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: 20100203167Abstract: Disclosed herein are azeotrope compositions comprising 1,2,3,3,3-pentafluoropropene and hydrogen fluoride. The azeotrope compositions are useful in processes to produce and in processes to purify 1,2,3,3,3-pentafluoropropene. Additionally, disclosed herein are azeotrope and near-azeotrope compositions comprising 1,1,1,2,3,4,4,5,5,5-decafluoropentane and hydrogen fluoride.Type: ApplicationFiled: April 26, 2010Publication date: August 12, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Ralph Newton Miller, Mario Joseph Nappa, Velliyur Nott Mallikarjuna Rao, Allen Capron Sievert
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Publication number: 20100200797Abstract: Azeotrope-like compositions comprising 1-bromopropane and 1,1,1,2,3,3-hexafluoro-3-methoxy-propane, and uses thereof, are described.Type: ApplicationFiled: December 2, 2008Publication date: August 12, 2010Inventor: John G. Owens
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Patent number: 7771610Abstract: 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: GrantFiled: July 11, 2008Date of Patent: August 10, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Neil Andre Roberts, Owen Ross Chambers
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Patent number: 7767638Abstract: 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: April 29, 2005Date of Patent: August 3, 2010Assignee: Honeywell International Inc.Inventors: Rajiv R. Singh, Hang T. Pham, Gary Knopeck, David J. Williams
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Patent number: 7765823Abstract: The present invention relates to a hybrid vapor compression-absorption cooling or heating system and apparatus containing a refrigerant pair comprising at least one refrigerant and at least one ionic liquid. The present invention also provides for the performance of a hybrid vapor compression-absorption cycle that utilizes refrigerants and absorbents such as fluorocarbon gases in fluorinated ionic liquids. The present invention also provides a method of cooling by the execution of a hybrid vapor compression-absorption cycle using a refrigerant pair comprising at least one refrigerant and at least one ionic liquid. The present invention also provides a method of heating by the execution of a hybrid vapor compression-absorption cycle using a refrigerant pair comprising at least one refrigerant and at least one ionic liquid.Type: GrantFiled: May 16, 2006Date of Patent: August 3, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Mark Brandon Shiflett, Akimichi Yokozeki
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Publication number: 20100186432Abstract: Disclosed are compositions comprising HFC-1225ye and other compounds that are useful as heat transfer fluids, including refrigerants, in a flooded evaporator chiller, a direct expansion chiller or a closed loop heat transfer system, such as a mobile air conditioning system. The compositions are also useful as cleaning solvents, aerosol propellants, foam blowing agents, fire extinguishing or suppression agents and sterilants. Also disclosed are methods for producing cooling and methods for replacing HFC-134a in a flooded evaporator chiller, a direct expansion chiller or a closed loop heat transfer system using such compositions.Type: ApplicationFiled: July 25, 2008Publication date: July 29, 2010Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: Deepak Perti, Barbara Haviland Minor
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Publication number: 20100187464Abstract: Disclosed herein are azeotrope and near-azeotrope compositions comprising E-1,1,1,2,3-pentafluoropropene (E-HFC-1225ye) and hydrogen fluoride. The azeotrope and near-azeotrope compositions are useful in processes to produce and in processes to purify E-HFC-1225ye and/or Z-1,1,1,2,3-pentafluoropropene (Z-HFC-1225ye). Also disclosed are processes for the extractive distillation to separate E-HFC-1225ye from Z-HFC-1225ye.Type: ApplicationFiled: September 7, 2007Publication date: July 29, 2010Applicant: E.I. Du Pint De Nemours and CompanyInventors: Jeffrey P. Knapp, Barry Asher Mahler, Velliyur Nott Mallikarjuna Rao
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Publication number: 20100181523Abstract: A working fluid comprising (a) a refrigerant comprising carbon dioxide and (b) a poly(neopentylpolyol)ester composition produced by reacting a neopentylpolyol having the formula: wherein each R is independently selected from the group consisting of CH3, C2H5 and CH2OH and n is a number from 1 to 4, with at least one monocarboxylic acid having 2 to 15 carbon atoms in the presence of an acid catalyst and at a mole ratio of carboxyl groups to hydroxyl groups of less than 1:1 to form a partially esterified composition. The partially esterified poly(neopentyl)polyol composition is then reacted with additional monocarboxylic acid having 2 to 15 carbon atoms to form a final poly(neopentylpolyol)ester composition.Type: ApplicationFiled: January 8, 2010Publication date: July 22, 2010Applicant: Chemtura CorporationInventors: Richard Kelley, Dale Carr, Jeffrey Hutter, Edward T. Hessell
