	US 11,834,601 B2
	Composition containing refrigerant, refrigeration method using said composition, method for operating refrigeration device, and refrigeration device
Shun Ohkubo, Osaka (JP); Mitsushi Itano, Osaka (JP); Yuuki Yotsumoto, Osaka (JP); Akihito Mizuno, Osaka (JP); Tomoyuki Gotou, Osaka (JP); and Yasufu Yamada, Osaka (JP)
Assigned to DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed on Jul. 13, 2021, as Appl. No. 17/374,253.
Application 17/374,253 is a continuation of application No. PCT/JP2019/047097, filed on Dec. 2, 2019.
Claims priority of application No. 2019-013974 (JP), filed on Jan. 30, 2019.
Prior Publication US 2021/0340422 A1, Nov. 4, 2021
Int. Cl. C09K 5/04 (2006.01); C10M 107/24 (2006.01); C10M 107/34 (2006.01); C10N 40/30 (2006.01)

CPC C09K 5/045 (2013.01) [C10M 107/24 (2013.01); C10M 107/34 (2013.01); C09K 2205/122 (2013.01); C09K 2205/126 (2013.01); C09K 2205/22 (2013.01); C10M 2209/043 (2013.01); C10M 2209/1023 (2013.01); C10M 2209/1033 (2013.01); C10N 2040/30 (2013.01)]

12 Claims

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 %).