215 results about "Trifluoroiodomethane" patented technology

The refrigerating machine oil of the invention is characterized by comprising an ester of a polyhydric alcohol and a fatty acid with a C₅-C₉ fatty acid content of 50-100 mol %, a C₅-C₉ branched fatty acid content of at least 30 mol % and a C₅ or lower straight-chain fatty acid content of no greater than 40 mol %, and by being used with a fluoropropene refrigerant and/or a trifluoroiodomethane refrigerant. The working fluid composition for a refrigerating machine according to the invention comprises the ester and a fluoropropene refrigerant and/or a trifluoroiodomethane refrigerant.

Provided are novel compositions comprising trifluoroiodomethane and an effective amount of a stabilizer preferably comprising at least one phenol compound and optionally at least one epoxide selected from the group consisting of aromatic epoxides, alkyl epoxides, alkenyl epoxides, multisubstituted epoxides, and combinations of two or more thereof. Also provided are methods of stabilizing a composition comprising trifluoroiodomethane by providing a composition comprising trifluoroiodomethane and introducing to the provided composition an effective amount of a stabilizer comprising at least one phenol compound and optionally at least one epoxide selected from the group consisting of aromatic epoxides, alkyl epoxides, alkenyl epoxides, and combinations of two or more thereof.

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.

The working fluid composition for a refrigerating machine of the invention is characterized by comprising an ester of a polyhydric alcohol and a fatty acid with a content of a C5-C9 branched fatty acid of 50-100% by mole, and a fluoropropene refrigerant and/or trifluoroiodomethane refrigerant. The refrigerating machine oil of the invention is characterized by comprising an ester of a polyhydric alcohol and a fatty acid with a content of a C5-C9 branched fatty acid of 50-100% by mole, and by being used together with a fluoropropene refrigerant and/or trifluoroiodomethane refrigerant.

This working medium for a heat cycle contains trifluoroethylene and a first component comprising at least one substance selected from carbon dioxide, fluoromethane, trifluoroiodomethane, methane, ethane, propane, helium, neon, argon, krypton, xenon, nitrogen, and ammonia.

The invention provides a method for preparing trifluoroiodomethane through utilizing industrial waste trifluoroacetic acid and industrially recovered iodine. The method has the characteristics of low cost, simple operation, mild reaction, fast reaction speed, high yield, high selectivity, environmental protection and the like. The synthesized trifluoroiodomethane is an important fluorine-containing fine chemical engineering raw material, and can be used for producing fluorine-containing finishing agents, fluorine-containing surfactants and other fluorine-containing fine chemicals.

Certain compositions comprising trifluoroiodomethane with physically-acting combustion suppressants, wherein the compositions exhibit strong synergistic combustion suppression and are useful for suppressing the combustion of many fuels. The compositions are thermally stable, compatible, non-ozone-depleting, low global warming, have reduced toxicity compared to pure trifluoroiodomethane, can be effective in lower weights and volumes than most other agents, and can be more cost-effective than current combustion suppressants.

The invention relates to a non-combustible mixing refrigerant suitable for deep refrigeration temperature of minus 80 DEG C to minus 100 DEG C. The non-combustible mixing refrigerant comprises five groups of materials, where the first group of material is tetrafluoromethane; the second group of material is trifluoromethane, hexafluoroethane or a mixture of the trifluoromethane and the hexafluoroethane; the third group of material is pentafluoroethane, trifluoroethane, perfluoropropane, difluoromethane or a mixture of two, three or multiple of the pentafluoroethane, the trifluoroethane, the perfluoropropane and the difluoromethane; the fourth group of material is iodotrifluoromethane, 1, 1, 2, 2-tetrafluoroethane, 1,1-difluoroethane, 2, 3, 3, 3-tetrafluoropropene, 1, 3, 3, 3-tetrafluoropropene or a mixture of two, three or multiple of the iodotrifluoromethane, the 1, 1, 2, 2-tetrafluoroethane, the 1,1-difluoroethane, the 2, 3, 3, 3-tetrafluoropropene and the 1, 3, 3, 3-tetrafluoropropene; the fifth group of material is perfluoro-n-butane, 1, 1, 1, 3, 3-perfluoropropane or a mixture of the perfluoro-n-butane and the 1, 1, 1, 3, 3-perfluoropropane; the molar concentrations of the five groups of materials are respectively 25-50%, 15-40%, 10-30%, 5-20% and 10-25%; and the non-combustible mixing refrigerant is safe in a back-heating type throttling refrigeration system, can realize the refrigeration in the temperature range of minus 80 DEG C to minus 100 DEG C and has low whole green house effect without ozone depletion effect.

The invention provides a novel environmentally friendly mixed refrigerant, 1,1,2-trifluoroethylene and the substances like 1,1-difluoroethylene, 1,1,2,3,3,3-hexafluoropropylene and 1,1-difluoromethaneare added in trifluoropropene or tetrafluoropropene, so that the direct filling performance of the mixed refrigerant in an air conditioner system is improved. In addition, the invention further provides the novel environmentally friendly mixed refrigerant, nonflammable halogenated substances with more iodine or fluorine atoms like 1,1,2,2-tetrafluoroethane, 1,1,1,2-tetrafluoroethane, 1,1,1,2,2-pentafluoroethane, 1,1,1,2,3,3,3-heptafluoropropane and iodotrifluoromethane are added in to the mixture, so that the flammability of the refrigerant is reduced.