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Patent number: 7758768Abstract: A lubricant oil for a refrigeration machine, lubricant composition and refrigeration machine and system, said refrigeration machine and system 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 30, 2006Date of Patent: July 20, 2010Assignee: Whirlpool S.A.Inventor: Rosangela Maria Machado
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Patent number: 7759532Abstract: 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: GrantFiled: July 11, 2007Date of Patent: July 20, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Thomas J. Leck, Thomas Frank Saturno, Gregory A. Bell
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Publication number: 20100176333Abstract: A refrigerator oil composition contains base oil and polyalkylene glycol (PAG) block copolymer. The PAG block polymer is represented by the following formula (1). R1[(OR2)m(OE)nOR3]1??(1) In the formula: R1 represents a hydrocarbon residue having 1 to 10 carbon atoms; R2 represents an alkenyl group having 3 to 6 carbon atoms; E represents an ethylene group; R3 represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms; m and n each represent a positive integer, a ratio of m to n (m/n) being 99/1 to 50/50; and 1 represents an integer in a range of 1 to 100.Type: ApplicationFiled: June 3, 2008Publication date: July 15, 2010Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Takeo Tokiai, Masato Kaneko
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Patent number: 7754096Abstract: A liquefied-gas aerosol dusting composition is disclosed for preventing inhalation abuse incidents. The composition comprises at least one liquefied gas and denatonium benzoate, wherein the concentration of said denatonium benzoate in said aerosol dusting composition ranges from about 5 ppm to about 50 ppm.Type: GrantFiled: August 22, 2007Date of Patent: July 13, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Joseph Anthony Creazzo, Gary W. Jepson, Gregory Mas
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Publication number: 20100171067Abstract: A temperature-regulating fiber may include a spun phase change polymeric material that may include a plurality of phase change polymer blocks. The fiber may have a fixity ratio of at least 80% and a recovery ratio of at least 74%.Type: ApplicationFiled: December 31, 2009Publication date: July 8, 2010Applicant: The Hong Kong Polytechnic UniversityInventors: Jinlian HU, Qinghao Meng
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Patent number: 7749401Abstract: Self-steaming benefit compositions for treating fabrics are described. The present invention relates to compositions which are both self-steaming and include one or more benefit agents to provide benefits to fabrics. The present invention also relates to a method for treating fabrics utilizing the self-steaming benefit compositions of the present invention.Type: GrantFiled: May 27, 2005Date of Patent: July 6, 2010Assignee: The Procter & Gamble CompanyInventors: Brian Joseph Roselle, Robert Henry Rohrbaugh, Paul Amaat Raymond Gerard France, Vincent York-Leung Wong, Kenneth John Edelman, Julia Ann Glazer, John Philip Stoddard, Joseph Hei, Samuel B. Truslow, Velma Luisa Velazquez
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Publication number: 20100163781Abstract: A process for isomerising a (hydrohalo)fiuoroalkene, the process comprising contacting the (hydrohalo)fluoroalkene with a catalyst comprising an unsupported Lewis acid, a chromia-containing catalyst containing at least one additional metal, an alumina, a supported liquid catalyst, and mixtures thereof.Type: ApplicationFiled: April 11, 2008Publication date: July 1, 2010Inventors: Andrew Paul Sharratt, John Charles McCarthy
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Publication number: 20100163776Abstract: 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: ApplicationFiled: June 12, 2008Publication date: July 1, 2010Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventor: Mark L. Robin
