# US 10,767,913 B2 · Compositions comprising 1,1-difluoroethene (R-1132A) > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,767,913 B2 - Document ID: US10767913B2 - Status: Granted - Kind: B2 - Application number: 16/522,495 - Filed: 2019-07-25 - Published: 2019-12-05 - Granted: 2020-09-08 - Earliest claimed: 2013-07-30 - Assignees: Mexichem Fluor S.A. De C.V. - Applicants: Mexichem Fluor S.A. de C.V. - Inventors: Robert E. Low; Andrew P. Sharratt - Web page: https://patentgrep.com/patent/US10767913B2 ## CPC - F25B 45/00: Arrangements for charging or discharging refrigerant - B01D 11/0288: {Applications, solvents} - B01D 11/0492: {Applications, solvents used} - C09K 3/30: for aerosols (aerosol containers B65D83/14) - C09K 5/045: {containing only fluorine as halogen} - C11D 7/04: Water-soluble compounds - C11D 7/50: Solvents - C11D 7/505: {Mixtures of (hydro)fluorocarbons} - C11D 7/5072: {Mixtures of only hydrocarbons} - F01K 5/02: used in regenerative installation - F25B 7/00: Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit (F25B9/00 takes precedence) - C09K 2205/106: Carbon dioxide - C09K 2205/12: Hydrocarbons - C09K 2205/122: Halogenated hydrocarbons - C09K 2205/126: Unsaturated fluorinated hydrocarbons - C09K 2205/128: Perfluorinated hydrocarbons (C09K2205/124, C09K2205/126 take precedence) - C09K 2205/22: All components of a mixture being fluoro compounds - C09K 2205/32: The mixture being azeotropic - C09K 2205/40: Replacement mixtures - F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE - C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL - F01K: STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES (gas-turbine or jet-propulsion plants F02; nuclear power plants, engine arrangements therein G21D) ## Abstract The invention provides a composition comprising 1,1-difluoroethene (R-1132a); a second component selected from the group consisting of hexafluoroethane (R-116), ethane (R-170) and mixtures thereof; and, optionally carbon dioxide (CO2, R-744). ## Claims ### Claim 1 An azeotropic or near-azeotropic composition comprising from about 14 to about 99% by weight of 1,1-difluoroethene (R-1132a) and from about 1 to about 86% by weight of hexafluoroethane (R-116). ### Claim 2 (depends on 1) A composition according to claim 1 comprising from about 36 to about 96% by weight of R-1132a and from about 4 to about 64% by weight of R-116. ### Claim 3 (depends on 2) A composition according to claim 2 comprising from about 40 to about 60% by weight of R-1132a and from about 60 to about 40% by weight of R-116. ### Claim 4 (depends on 3) A composition according to claim 3 comprising from about 44 to about 56% by weight of R-1132a and from about 56 to about 44% by weight of R-116. ### Claim 5 (depends on 4) A composition according to claim 4 comprising from about 48 to about 56% by weight of R-1132a and from about 52 to about 44% by weight of R-116. ### Claim 6 (depends on 5) A composition according to claim 5 comprising from about 48 to about 53% by weight of R-1132a and from about 47 to about 52% by weight of R-116. ### Claim 7 (depends on 6) A composition according to claim 6 comprising from about 50 to about 53% by weight of R-1132a and from about 50 to about 47% by weight of R-116. ### Claim 8 (depends on 3) A composition according to claim 3 selected from the group consisting of compositions: (a) comprising about 48% by weight of R-1132a and about 52% by weight of R-116; (b) comprising about 52% by weight of R-1132a and about 48% by weight of R-116; (c) comprising about 56% by weight of R-1132a and about 44% by weight of R-116; (d) comprising about 53% by weight of R-1132a and about 47% by weight of R-116; (e) comprising about 51.1% by weight of R-1132a and about 48.9% by weight of R-116; (f) comprising about 50.3% by weight of R-1132a and about 49.7% by weight of R-116; (g) comprising about 54.7% by weight of R-1132a and about 45.3% by weight of R-116; (h) comprising about 59.6% by weight of R-1132a and about 40.4% by weight of R-116; (i) comprising about 49.8% by weight of R-1132a and about 50.2% by weight of R-116; and (j) comprising about 50% by weight of R-1132a and about 50% by weight of R-116. ### Claim 9 (depends on 1) A composition according to claim 1 consisting essentially of R-1132a and R-116. ### Claim 10 (depends on 1) A composition according to claim 1 whose volumetric refrigeration capacity is at least 90% of that of R-508B at comparable cycle conditions. ### Claim 11 (depends on 1) A composition comprising a lubricant and a composition according to claim 1. ### Claim 12 (depends on 11) A composition according to claim 11, wherein the lubricant is selected from the group consisting of mineral oil, silicone oil, polyalkyl benzenes (PABs), polyol esters (POEs), polyalkylene glycols (PAGs), polyalkylene glycol esters (PAG esters), polyvinyl ethers (PVEs), poly (alpha-olefins), and combinations thereof. ### Claim 13 (depends on 12) A composition according to claim 12, wherein the lubricant is selected from PAGs or POEs. ### Claim 14 (depends on 1) A heat transfer device comprising a composition according to claim 1. ### Claim 15 (depends on 14) A heat transfer device according to claim 14 wherein the heat transfer device is a refrigeration device and comprises an ultra-low temperature refrigeration system and/or a cascade system. ### Claim 16 (depends on 1) A method for cooling an article which comprises condensing a composition according to claim 1 and thereafter evaporating the composition in the vicinity of the article to be cooled. ### Claim 17 (depends on 1) A method for heating an article which comprises condensing a composition according to claim 1 in the vicinity of the article to be heated and thereafter evaporating the composition. ### Claim 18 (depends on 1) A method of retrofitting a heat transfer device comprising the step of removing an existing heat transfer composition, and introducing a composition according to claim 1. ### Claim 19 (depends on 18) A method of claim 18 wherein the heat transfer device is a refrigeration device. ### Claim 20 (depends on 18) A method according to claim 18, wherein the existing heat transfer composition is a refrigerant selected from the group consisting of R-508A, R-508B, R-23, and R-13B1.