# US 2021/0340422 A1 · Composition containing refrigerant, refrigeration method using said composition, method for operating refrigeration device, and refrigeration device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0340422 A1 - Document ID: US20210340422A1 - Status: Published application - Kind: A1 - Application number: 17/374,253 - Filed: 2021-07-13 - Published: 2021-11-04 - Earliest claimed: 2019-01-30 - Assignees: Daikin Industries, Ltd. - Applicants: Daikin Industries, Ltd. - Inventors: Shun OHKUBO; Mitsushi ITANO; Yuuki YOTSUMOTO; Akihito MIZUNO; Tomoyuki GOTOU; Yasufu YAMADA - Web page: https://patentgrep.com/patent/US20210340422A1 ## CPC - C09K 5/045: {containing only fluorine as halogen} - C09K 5/04: the change of state being from liquid to vapour or vice versa - C10M 107/24: containing monomers having an unsaturated radical bound to an alcohol, aldehyde, ketonic, ether, ketal or acetal radical - C10M 107/34: Polyoxyalkylenes - F25B 1/00: Compression machines, plants or systems with non-reversible cycle (F25B3/00, F25B5/00, F25B6/00, F25B7/00, F25B9/00 take precedence) - 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 - C10M 2209/043: used as base material - C10M 2209/1023: used as base material - C10M 2209/1033: used as base material - C10N 2040/30: Refrigerators lubricants {or compressors lubricants} - 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 disclosure provides a composition comprising a refrigerant that has characteristics of having a coefficient of performance (COP) and a refrigerating capacity equivalent to or higher than those of R404A, and having a sufficiently low GWP. More specifically, the present disclosure provides a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), difluoromethane (HFC-32), and 2,3,3,3-tetrafluoropropene (HFO-1234yf), wherein the total concentration of the three components is 99.5% by mass or more, based on the entire refrigerant, and three components have a mass ratio that falls within a region surrounded by a figure passing through the following 4 points in a ternary composition diagram whose three vertices represent the three components: point A (HFO-1132(E)/HFC-32/HFO-1234yf=51.8/1.0/47.2 mass %), point B (HFO-1132(E)/HFC-32/HFO-1234yf=35.3/1.0/63.7 mass %), point C (HFO-1132(E)/HFC-32/HFO-1234yf=10.1/18.0/71.9 mass %), and point D (HFO-1132(E)/HFC-32/HFO-1234yf=27.8/18.0/54.2 mass %). ## Claims ### Claim 1 A composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), difluoromethane (HFC-32), and 2,3,3,3-tetrafluoropropene (HFO-1234yf), wherein the total concentration of the three components is 99.5 mass % or more, based on the entire refrigerant, and the three components have a mass ratio that falls within a region surrounded by a figure passing through the following 4 points in a ternary composition diagram whose three vertices represent the three components: point A (HFO-1132(E)/HFC-32/HFO-1234yf=51.8/1.0/47.2 mass %), point B (HFO-1132(E)/HFC-32/HFO-1234yf=35.3/1.0/63.7 mass %), point C (HFO-1132(E)/HFC-32/HFO-1234yf=10.1/18.0/71.9 mass %), and point D (HFO-1132(E)/HFC-32/HFO-1234yf=27.8/18.0/54.2 mass %). ### Claim 2 (depends on 1) The composition comprising a refrigerant according to claim 1, wherein the refrigerant comprises HFO-1132(E), HFC-32, and HFO-1234yf, the total concentration of the three components is 99.5 mass % or more, based on the entire refrigerant, and the three components have a mass ratio that falls within a region surrounded by a figure passing through the following 4 points in a ternary composition diagram whose three vertices represent the three components: point A (HFO-1132(E)/HFC-32/HFO-1234yf=51.8/1.0/47.2 mass %), point B (HFO-1132(E)/HFC-32/HFO-1234yf=35.3/1.0/63.7 mass %), point E (HFO-1132(E)/HFC-32/HFO-1234yf=15.2/14.3/70.5 mass %), and point F (HFO-1132(E)/HFC-32/HFO-1234yf=31.1/14.3/54.6 mass %). ### Claim 3 A composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), difluoromethane (HFC-32), and 2,3,3,3-tetrafluoropropene (HFO-1234yf), wherein the total concentration of the three components is 99.5 mass % or more, based on the entire refrigerant, and the three components have a mass ratio that falls within a region surrounded by a figure passing through the following 5 points in a ternary composition diagram whose three vertices represent the three components: point P (HFO-1132(E)/HFC-32/HFO-1234yf=45.6/1.0/53.4 mass %), point B (HFO-1132(E)/HFC-32/HFO-1234yf=35.3/1.0/63.7 mass %), point Q (HFO-1132(E)/HFC-32/HFO-1234yf=1.0/24.8/74.2 mass %), point R (HFO-1132(E)/HFC-32/HFO-1234yf=1.0/29.2/69.8 mass %), and point S (HFO-1132(E)/HFC-32/HFO-1234yf=6.5/29.2/64.3 mass %). ### Claim 4 (depends on 1) The composition according to claim 1, wherein the refrigerant consists of HFO-1132(E), HFC-32, and HFO-1234yf. ### Claim 5 (depends on 1) The composition according to claim 1, which is for use as an alternative refrigerant for R12, R22, R134a, R404A, R407A, R407C, R407F, R407H, R410A, R413A, R417A, R422A, R422B, R422C, R422D , R423A, R424A, R426A, R427A, R430A, R434A, R437A, R438A, R448A, R449A, R449B, R449C, R452A, R452B, R454A, R454B, R454C, R455A, R465A, R502, R507, or R513A. ### Claim 6 (depends on 1) The composition according to claim 1, comprising at least one substance selected from the group consisting of water, tracers, ultraviolet fluorescent dyes, stabilizers, and polymerization inhibitors. ### Claim 7 (depends on 1) The composition according to claim 1, wherein the composition further comprises a refrigerant oil and is for use as a working fluid for a refrigeration apparatus. ### Claim 8 (depends on 7) The composition according to claim 7, wherein the refrigerant oil comprises at least one polymer selected from the group consisting of polyalkylene glycol (PAG), polyol ester (POE), and polyvinyl ether (PVE). ### Claim 9 (depends on 1) A refrigeration method comprising operating a refrigeration cycle using the composition of claim 1. ### Claim 10 (depends on 1) A method for operating a refrigeration apparatus that operates a refrigeration cycle using the composition of claim 1. ### Claim 11 (depends on 1) A refrigeration apparatus comprising the composition of claim 1 as a working fluid. ### Claim 12 (depends on 11) The refrigeration apparatus according to claim 11, which is at least one member selected from the group consisting of air-conditioning systems, refrigerators, freezers, water coolers, ice makers, refrigerated showcases, freezing showcases, freezing and refrigerating units, refrigerating machines for freezing and refrigerating warehouses, air-conditioning systems for vehicles, turbo refrigerating machines, and screw refrigerating machines.