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Publication number: 20100162738Abstract: A method of drying a fluid comprising a fluoropropene, which method comprises the step of contacting the fluid with a desiccant comprising molecular sieve having openings which have a size across their largest dimension of from about 3 ? to about 5 ?. A heat transfer device comprising a heat transfer fluid comprising a fluoropropene, and a desiccant comprising a molecular sieve having openings which have a size across their largest dimension of from about 3 ? to about 5 ?. Preferably, the fluoropropene is R134yf or R-1225ye.Type: ApplicationFiled: June 14, 2007Publication date: July 1, 2010Inventors: Robert E. Low, Stuart Corr
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Publication number: 20100163780Abstract: A process for the production of dichlorotrifluoroethane is described. The process comprises reacting perchloroethylene with hydrogen fluoride (HP) at elevated temperature in the vapour phase in at least one reactor in the presence of a fluorination catalyst. The process is operated so that 30 weight % or more of the perchloroethylene reactant that is fed to the at least one reactor remains unreacted having passed through the or each reactor. The dichlorotrifluoroethane may be purified and then used as it is or used to prepare pentafluoroethane.Type: ApplicationFiled: December 18, 2006Publication date: July 1, 2010Inventors: Clive Robert Giddis, Paul Hendry Stewert
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Patent number: 7743615Abstract: A formate salt based heat transfer fluid having a pH containing a phosphate for a secondary refrigeration loop is disclosed. The formate based heat transfer fluid generally is a more effective heat transfer medium than a glycol based fluid designed to operate in the same temperature range. The formate based fluid also has lower toxicity and environmental risks than the glycol fluid.Type: GrantFiled: February 17, 2004Date of Patent: June 29, 2010Assignee: The Lubrizol CorporationInventors: Gilbert R. Malone, Stephen H. Stoldt
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Patent number: 7744774Abstract: 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: November 16, 2009Date of Patent: June 29, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Melodie A. Schweitzer, Allen Capron Sievert, Joan Ellen Bartelt, Barbara Haviland Minor
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Publication number: 20100155652Abstract: A method for the development or generation of pollution credits by the substitution of lower global warming potential (GWP) mixtures of halogenated hydrocarbons or mixtures of halogenated hydrocarbons with CO2 for fluorocarbons or fluorocarbon-containing compositions of higher GWP, such as for perfluorocarbon compounds (PFC's), hydrofluorocarbon compounds (HFC's), chlorofluorocarbons (CFC's), hydrochlorofluorocarbon compounds (HCFC's), and compositions thereof, in compositions and processes employing the higher GWP compounds, and receive allocation of pollution credits for such substitution.Type: ApplicationFiled: March 2, 2010Publication date: June 24, 2010Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Matthew H. Luly, Rajiv R. Singh
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Patent number: 7736529Abstract: Provided are novel azeotrope-like compositions of SF6 and N2O, as well as methods of using the same. Also provided are methods of using SF6 compositions, including azeotrope-like compositions, including a method for suppressing an electric arc or corona discharge and a method for flame suppression. Further provided are electrical devices using such SF6 compositions as a dielectric insulating gas and rigid closed-cell foams having such SF6 compositions within the cells, wherein the foam is both thermally and electrically insulative.Type: GrantFiled: October 12, 2007Date of Patent: June 15, 2010Assignee: Honeywell International IncInventors: Matthew H. Luly, Rajiv R. Singh, Robert G. Richard
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Publication number: 20100139314Abstract: A refrigerant composition. The composition has 25 to 35 mass % difluoromethane, 20 to 40 mass % pentafluoroethane, and 35 to 45 mass % tetrafluoroethane. The composition exhibits a positive superheat at an evaporation temperature of about ?30° F. There is also a process for producing refrigeration and a refrigeration system.Type: ApplicationFiled: February 12, 2010Publication date: June 10, 2010Inventor: Mark W. Spatz
