERNARD BIVENS, Thomas J. Leck, Mack McFarland, Barbara Haviland Minor, John Carl Steichen
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Patent number: 7807074Abstract: A dielectric gaseous compound which exhibits the following properties: a boiling point in the range between about ?20° C. to about ?273° C.; low ozone depleting; a GWP less than about 22,200; chemical stability, as measured by a negative standard enthalpy of formation (dHf<0); a toxicity level such that when the dielectric gas leaks, the effective diluted concentration does not exceed its PEL; and a dielectric strength greater than air.Type: GrantFiled: December 12, 2006Date of Patent: October 5, 2010Assignee: Honeywell International Inc.Inventors: Matthew H. Luly, Robert G. Richard
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Publication number: 20100247751Abstract: A process for manufacturing a thermally and/or electrically conducting solid, in which: at least one doped aqueous dispersion is prepared, the dispersion including a mica powder and at least one dopant powder, these being dispersed in a non-ionic aqueous liquid, each dopant being chosen from graphites, with the exception of unexpanded expandable graphites, the mica representing at least 5% by weight of the solid matter of the dispersion, the dopant(s) representing 1 to 95% by weight of the solid matter of the dispersion and a proportion of each dopant being chosen depending on the desired thermal and electrical conductivities; each doped aqueous dispersion undergoes a forming operation, the proportion by weight of solid matter in the dispersion having been chosen so as to obtain, in the case of the doped aqueous dispersion, a viscosity compatible with the forming technique used; and the doped aqueous dispersion is left to undergo form consolidation, by at least the evaporation of the aqueous phase of the dispType: ApplicationFiled: November 20, 2008Publication date: September 30, 2010Applicants: UNIVERSITE PAUL SABATIER TOULOUSE III, INSTITUT NATIONAL POLYTECHNIQUE DE TOULOUSEInventors: Pierre Gros, Jacques Prosdocimi
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Publication number: 20100243943Abstract: Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of E-1,1,1,4,4,5,5,5-Octafluoro-2-pentene with methyl formate, n-pentane, 2-methylbutane, 1,1,1,3,3-pentafluorobutane, trans-1,2-dichloroethylene, 1,1,1,3,3-pentafluoropropane, dimethoxymethane, cyclopentane or Z-1,1,1,4,4,4-hexafluoro-2-butene. 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 as propellants. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as heat transfer media.Type: ApplicationFiled: September 5, 2008Publication date: September 30, 2010Inventor: Mark L. Robin
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Publication number: 20100243948Abstract: The present invention relates to compositions and processes of using perfluoropolyether to maintain or improve the oil return, lubrication, cooling capacity, or energy efficiency of a refrigeration, air conditioning or heat transfer system.Type: ApplicationFiled: June 9, 2010Publication date: September 30, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Thomas J. Leck, Thomas Frank Saturno, Gregory A. Bell
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Patent number: 7803283Abstract: Provided are azeotropic and azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb). Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf).Type: GrantFiled: March 17, 2009Date of Patent: September 28, 2010Assignee: Honeywell Internationl Inc.Inventors: Hang T. Pham, Rajiv R. Singh, Hsuehsung Tung, Konstantin A. Pokrovski, Daniel C. Merkel
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Patent number: 7799240Abstract: Refrigerant composition are disclosed which comprises: (a) pentafluoroethane, trifluoromethoxydifluoromethane or hexafluorocyclopropane, or a mixture of two or more thereof, in an amount of at least 75% based on the weight of the composition, (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane, trifluoromethoxypentafluoroethane, 1,1,1,2,3,3-heptafluoropropane or a mixture of two or more thereof, in an amount of from 10 to 20% by weight based on the weight of the composition and (c) an ethylenically unsaturated or saturated hydrocarbon, optionally containing one or more oxygen atoms, with a boiling point from ?50° C. to +35° C., or a mixture thereof in an amount from 1% to 4% by weight based on the weight of the composition the weight ratio of component (a):component (b) being at least 4:1.Type: GrantFiled: July 12, 2007Date of Patent: September 21, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Neil Andre Roberts, Owen Ross Chambers
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Patent number: 7794618Abstract: The present invention provides azeotrope-like compositions of 1,1,1,2,2-pentafluoropropane (HFC-245cb) with either the Z isomer of 1,1,1,2,3-pentafluoropropene (HFO-1225yeZ) alone or with mixtures of the E and Z isomers of 1,1,1,2,3-pentafluoropropene (HFO-1225 yeZ and HFO-1225 yeE) and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants, and in process for separating azeotrope-like mixtures.Type: GrantFiled: December 13, 2007Date of Patent: September 14, 2010Assignee: Honeywell International Inc.Inventors: Hang T. Pham, Ryan J. Hulse, Rajiv R. Singh
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Patent number: 7795193Abstract: A base for electric insulating oil comprising an esterification product from a C8-C20 higher fatty acid and a C6-C14 branched aliphatic monohydric alcohol; or a base for electric insulating oil comprising an esterification product from a mixed fatty acid derived from palm oil and/or mixed fatty acid derived from soybean oil and a C1-C5 aliphatic monohydric alcohol or C6-C14 branched aliphatic monohydric alcohol. The thus provided base for electric insulating oil excels in viscosity, fluidity, chemical stability, etc. and is capable of satisfactorily exhibiting electrical characteristics of electric insulating oil.Type: GrantFiled: August 16, 2004Date of Patent: September 14, 2010Assignees: Lion Corporation, Japan AE Power Systems CorporationInventors: Mitsuhiko Takei, Takaaki Kanoh, Hidenobu Koide, Kiyoshi Fujii
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Patent number: 7788939Abstract: An azeotrope spray cooling system for utilizing an azeotrope coolant for improving the performance of a spray cooling system. An azeotrope coolant is utilized within a two-phase thermal management system for thermally managing one or more heat producing devices. The characteristics of the azeotrope coolant may be adjusted for various types of thermal management applications by altering the components of the azeotrope coolant.Type: GrantFiled: July 16, 2005Date of Patent: September 7, 2010Assignee: Parker-Hannifin CorporationInventors: Charles L. Tilton, Donald E. Tilton, Bruce A. Smetana, Angela R. Maehren, Philip W. Appel, Randall T. Palmer
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Patent number: 7786061Abstract: 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: October 9, 2009Date of Patent: August 31, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Barbara Haviland Minor, Melodie A. Schweitzer
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Publication number: 20100200798Abstract: A process is disclosed for the manufacture of CF3CF=CH2 and CF3CH=CHF. The process involves dehydrofluorinating CF3CHFCH2F in the presence of a dehydrofluorination catalyst to produce a product mixture comprising CF3CF=CH2 and CF3CH=CHF, and recovering said CF3CF=CH2 and CF3CH=CHF from the product mixture. The present invention also provides a composition comprising (a) the Z-isomer of CF3CH=CHF and (b) HF; wherein the HF is present in an effective amount to form an azeotropic combination with the Z-CF3CH=CHF.Type: ApplicationFiled: April 13, 2010Publication date: August 12, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: VELLIYUR NOTT MALLIKARJUNA RAO, Mario Joseph Nappa, Allen Capron Sievert