# US 10,767,091 B2 · Heat transfer compositions, methods, and systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,767,091 B2 - Document ID: US10767091B2 - Status: Granted - Kind: B2 - Application number: 16/206,624 - Filed: 2018-11-30 - Published: 2019-05-30 - Granted: 2020-09-08 - Earliest claimed: 2017-11-30 - Assignees: Honeywell International Inc. - Applicants: Honeywell International Inc. - Inventors: Ankit Sethi; Samuel F. Yana Motta; Gustavo Pottker; Yang Zou; Elizabet del Carmen Vera Becerra; Gregory L. Smith - Web page: https://patentgrep.com/patent/US10767091B2 ## CPC - C09K 5/045: {containing only fluorine as halogen} - C10M 171/008: {Lubricant compositions compatible with refrigerants} - F25B 40/00: Subcoolers, desuperheaters or superheaters - F25B 41/40: Fluid line arrangements - C09K 2205/122: Halogenated hydrocarbons - C09K 2205/126: Unsaturated fluorinated hydrocarbons - C09K 2205/22: All components of a mixture being fluoro compounds - C09K 2205/40: Replacement mixtures - C09K 2205/43: Type R22 - C10M 2203/1006: used as base material - C10M 2205/223: used as base material - C10M 2207/2835: used as base material - C10M 2209/043: used as base material - C10N 2020/101: {Containing Hydrofluorocarbons} - C10N 2040/30: Refrigerators lubricants {or compressors lubricants} - F25B 2400/0409: for evaporators - F25B 2400/0411: for expansion valves or capillary tubes - F25B 2400/12: Inflammable refrigerants - F25B 2400/13: Economisers - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE - C10M: LUBRICATING COMPOSITIONS (well drilling compositions C09K8/02); USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION (mould release, i.e. separating, agents for metals B22C3/00, for plastics or substances in a plastic state, in general B29C33/56, for glass C03B40/02; textile lubricating compositions D06M11/00, D06M13/00, D06M15/00; immersion oils for microscopy G02B21/33) - F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS - C10N: INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS ## Abstract The present invention relates to a refrigerant composition, including trifluoroiodomethane (CF3I); 1,3,3,3-tetrafluoropropene (HFO-1234ze); difluoromethane (HFC-32), and pentafluoroethane (HFC-125) 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-22 or R-404A for heating and cooling applications and to retrofitting heat exchange systems, including systems designed for use with R-22 or R-404A. ## Claims ### Claim 1 A refrigerant comprising at least about 97% by weight of the following four compounds, with each compound being present in the following relative percentages: 36.8 to 72% by weight trifluoroiodomethane (CF3I); 2 to 36% by weight of tetrafluoropropene selected from trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E), 2,3,3,3-tetrafluoropropene (HFO-1234yf) and combinations of these; 15 to 31% by weight difluoromethane (HFC-32); and 1 to 4.5% by weight pentafluoroethane (HFC-125). ### Claim 2 (depends on 1) The refrigerant of claim 1 consisting essentially of the following four compounds, with each compound being present in the following relative percentages: 36.8 to 64.8% by weight trifluoroiodomethane (CF3I); 8 to 36% by weight trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E)); 17 to 23% by weight difluoromethane (HFC-32); and 1 to 4.2% by weight pentafluoroethane (HFC-125). ### Claim 3 (depends on 1) The refrigerant of claim 1 consisting essentially of the following four compounds, with each compound being present in the following relative percentages: about 58% by weight trifluoroiodomethane (CF3I); about 16% by weight trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E)); 22±1% by weight difluoromethane (HFC-32); and 4±0.5% by weight pentafluoroethane (HFC-125). ### Claim 4 (depends on 1) The refrigerant of claim 1 consisting of the following four compounds, with each compound being present in the following relative percentages: about 58% by weight trifluoroiodomethane (CF3I); about 16% by weight trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E)); 22±1% by weight difluoromethane (HFC-32); and 4±0.5% by weight pentafluoroethane (HFC-125). ### Claim 5 (depends on 1) The refrigerant of claim 1 consisting essentially of the following four compounds, with each compound being present in the following relative percentages: about 42 to about 60% by weight trifluoroiodomethane (CF3I); about 12 to about 30% by weight trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E)); about 18 to about 20% by weight difluoromethane (HFC-32); and 2 to 4.2% by weight pentafluoroethane (HFC-125), wherein said refrigerant is non-flammable and has a GWP of 400 or less. ### Claim 6 (depends on 1) The refrigerant of claim 1 consisting of the following four compounds, with each compound being present in the following relative percentages: about 42 to about 60% by weight trifluoroiodomethane (CF3I); about 12 to about 30% by weight trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E)); about 18 to about 20% by weight difluoromethane (HFC-32); and 2 to 4.2% by weight pentafluoroethane (HFC-125), wherein said refrigerant is non-flammable and has a GWP of 400 or less. ### Claim 7 (depends on 1) The refrigerant of claim 1 comprising at least about 98.5% by weight of the following four compounds, with each compound being present in the following relative percentages: 46 to 72% by weight trifluoroiodomethane (CF3I); 2 to 28% by