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Publication number: 20100132387Abstract: The present invention relates to fluoroolefin compositions. The fluoroolefin compositions of the present invention are useful as refrigerants or heat transfer fluids and in processes for producing cooling or heat. Additionally, the fluoroolefin compositions of the present invention may be used to replace currently used refrigerant or heat transfer fluid compositions that have higher global warming potential.Type: ApplicationFiled: January 29, 2010Publication date: June 3, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Mario Joseph Nappa, Barbara Haviland Minor
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Publication number: 20100132384Abstract: A thermal energy transfer system utilizes a composition containing one or more polyols, such as 1,3-propanediol, and one or more ionic liquids as a thermal energy transfer composition. There is also provided a method of transferring thermal energy and a process for temperature adjustment, either cooling or heating, using such a composition.Type: ApplicationFiled: April 3, 2008Publication date: June 3, 2010Inventors: Mark Brandon Shiflett, Akimichi Yokozeki
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Publication number: 20100127208Abstract: The present invention relates to fluoroolefin compositions. The fluoroolefin compositions of the present invention are useful as refrigerants or heat transfer fluids and in processes for producing cooling or heat. Additionally, the fluoroolefin compositions of the present invention may be used to replace currently used refrigerant or heat transfer fluid compositions that have higher global warming potential.Type: ApplicationFiled: January 29, 2010Publication date: May 27, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Mario Joseph Nappa, Barbara Haviland Minor
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Publication number: 20100127209Abstract: Disclosed are compositions useful in a wide variety of applications, including heat transfer fluids which possess a highly desirable and unexpectedly superior combination of properties, and heat transfer systems and methods based on these fluids. The preferred heat transfer fluid comprises from about 1 to about 40 percent, on a weight basis, of carbon dioxide (CO2) and from about 99 to about 60 percent, on a weight basis, of a compound having the Formula I XCFzR3-z (I), where X is a C2 or a C3 unsaturated, substituted or unsubstituted, alkyl radical, each R is independently Cl, F, Br, I or H, and z is 1 to 3. A preferred compound of Formula I is tetrafluoropropene, particularly 1,1,1,3-tetrafluoropropene and/or 1,1,1,3-tetrafluoropropene.Type: ApplicationFiled: September 11, 2009Publication date: May 27, 2010Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Rajiv R. Singh, Hang T. Pham, Ian Shankland
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Patent number: 7722781Abstract: 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: GrantFiled: June 22, 2007Date of Patent: May 25, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Velliyur Nott Mallikarjuna Rao, Mario Joseph Nappa, Allen Capron Sievert
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Patent number: 7722780Abstract: The present application provides a refrigerant composition for a single stage refrigeration system operation comprising: more than 25 molar percent but less than 30 molar percent of Nitrogen; at least some but less than 20 molar percent of Methane; more than 30 molar percent but less than 70 molar percent of Propane, Argon, Helium, Neon and combinations thereof, and optionally up to 45 molar percent of Ethane, Ethylene and combinations thereof and a process for preparing the said composition.Type: GrantFiled: May 19, 2004Date of Patent: May 25, 2010Assignee: Indian Institute of Technology MadrasInventor: Venkatarathnam Gadhiraju
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Publication number: 20100122545Abstract: The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a tetrafluoropropene 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: ApplicationFiled: November 16, 2009Publication date: May 20, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Barbara Haviland Minor, Thomas J. Leck, Donald Bernard Bivens
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Publication number: 20100123095Abstract: The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises 2,3,3,3-tetrafluoropropene (HFC-1234yf) and at least one hydrocarbon. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, and aerosol propellants.Type: ApplicationFiled: November 16, 2009Publication date: May 20, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Barbara Haviland Minor, Thomas J. Leck, Donald Bernard Bivens, Akimichi Yokozeki