The invention provides a tetrafluoropropylene-containing mixture refrigerant. According to the invention, because hydrocarbon substances such as propane, propylene, iso-butane, butane, 1-butylene and iso-butylene are added in tetrafluoropropylene, the intersolubility of the refrigerant and lubricating oil is improved; besides, hydrofluorocarbon type substances containing multiple fluorine atoms, such as trifluoro-iodomethane, difluoromethane, 1,1-difluoroethane, 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, 1,1,1,2,3,3,3-heptafluoropropane, 1,1,1,3,3,3-hexafluoropropane, 1,1,1,2,3,3-hexafluoropropane and 1,1,1,3,3-perfluoropropane are added in the mixture, so that the flammability of the refrigerant can be reduced.

Use of molecular sieves to reduce the amount of trifluoromethane (HFC-23) present in a mixture of HFC-23 with other materials, particularly from mixtures containing HFC-23 and trifluoroiodomethane (CF₃I).

A composition comprising from about 40 weight percent to about 99.9 weight percent of at least one C₁-C₅ hydrofluorocarbon, from about 0.1 weight percent to about 50 weight percent of CF3I, and from about 0.1 weight percent to about 10 weight percent of at least one C₁-C₆ hydrocarbon and the use of these composition for in methods of the recharging of refrigeration systems.

The refrigerant composition for replacing R134a in automobile air conditioner consists of dimethyl ether DME or RE170, trifluoro iodo methane R13I1 and isobutene R600a; and is prepared through liquid phase mixing the said components in certain proportion physically. The present invention has environment friendship, zero ODP, GWP lower of 1-3, heat engineering performance similar to that of R134a and high efficiency. The refrigerant composition is used for replacing R134a in automobile air conditioner.

The invention provides a refrigerant composition and a production method thereof. The refrigerant composition comprises a first component, a second component and a third component, wherein the first component is trifluoroiodomethane, the second component is ethyl fluoride, and the third component is 2,3,3,3-tetrafluoropropene, propane, dimethyl ether or methyl fluoride. The refrigerant compositionhas good environmental performance, most GWPs are lower than 100, moreover, compared with R134a, the refrigerant composition has high displacement refrigerating capacity, an EER value is equivalent to that of the R134a, and the problem of insufficient low-temperature heating performance of the R134a is solved.

The invention relates to the technical field of refrigerants, and concretely relates to environmentally-friendly mixed working media. One of the environmentally-friendly mixed working media comprisesa first component and a second component, wherein the first component is trifluoroiodomethane, and the second component is monofluoroethane; and the other environmentally-friendly mixed working mediumcomprises a first component, a second component and a third component, wherein the first component is trifluoroiodomethane, the second component is difluoromethane, and the third component is one of1,1-difluoroethane and trans-1,3,3,3-tetrafluoropropene. The components are uniformly physically mixed in proportion at normal temperature under normal pressure to obtain the environmentally-friendlymixed working media. The mixed working media provided by the invention have a good environmental performance, have a very low GWP (less than 150), and has same or better thermal performances than 1,1,1,2-tetrafluoroethane (R134a); and a preparation method of the mixed working media is simple and is easy to implement.

The invention provides a refrigerant composition. The refrigerant composition contains the following components, in percentages by mass: 1%-98% of 1,1,2-trifluoroethylene (R1123), 1%-88% of difluoromethane (R32) and 1%-48% of trifluoroiodomethane (R13I1) or 1%-12% of 1,1,1,2,2-pentafluoroethane (R125). The refrigerant composition has a GWP of 600 or less, an ODP of 0, and obvious environment-friendly advantages; and in addition, the refrigerant composition has good thermal performance and is used for the household air conditioning unit, the capacity and energy efficiency of the household air conditioning unit using the refrigerant composition are equivalent to those of a household air conditioner using an R410A refrigerant, and the can refrigerant composition replace the R410A working medium without any change of the household air conditioning system.

The present invention relates to a refrigerant composition, including trifluoroiodomethane (CF₃I); 1,1,1,2-tetrafluoropropene (HFO-1234yf); difluoromethane (HFC-32); and carbon dioxide (CO₂), for use in a heat exchange system, including refrigeration applications and in particular aspects to the use of such compositions as a replacement of the refrigerant R-404A for heating and cooling applications and to retrofitting heat exchange systems, including systems designed for use with R-404A.

The invention discloses an environment-friendly mixed refrigerant. The refrigerant comprises the following components, in percentages by mass: 1%-90% of a first component, 1%-90% of a second component, 1%-90% of a third component and 1%-97% of a fourth component, wherein the first component is trifluoroiodomethane, the second component is at least one selected from 1,1,1,2-tetrafluoroethane and pentafluoroethane, the third component is at least one selected from trans-1,3,3,3-tetrafluoropropene, 2,3,3,3-tetrafluoropropene and difluoromethane, and the fourth component is at least selected from1,1-difluoroethane, monofluoroethane, propylene, propane, dimethyl ether and isobutane. The GWP value of the mixed refrigerant provided by the invention is greatly reduced relative to R404A, the ODP is 0, and the environmental performance is better than that of the R404A.