weight 1,1,1,2-tetrafluoropropene (HFO-1234yf); 15 to 21.5% by weight difluoromethane (HFC-32); and 1 to 4.5% by weight pentafluoroethane (HFC-125). ### Claim 8 (depends on 1) The refrigerant of claim 1 comprising at least about 98.5% by weight of the following four compounds, with each compound being present in the following relative percentages: about 50 to about 68% by weight trifluoroiodomethane (CF3I); about 6 to about 24% by weight 1,1,1,2-tetrafluoropropene (HFO-1234yf); about 18 to about 21% by weight difluoromethane (HFC-32); and 2 to 4.5% by weight pentafluoroethane (HFC-125). ### Claim 9 (depends on 1) The refrigerant of claim 1 comprising at least about 98.5% by weight of the following four compounds, with each compound being present in the following relative percentages: about 53% by weight trifluoroiodomethane (CF3I); about 23% by weight 1,1,1,2-tetrafluoropropene (HFO-1234yf); 20±1% by weight difluoromethane (HFC-32); and 4±0.5% by weight pentafluoroethane (HFC-125). ### Claim 10 (depends on 1) The refrigerant of claim 1 consisting essentially of the following four compounds, with each compound being present in the following relative percentages: about 53% by weight trifluoroiodomethane (CF3I); about 23% by weight 1,1,1,2-tetrafluoropropene (HFO-1234yf); 20±1% by weight difluoromethane (HFC-32); and 4±0.5% by weight pentafluoroethane (HFC-125). ### Claim 11 (depends on 1) The refrigerant of claim 1 consisting essentially of the following four compounds, with each compound being present in the following relative percentages: about 50 to about 68% by weight trifluoroiodomethane (CF3I); about 6 to about 24% by weight 1,1,1,2-tetrafluoropropene (HFO-1234yf); about 18 to about 21% by weight difluoromethane (HFC-32); and 2 to 4.5% by weight pentafluoroethane (HFC-125), wherein said refrigerant is non-flammable and has a GWP of 400 or less. ### Claim 12 (depends on 1) A heat transfer composition comprising the refrigerant of claim 1. ### Claim 13 (depends on 12) The heat transfer composition of claim 12, wherein the refrigerant comprises greater than 40% by weight of the heat transfer composition. ### Claim 14 (depends on 13) The heat transfer composition of claim 13 further comprising a stabilizer selected from an alkylated naphthalene, a diene-based compound, a phenol compound and combinations of two or more of these and further comprising a lubricant selected from the group consisting of polyol esters (POEs), mineral oil, alkylbenzenes (ABs) and polyvinyl ethers (PVE). ### Claim 15 A method for transferring heat of the type comprising evaporating refrigerant liquid to produce a refrigerant vapor, compressing in a compressor at least a portion of the refrigerant vapor and condensing refrigerant vapor, said method comprising: (a) providing a refrigerant comprising at least about 97% by weight of the following four compounds, with each compound being present in the following relative percentages: 36.8 to 72% by weight trifluoroiodomethane (CF3I); 2 to 36% by weight of tetrafluoropropene selected from trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E), 2,3,3,3-tetrafluoropropene (HFO-1234yf) and combinations of these; 15 to 31% by weight difluoromethane (HFC-32); and 1 to 4.5% by weight pentafluoroethane (HFC-125); (b) evaporating said refrigerant at a temperature of from about −40° C. to about +10° C. ### Claim 16 (depends on 15) The method of claim 15 further comprising exposing at least a portion of said refrigerant and/or at least a portion of said lubricant to a sequestration material comprising: i. activated alumina, or ii. a zeolite molecular sieve comprising copper, silver, lead or a combination thereof, or iii. an anion exchange resin, or iv. a moisture-removing material, preferably a moisture-removing molecular sieve, or v. a combination of two or more of the above. ### Claim 17 (depends on 15) The method of claim 15 wherein said evaporating step occurs in a heat transfer system comprising a low temperature refrigeration system, a medium temperature refrigeration system, and/or transport refrigeration system. ### Claim 18 A heat transfer system the type comprising an evaporator, a compressor, and a refrigerant in the system, said system comprising: (a) said refrigerant comprising at least about 97% by weight of the following four compounds, with each compound being present in the following relative percentages: 36.8 to 72% by weight trifluoroiodomethane (CF3I); 2 to 36% by weight of tetrafluoropropene selected from trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E), 2,3,3,3-tetrafluoropropene (HFO-1234yf) and combinations of these; 15 to 31% by weight difluoromethane (HFC-32); and 1 to 4.5% by weight pentafluoroethane (HFC-125); and (b) a sequestration material comprising: i. activated alumina, and ii. a zeolite molecular sieve comprising copper, silver, lead or a combination thereof, and iii. an anion exchange resin, and iv. a moisture-removing material, preferably a moisture-removing molecular sieve. ### Claim 19 (depends on 18) The heat transfer system of claim 18 wherein said system further comprises an oil separator and wherein said sequestration material is located in said oil separator. ### Claim 20 (depends on 18) The heat transfer system of claim 18 wherein said heat transfer system comprises a low temperature refrigeration system, a medium temperature refrigeration system, and/or transport refrigeration system.