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Patent number: 7718089Abstract: Disclosed is a method for removing residue from a surface comprising: contacting the surface with a composition comprising at least one unsaturated fluorinated hydrocarbon selected from the group consisting of compounds having the formula E- or Z—R1CH?CHR2, wherein R1 and R2 are, independently, C1 to C6 perfluoroalkyl groups, or C1 to C6 hydrofluoroalkyl groups, and recovering the surface from the composition.Type: GrantFiled: November 1, 2006Date of Patent: May 18, 2010Assignee: 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: 20100119460Abstract: Provided are azeotropic or azeotrope-like mixtures of 2,3,3,3-tetrafluoropropene (1234yf) and 3,3,3-trifluoropropene (1243zf), as well as methods for producing and using the same.Type: ApplicationFiled: November 9, 2009Publication date: May 13, 2010Applicant: HONEYWELL INTERNATIONAL INC.Inventors: HANG T. PHAM, RAJIV R. SINGH, HSUEH S. TUNG, DANIEL C. MERKEL, HALUK KOPKALLI, RYAN HULSE
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Patent number: 7713434Abstract: Disclosed is a non-flammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition; a second component selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight based on the weight of the composition; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 80% isobutane in an amount of from 3% to 4% by weight of the composition. Optionally, the composition may include at least one lubricant, at least one additive or combinations thereof.Type: GrantFiled: July 11, 2008Date of Patent: May 11, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Neil Andre Roberts, Owen Ross Chambers
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Publication number: 20100112018Abstract: A microcapsule, a structure including a microcapsule, an article including a microcapsule and a method of preparing microcapsules provided, the microcapsule includes at least one material selected from the group consisting of a magnetic substance, a dielectric substance and a combination thereof. The microcapsule also includes a volatile material.Type: ApplicationFiled: June 4, 2009Publication date: May 6, 2010Inventors: Jong-jin Park, Jong-min Kim, Sung-ho Jin
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Publication number: 20100101245Abstract: Disclosed are refrigerant compositions comprising the following components, as expressed in weight percent, and such that the total adds up to 100%, including any additives. 7.0-9.0% wt. R32 [difluoromethane, CH2F2, having a normal boiling point of ?51.7° C.]; 39.0-50.0% wt. R125 [pentafluoroethane, CF3CHF2, having a normal boiling point of ?48.5° C.]; 39.0-50.0% wt R134a [1,1,1,2 tetrafluoroethane, CF3CHF2, normal boiling point of ?26.1° C.]; 1.9 to 2.5% wt hydrocarbon, which consists essentially of 1.5-1.8% wt R600 [n-butane, CH3CH2CH2CH3, normal boiling point of ?0.5° C.], and 0.4-0.7% wt R601a [isopentane, ((CH3)2CHCH2CH3, having normal boiling point of +27.8° C.] or R601 [n-pentane (CH3CH2CH2 CH2CH3, having a normal boiling point of +36° C.)]. Further disclosed are refrigerators, freezers, air conditioners, water chillers, and heat pumps using the compositions described herein as at least one of the heat transfer compositions in the equipment.Type: ApplicationFiled: December 19, 2007Publication date: April 29, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Donald Bernard Bivens, Thomas J. Leck
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Patent number: 7704404Abstract: A process for obtaining low temperature refrigeration in an existing or new low temperature refrigeration system designed to operate with, or suitable for use with, or capable of being used with HCFC-22 as the refrigerant, the refrigerant composition being a refrigerant composition comprising difluoromethane (HFC-32), pentafluoroethane (HFC-125) and tetrafluoroethane (HFC134a), the three components being present in the composition in amounts such that the operating characteristic of the refrigerant composition in regard to superheat is provided at an acceptable level and the operating characteristics of the refrigerant composition in regard to cooling capacity, mass flow and efficiency (COP) characteristics, when employed as the refrigerant in a low temperature refrigeration system, are each at least 95% of the operating characteristics of chlorodifluoromethane (HCFC-22) if HCFC-22 were to be employed as the refrigerant in such low temperature refrigeration system.Type: GrantFiled: July 15, 2004Date of Patent: April 27, 2010Assignee: Honeywell International Inc.Inventor: Mark W Spatz
