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6843930 |
Composition of refrigerant mixtures for high back pressure condition
There is provided a composition of refrigerant mixtures for high back pressure condition, comprising propane, propylene or 1,1-difluoroethane and, optionally, additive selected from the group...
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6841087 |
Refrigerant composition comprising difluoromethane, 1,1,1-trifluoroethane and 1,1,1,2-tetrafluoroethane
A refrigerant composition that can be a substitute for chlorodifluoromethane (HCFC-22) comprises: (a) a first constituent of difluoromethane, (b) a second constituent of 1,1,1-trifluoroethane, (c)...
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6814884 |
Method of transferring heat using a working fluid containing 1,1,1,3,3-pentafluorobutane as refrigerant or heat transfer medium
A method of using mixtures consisting essentially of 1,1,1,3,3-pentafluorobutane (R365mfc) and at least one further partially fluorinated hydrocarbon selected from the group consisting of...
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6806247 |
Azeotrope-like compositions of tetrafluoroethane, pentafluoropropane, methylbutane and water
This invention provides azeotrope-like compositions of 1,1,1,2-tetrafluoroethane, 1,1,1,3,3-pentafluoropropane-245fa and water that are environmentally desirable for use as refrigerants, aerosol...
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6800216 |
Refrigerant composition for replacing chlorodifluoromethane
A refrigerant composition that can be a substitute for chlorodifluoromethane (HCFC-22) comprises: (a) a first constituent of difluoromethane, (b) a second constituent of 1,1,1-trifluoroethane, (c)...
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6784150 |
Composition of pentafluoropropane, pentafluoropropane and water
Disclosed are compositions comprising 1,1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluorobutane and water, said compositions are environmentally desirable for use as blowing agents for polymer...
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6783691 |
Compositions of difluoromethane, pentafluoroethane, 1,1,1,2-tetrafluoroethane and hydrocarbons
The present invention relates to azeotrope-like compression refrigerant compositions consisting essentially of difluoromethane (HFC-32), pentafluoroethane (HFC-125), 1,1,1,2-tetrafluoroethane...
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6770614 |
Cleaner for electronic parts and method for using the same
Precision cleaning compositions for electronic and electrical components comprise at least one halogenated, saturated or unsaturated hydrocarbon other than cis-1,2-dichloroethylene; at least one...
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6753356 |
Foaming compositions
Use as foaming agents having a low environmental impact of azeotropic or near azeotropic compositions using difluoromethoxy-bis(difluoromethyl ether) and/or...
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6742345 |
Temperature control system using aqueous 1,3-propanediol solution
A temperature control system is described for producing and maintaining temperatures in a pre-defined space within a pre-defined temperature range. A working fluid comprising an aqueous solution of...
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6722145 |
High efficiency very-low temperature mixed refrigerant system with rapid cool down
The present invention is a refrigeration system that uses a nonflammable, nonchlorinated refrigerant mixture to achieve very-low temperatures using a single compressor. The system is characterized...
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6695973 |
Near-azeotropic ternary compositions constituted by hydrogenated fluorocarbons and hydrocarbons, suitable as refrigerating fluids
Near-azeotropic ternary compositions of hydrofluorocarbons with n-butane or isobutane selected from: A) 1,1,1,2-tetrafluoroethane (R134a) 65-94% by weight pentafluoroethane (R125) 2-25% by weight...
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6692653 |
Refrigerant composition
The present invention relates to a refrigerant composition of four-constituent system, comprising: (a) a first constituent of difluoromethane, (b) a second constituent of...
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6673259 |
Azeotrope-like compositions of pentafluoropropane
Disclosed are azeotrope-like compositions comprising 1,1,1,3,3-pentafluoropropane and at least one C 3 or C 4 hydrocarbon, and optionally water, said compositions are environmentally desirable...
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6669862 |
Refrigerant composition
A refrigerant composition comprises a mixture of three HFC (hydrofluorocarbons) refrigerants, namely, HFC 32, HFC 125 and HFC 134a. A lower alkyl alcohol such as ethanol is included in the mixture...
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6666985 |
Polyol ester lubricants for hermetically sealed refrigerating compressors
A high quality lubricant for hermetically sealed domestic air conditioner and refrigerator compressors, especially those using chlorine free hydrofluorocarbon refrigerant working fluids, is...
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6656380 |
Super-coolable composition having long-duration phase change capability, process for preparation of same, process for super-cooling same and articles comprising same
An article according to one embodiment of the disclosures herein includes a cooling core body, a cooling member and a super-coolable composition. The cooling core body has a core cavity therein....
