Patent ID: 11939515
Assignee: DAIKIN INDUSTRIES, LTD.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  F | IPC C  F

Claim 10:
11. A composition comprising a refrigerant, the refrigerant comprising difluoromethane (HFC-32), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and at least one of 1,1-difluoroethylene (HFO-1132a) and tetrafluoroethylene (FO-1114), wherein
the refrigerant comprises HFC-32, HFO-1234yf, and HFO-1132a,
when the mass % of HFC-32, HFO-1132a, and HFO-1234yf based on their sum in the refrigerant is respectively represented by x, y, and z, coordinates (x,y,z) in a ternary composition diagram in which the sum of HFC-32, HFO-1132a, and HFO-1234yf is 100 mass % are within the range of a figure surrounded by line segments PF, FG, GO, OB′, and B′P that connect the following 5 points:
point P (59.1, 23.2, 17.7),
point F (49.1, 25.9, 25.0),
point G (0.0, 48.6, 51.4),
point O (0.0, 0.0, 100), and
point B′ (59.0, 0.0, 40.2),
or on the line segments (excluding the line segments GO and OB'), the line segment PF is represented by coordinates
(y=0.0021x2−0.4975x+45.264),

the line segment FG is represented by coordinates
(y=0.0031x2−0.6144x+48.6), and

the line segments GO, OB', and B′P are straight lines.