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Publication number: 20100095703Abstract: A working medium for refrigeration processes comprising at least one sorbent material and at least one refrigerant, characterized in that the sorbent material contains at least one nonvolatile organic salt which is liquid under standard conditions, or a mixture of organic salts, with the proviso that this is liquid under standard conditions, wherein the salt or the mixture has a thermal stability above 150° C.Type: ApplicationFiled: May 24, 2006Publication date: April 22, 2010Applicant: Evonik Degussa GmbHInventors: Carsten Jork, Matthias Seiler, Bernd Weyerhausen
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Publication number: 20100090155Abstract: The present disclosure relates to compositions comprising at least one fluoroolefin and an effective amount of a stabilizer comprising at least one thiol or thioether, 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: April 15, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Thomas J. Leck, Barbara Haviland Minor, Mario Joseph Nappa, Nandini C. Mouli
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Publication number: 20100093736Abstract: Biocidal compositions and their use in aqueous media, such as metalworking fluids, the compositions comprising a biocidal agent; and a non-biocidal primary amino alcohol compound of the formula (I); wherein R1, R2, R3, R4, and R5 are as defined herein.Type: ApplicationFiled: December 13, 2007Publication date: April 15, 2010Applicants: ANGUS CHEMICAL COMPANY, DOW GLOBAL TECHNOLOGIES INC.Inventors: Charles E. Coburn, John L. Pohlman, Bonnie A. Pyzowski, Patrick E. Brutto, George David Green, Raymond J. Swedo
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Patent number: 7695635Abstract: An azeotropic or azeotrope-like composition comprising a mixture of methyl iodide, 1-chloro-3,3,3,-trifluoropropene, and optionally one or more of fluorocarbons and/or hydrofluorocarbons. The compositions are present as a gas, at temperatures of about 30° C. or below. The inventive compositions serve as a non-ozone-depleting gaseous fumigant which is useful in a variety of applications, in place of methyl bromide. These compositions serve as a drop-in replacement for gaseous methyl bromide, providing the benefits of a methyl iodide fumigant while also utilizing existing methyl bromide equipment.Type: GrantFiled: October 27, 2008Date of Patent: April 13, 2010Assignee: Honeywell International IncInventors: Rajiv R. Singh, Hang T. Pham, Andrew J. Poss
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Patent number: 7691282Abstract: Disclosed is a hydrofluoroether compound comprising two terminal fluoroalkyl groups and an intervening substituted or unsubstituted oxymethylene group, each of the fluoroalkyl groups comprising only one hydrogen atom and, optionally, at least one catenated (that is, in-chain) heteroatom; with the proviso that the hydrogen atom is part of a monofluoromethylene moiety.Type: GrantFiled: September 8, 2005Date of Patent: April 6, 2010Assignee: 3M Innovative Properties CompanyInventors: Richard M. Flynn, Michael G. Costello
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Publication number: 20100078585Abstract: 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: ApplicationFiled: April 28, 2008Publication date: April 1, 2010Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventor: Mark Robin
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Publication number: 20100072416Abstract: The objective of the present invention is to provide a heat-dissipating resin composition that is used for forming a substrate for LED mounting or a reflector provided on the substrate for LED mounting and is excellent in heat dissipation, electrical insulation, heat resistance and light resistance while an LED element emits light, a substrate for LED mounting and a reflector comprising the composition. The present composition comprises a thermoplastic resin such as modified PBT and a thermally conductive filler consisting of scaly boron nitride or the like, and has thermal deformation temperature of 120° C. or higher, a thermal conductivity of 2.0 W/(m·K) or higher, and a thermal emissivity of 0.7 or higher.Type: ApplicationFiled: October 23, 2007Publication date: March 25, 2010Applicant: Techno Polymer Co. LtdInventors: Shinsuke Fujioka, Fusamichi Kitada
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Publication number: 20100072415Abstract: A process is disclosed for making CF3CF2CH3, CF3CF?CH2 and/or CF3CCl?CH2. The process involves reacting at least one starting material selected from the group consisting of halopropanes of the formula CX3CHClCH2X, halopropenes of the formula CClX2CCl?CH2 and halopropenes of the formula CX2?CClCH2X, wherein each X is independently F or Cl, with HF in a reaction zone to produce a product mixture comprising HF, HCl, CF3CF2CH3, CF3CF?CH2 and CF3CCl?CH2; and recovering the CF3CF2CH3, CF3CF?CH2 and/or CF3CCl?CH2 from the product mixture. Also disclosed is a process for making CF3CH2CHF2, CF3CH?CHF and/or CF3CH?CHCl.Type: ApplicationFiled: October 31, 2007Publication date: March 25, 2010Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: Velliyur Nott Mallikarjuna Rao, Allen Capron Sievert