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6656891 |
Refrigerating machine oil composition
The invention provides a refrigerating machine oil composition by which a capillary tube is hardly clogged when a hydrofluorocarbon type, a hydrocarbon type, an ether type, a carbon dioxide type or...
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6656381 |
Heat and mass transfer additives for improved aqueous absorption fluids
The rate of water vapor sorption of an absorption cycle cooling and/or heating system using an aqueous alkali metal halide solution as the working fluid is increased by adding to the fluid an...
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6656379 |
Refrigerant alternative to chlorinated freon and method of manufacturing thereof
The present invention provides a refrigerant alternative to chlorinated freon, a conventional refrigerant, that is not inferior to chlorinated freon in refrigerant capacity, is applicable to...
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6652769 |
Refrigerant composition and refrigerating circuit employing the same
The development of a substitutable refrigerant composition that enables a conventional refrigerating circuit to maintain its performance without changing the circuit configuration has been...
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6649079 |
Composition of refrigerant mixtures for low back pressure condition
There is provided a composition of refrigerant mixtures for low back pressure condition, comprising isobutane, 1,1-difluoroethane and, optionally, additive selected from the group consisting of...
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6638987 |
Azeotrope-like compositions of tetrafluoroethane, pentafluoropropane and water
This invention provides azeotrope-like compositions of 1,1,1,2-tetrafluoroethane, 1,1,1,3,3-pentafluoropropane-245fa and water that are environmentally desirable for use as refrigerants, aerosol...
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6635187 |
Compositions comprising hydrofluorocarbons and their manufacture
A process is disclosed for producing compositions including (a) a compound selected from the group consisting of CHF 2 CF 3 , CHF 2 CHF 2 , CH 2 FCF 3 , CH 3 CF 3 , CH 3 CHF 2 , CH 2 FCF 2 CHF 2 ...
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6631625 |
Non-HCFC refrigerant mixture for an ultra-low temperature refrigeration system
Methods and apparatus for a refrigeration heat exchanger section useful in circulating a substantially non-HCFC refrigerant mixture which comprises: a compressor means, an auxiliary condenser, a...
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6632376 |
Compositions of a hydrofluoroether and HFC-32
This invention relates to compositions that include at least one fluoroether and at least one hydrofluorocarbon. Included in this invention are compositions of a cyclic or acyclic hydrofluoroether...
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6627106 |
Salt mixtures for storing thermal energy in the form of heat of phase transformation
Thermal energy in the form of heat of phase transformation can be stored in a ternary salt mixture of the formula: ANO 3 +LiNO 3 +Mg(NO 3 ) 2 .6H 2 O.
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6592773 |
Refrigerant mixture comprising difluromethane, pentafluroethane and 1,1,1-trifluoroethane
A novel refrigerant composition useful as a substitute for HCFC-22, comprising a first constituent of difluoromethane (CH 2 F 2 , HFC-32); a second constituent of pentafluoroethane (CHF 2 CF 3 ,...
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6592774 |
Refrigerant mixture comprising difluromethane, pentafluroethane and 1,1,1-trifluoroethane
A novel refrigerant composition useful as a substitute for HCFC-22, comprising a first constituent of difluoromethane (CH 2 F 2 , HFC-32); a second constituent of pentafluoroethane (CHF 2 CF 3 ,...
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6586488 |
Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and hydrocarbons
Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and at least one hydrocarbon selected from the group n-pentane, iso-pentane, cyclopentane, n-hexane and iso-hexane are provided. The...
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6582621 |
Refrigerator oils for use with chlorine-free fluorocarbon refrigerants
A refrigerator oil for use in compressors using therein a hydrogen-containing halogenocarbon as a refrigerant, consisting essentially of as a base oil at least one kind of an ester selected from...
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6576153 |
Hydrofluorocarbon refrigerants for use in centrifugal chillers
This invention relates to hydrofluorocarbons useful in refrigeration and heat pump applications. The invention provides hydrofluorocarbons selected from the group of 1,1,2,3,3-pentafluoropropane,...
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6574973 |
Ternary refrigerant compositions containing fluorinated ethers as replacements for R-22
Refrigerant compositions include mixtures of at least three different components, including a fluorinated ether with at least one of a second fluorinated ether, an ether and a fluorinated...
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6565766 |
Environmentally safer replacement refrigerant for freon 12-based refrigeration systems
An apparatus and method wherein ozone layer-damaging dichlorodifluoromethane is substituted with a mix of less environmentally damaging refrigerants chlorodifluoroethane and tetrafluoroethane in...
