Invention Grant
- Patent Title: Composition containing refrigerant and application of said composition
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Application No.: US16497536Application Date: 2018-04-19
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Publication No.: US11034871B2Publication Date: 2021-06-15
- Inventor: Mitsushi Itano , Shun Ohkubo , Hitomi Kuroki , Tatsumi Tsuchiya , Kenji Gobou
- Applicant: DAIKIN INDUSTRIES, LTD.
- Applicant Address: JP Osaka
- Assignee: DAIKIN INDUSTRIES, LTD.
- Current Assignee: DAIKIN INDUSTRIES, LTD.
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JPJP2017-084532 20170421
- International Application: PCT/JP2018/016070 WO 20180419
- International Announcement: WO2018/194113 WO 20181025
- Main IPC: C09K5/04
- IPC: C09K5/04 ; C10M107/24 ; C10M107/32 ; C10M107/34 ; C10N40/30

Abstract:
This invention provides a composition comprising a refrigerant, the composition being non-flammable like R404A (R125/R134a/R143a=44/4/52 wt %), and having a refrigerating capacity that can replace that of R404A, a COP that is equal or superior to that of R404A, and a GWP of 1500 or less. Specifically, the invention provides a composition comprising a refrigerant, the refrigerant comprising a mixture of fluorinated hydrocarbons, the mixture comprising difluoromethane (R32), pentafluoroethane (R125), and 1,1,1,2-tetrafluoroethane (R134a) at specific concentrations, the fluorinated hydrocarbons contained in the mixture having a specific composition ratio. This composition is for use as an alternative refrigerant for R22 or an alternative refrigerant for R404A.
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