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Publication number: 20100065773Abstract: Disclosed are compositions containing pentafluoroethane, 1,1,1,2-tetrafluoroethane and at least two hydrocarbons each having eight or fewer carbon atoms. Disclosed herein are compositions containing about 13 weight percent to about 20 weight percent pentafluoroethane; about 70 weight percent to about 80 weight percent 1,1,1,2-tetrafluoroethane; about 1 weight percent to about 6 weight total of at combination of hydrocarbons consisting of n-butane and n-pentane. Also disclosed herein are compositions further comprising 1,1,1,2,3,3,3-heptafluoropropane. Also disclosed are azeotrope-like compositions comprising pentafluoroethane, 1,1,1,2-tetrafluoroethane, n-butane and n-pentane and azeotrope like compositions comprising pentafluoroethane, 1,1,1,2-tetrafluoroethane, n-butane, n-pentane, and 1,1,1,2,3,3,3-heptafluoropropane.Type: ApplicationFiled: December 18, 2007Publication date: March 18, 2010Applicant: E.I. DU PONT DE NEMOURSA AND COMPANYInventor: Donald Bernard Bivens
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Publication number: 20100065772Abstract: The present invention relates to the field of compression refrigeration and air conditioning. Specifically, the present invention relates to a tracer-containing compositions comprising refrigeration/heating fluid and tracer compound(s). Additionally, the present invention relates to a method for detecting tracer compounds to identify gases after leaving the custody of the original manufacturer or prior source, and the verification of authenticity. The aforementioned method provides for the detection of tracer compounds, which in turn, may alert the refrigeration industry to when dilution, adulteration, contamination or other unauthorized practices have occurred with refrigeration products.Type: ApplicationFiled: November 19, 2009Publication date: March 18, 2010Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: Thomas J. Leck, Stuart C. Bricker, Allen C. Sievert
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Publication number: 20100051852Abstract: A process is disclosed for making CF3CF?CHF or mixtures thereof with CF2?CFCHF2.Type: ApplicationFiled: November 15, 2007Publication date: March 4, 2010Inventors: Velliyur Nott Mallikarjuna Rao, Allen Capron Sievert
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Publication number: 20100051853Abstract: A process is disclosed for making CF3CF?CHF or a mixture thereof with CF2?CFCHF2. The process involves (i) contacting CH2ClCF2CF3, and optionally CH2FCF2CClF2, in a reaction zone in the presence of a catalytically effective amount of dehydrofluorination catalyst to produce CHCl?CFCF3, and, if CH2FCF2CClF2 is present, CHF?CFCClF2; (ii) contacting CHCl?CFCF3, and CHF?CFCClF2, if any, formed in (i) with hydrogen fluoride (HF) in a reaction zone, optionally in the presence of a fluorination catalyst, to produce a product mixture comprising CHF?CFCF3, and, if CHF?CFCClF2 is present, CF2?CFCHF2; and (iii) recovering CF3CF?CHF, or a mixture thereof with CF2?CFCHF2, from the product mixture formed in (ii); and optionally (iv) separating at least a portion of any CF3CF?CHF in the product mixture formed in (ii) from the CF2?CFCHF2 in the product mixture formed in (ii). Also disclosed is an azeotropic composition involving CHCl?CFCF3, CHF?CFCClF2 and HF.Type: ApplicationFiled: November 15, 2007Publication date: March 4, 2010Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: Velliyur Nott Mallikarjuna Rao, Allen Capron Sievert
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Publication number: 20100044621Abstract: A Gd5Ge2Si2 refrigerant compound is doped or alloyed with an effective amount of silicide-forming metal element such that the magnetic hysteresis losses in the doped Gd5Ge2Si2 compound are substantially reduced in comparison to the hysteresis losses of the undoped Gd5Ge2Si2 compound. The hysteresis losses can be nearly eliminated by doping the Gd5Ge2Si2 compound with iron, cobalt, manganese, copper, or gallium. The effective refrigeration capacities of the doped Gd5Ge2Si2 compound are significantly higher than for the undoped Gd5Ge2Si2 compound.Type: ApplicationFiled: October 26, 2009Publication date: February 25, 2010Inventors: Robert D. Shull, Alexander J. Shapiro, Virgil Provenzano