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6560981 |
Mixed refrigerant temperature control using a pressure regulating valve
A standard refrigeration pressure regulating valve limits the minimum temperature produced by a refrigeration process, which uses a refrigerant mixture including at least two components whose...
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6557358 |
Non-hydrocarbon ultra-low temperature system for a refrigeration system
Methods and apparatus for non-hydrocarbon design of ultra-low temperature refrigeration systems, which are particularly suited a non-hydrocarbon ultra-low temperature refrigeration system that can...
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6551524 |
Polyol ester lubricants, especially those compatible with mineral oils, for refrigerating compressors operating at high temperatures
A high quality lubricant for compressors operated during at least part of their compression cycle at temperatures above normal human comfort temperatures, such as most automotive air conditioners,...
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6551523 |
Blended polyol ester lubricants for refrigerant heat transfer fluids
An ester blend, including an ester having neopentylglycol and a source of 2-ethylhexanoic acid as its reactive components and an ester having pentaerythritol and a source of 2-ethylhexanoic acid as...
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6546740 |
Ternary refrigerant compositions which contain perfluoroorgano sulfur compounds as replacements for R-22
Refrigerant compositions include mixtures of at least three different components, including a fluorinated sulfur-containing compound with at least one of a fluorinated ether or a fluorinated...
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6540933 |
Process for the production of hexafluoropropylene from CC1F2CC1FCF3 and azeotropes of CC1F2CC1FCF3 with HF
A process for the manufacture of CF 3 CF═CF 2 is disclosed. The process involves contacting 2,3-dichloro-1,1,1,2,3,3-hexafluoropropane with at least 0.1 mole of hydrogen in a reaction vessel of...
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6527974 |
Monofunctional ether heat and mass transfer additives for aqueous absorption fluids
An aqueous absorption fluid composition, process and apparatus wherein the absorption fluid contains at least one monofunctional ether heat and mass transfer additive which provides improved water...
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6526764 |
Hydrofluorocarbon refrigerant compositions soluble in lubricating oil
Hydrofluorocarbon refrigerants are not soluble in hydrocarbon oil. Retrofitting refrigeration equipment with hydrofluorocarbons generally entails the use of expensive polyol ester (POE) lubricants....
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6524496 |
Azeotrope-like composition of 1,1,1,3,3-pentafluoropropane and 1-chloro-1,1,3,3,3-pentafluoropropane
Provided are azeotropic and azeotrope-like mixtures of 1,1,1,3,3-pentafluoropropane (HFC-245fa) and 1-chloro-1,1,3,3,3-pentafluoropropane (HCFC-235fa) that are useful as intermediates in the...
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6511610 |
Composition that can be used as a refrigerant
Composition consisting essentially of 55 to 94% R-125, 2.5 to 35% of R-134a and 3.5 to 25% by weight of DME, and its use as a refrigerant in a heat transfer system designed for R-22 and comprising,...
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6508950 |
Refrigerant mixtures containing difluoromethane (HFC-32), pentafluoroethane (HFC-125) and 1,1,1,2-Tetrafluoroethane (HFC-134a)
The present invention relates to novel refrigerant mixtures as a substitute for chlorodifluoromethane (CHClF 2 , HCFC-22). More specifically, the invention is directed to refrigerant mixtures that...
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6506317 |
Cooling medium for optical equipment and cooling device using the same
A cooling medium and a cooling device for optical equipment using the same, which cooling medium has a refractive index in a specific range, hardly causes the problem to dissolve or swell plastic...
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6503417 |
Ternary compositions of ammonia, pentafluoroethane and difluoromethane
Disclosed are ternary azeotropic, azeotrope-like, and zeotropic compositions of ammonia, pentafluoroethane and difluoromethane. These compositions are useful as refrigerants, and particularly as...
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6500358 |
Non-azeotropic refrigerant compositions comprising difluoromethane; 1,1,1-trifluoroethane; or propane
The present invention provides refrigerant blends which are replacements for chlorodifluoromethane(HCFC-22). The present blends have refrigeration characteristics which are similar to HCFC-22. The...
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6495062 |
Lubricating oil composition for refrigerators and method for lubrication with the composition
A composition for use in compression refrigeration comprising (A) a refrigerant containing a C1-C8 hydrocarbon as the principal ingredient, and (B) a lubrication base oil primarily formed of a...
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RE37938 |
Pentafluoropropane compositions
The present invention relates to compositions of pentafluoropropane and a fluorinated propane having from 1 to 5 fluorine atoms; a hydrocarbon having from 1 to 5 carbon atoms;...
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