Abstract:
Provided are azeotropic or azeotrope-like mixtures of 1,3,3,3-tetrachloroprop-1-ene (HCO-1230zd) and hydrogen fluoride. Such compositions are useful as a feed stock in the production of HFC245fa and HCFO1233zd.
Abstract:
The present invention relates, in part, to cleaning methods and solvent cleaning compositions including at least one hydrofluoro-olefin or hydrochlorofluoro-olefin solvent for use in connection with cleaning of metal parts, and in certain preferred embodiments cleaning metal parts to be used in an aircraft.
Abstract:
Compositions comprising multi-fluorinated olefins and HFC-32 are disclosed. Such compositions are useful particularly for in stationary refrigeration and air conditioning equipment.
Abstract:
Methods for forming an improved refrigeration system comprising: (a) providing an existing refrigeration circuit comprising an existing refrigerant having a GWP of greater than 1200, a plurality of evaporators in a refrigerated space containing products accessible to consumers, a rack of compressors and at least one condenser located remotely from the areas accessible to consumers; (b) disconnecting the fluid connection between the existing liquid refrigerant from said condenser and said evaporators; (c) disconnecting the fluid connection between said existing refrigerant vapor from said evaporators in step (b) and said suction of said compressor or compressor rack; and (d) establishing a new first refrigeration circuit comprising the compressor rack and said condenser; (e) establishing a new second refrigeration circuit comprising at least one of the evaporators by steps comprising: (i) removing the existing refrigerant from the evaporators and at least a portion of said conduits which have been disconnected in steps (b) and (c); and (ii) replacing the removed existing refrigerant with a second refrigerant comprising: (1) from about 30 to about 70% by weight of CF3I; (2) from about 9% to about 58% by weight of HFO-1234yf; (3) from 1% to about 21.5% by weight of HFC-32; and optionally (4) from 0.5% to 4% by weight of HFC-125, CO2 or a combination of HFC-125 and CO2.
Abstract:
Method for retrofitting an existing heat transfer system comprising adding to said existing system a refrigerant consisting essentially of: (i) from about 25% to about 45% by weight of 1,1,1,2-tetrafluoroethane (HFC-134a); (ii) from 25% to about 35% by weight of trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E)) and/or 2,3,3,3-tetrafluoropropene (HFO-1234yf); and (iii) from about 37% to about 46% by weight of a combination of difluoromethane (HFC-32) and pentafluoroethane (HFC-125), provided that the weight ratio of HFO-32:HFC-125 is from about 1.21:1 to about 0.8:1, wherein the refrigerant preferably is a non-flammable refrigerant having a GWP of 1350 or less.
Abstract:
Disclosed are methods of forming foam comprising: (a) providing a foamable composition comprising an isocyanate, a polyol and a physical blowing agent comprising at least about 50% by weight of hydrohaloolefin, including trans1233zd, and wherein the polyol comprises a polyol or mixture of polyols such that the hydrohaloolefin, including trans1233zd, has a solubility in said polyol of less than about 30%; and (b) forming a foam from said foamable composition.
Abstract:
Provided are azeotrope-like compositions consisting essentially of 1,1,1,2-tetrafluoropropene and 1,1,1,2-tetrafluoroethane and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.
Abstract:
Compositions comprising multi-fluorinated olefins and HFC-32 are disclosed. Such compositions are useful particularly for in stationary refrigeration and air conditioning equipment.
Abstract:
The present invention relates to a refrigerant composition, including difluoromethane (HFC-32), pentafluoroethane (HFC-125), and trifluoroiodomethane (CF3I) for use in a heat exchange system, including air conditioning and refrigeration applications and in particular aspects to the use of such compositions as a replacement of the refrigerant R-410A for heating and cooling applications and to retrofitting heat exchange systems, including systems designed for use with R-410A.
Abstract:
Disclosed are methods of forming foam comprising: (a) providing a foamable composition comprising an isocyanate, a polyol and a physical blowing agent comprising at least about 50% by weight of hydrohaloolefin, including trans1233zd, and wherein the polyol comprises a polyol or mixture of polyols such that the hydrohaloolefin, including trans1233zd, has a solubility in said polyol of less than about 30%; and (b) forming a foam from said foamable composition.