HEAT TRANSFER FLUID
Compositions which are based on tetrafluoropropene and more particularly relates to compositions inclduing 60% to 90% by weight of 2,3,3,3-tetrafluoropropene and 10% to 40% by weight of at least one compound selected from difluoroethane and difluoromethane, which can be used as a heat transfer fluid. The compositions may include 60% to 79% by weight of 2,3,3,3-tetrafluoropropene and 21% to 40% by weight of a compound selected from difluoroethane and difluoromethane.
1 - 12 . (canceled)
13 . A heat transfer fluid comprising:
60% to 90% by weight of 2,3,3,3-tetrafluoropropene; and
10% to 40% by weight of a mixture of difluoromethane and 1,1-difluoroethane.
14 . The heat transfer fluid of claim 13 comprising:
60% to 79% by weight of 2,3,3,3-tetrafluoropropene; and
21% to 40% by weight of a mixture of difluoromethane and 1,1-difluoroethane.
15 . The heat transfer fluid of claim 13 comprising:
60% to 70% by weight of 2,3,3,3-tetrafluoropropene; and
30% to 40% by weight of a mixture of difluoromethane and 1,1-difluoroethane.
16 . The heat transfer fluid of claim 13 comprising:
60% to 65% by weight of 2,3,3,3-tetrafluoropropene; and
35% to 40% by weight of a mixture of difluoromethane and 1,1-difluoroethane.
17 . A composition comprising the heat transfer fluid of claim 13 and a stabilizer selected from the group consisting of nitromethane, ascorbic acid, terephthalic acid, azoles, phenolic compounds, epoxides, phosphites, phosphates, phosphonates, thiols and lactones.
18 . The composition of claim 17 , wherein the stabilizer represents at most 5% by weight relative to the heat transfer fluid.
19 . A composition comprising the heat transfer fluid of claim 13 and a lubricant selected from the group consisting of mineral oil, alkylbenzene, polyalkylene glycol and polyvinyl ether.
20 . A composition comprising the heat transfer fluid of claim 16 and a stabilizer selected from the group consisting of nitromethane, ascorbic acid, terephthalic acid, azoles, phenolic compounds, epoxides, phosphites, phosphates, phosphonates, thiols and lactones.
21 . The composition of claim 20 , wherein the stabilizer represents at most 5% by weight relative to the heat transfer fluid.
22 . A composition comprising the heat transfer fluid of claim 16 and a lubricant selected from the group consisting of mineral oil, alkylbenzene, polyalkylene glycol and polyvinyl ether.
23 . The heat transfer fluid of claim 16 consisting of:
60% to 65% by weight of 2,3,3,3-tetrafluoropropene; and
35% to 40% by weight of a mixture of difluoromethane and 1,1-difluoroethane.
24 . A heat transfer fluid comprising:
60% to 80% by weight of 2,3,3,3-tetrafluoropropene;
5% to 35% by weight of difluoromethane; and
5% to 20% by weight of 1,1-difluoroethane,
wherein the total amount of difluoromethane and 1,1-difluoroethane is 15% to 40% by weight of the composition.
25 . The heat transfer fluid of claim 24 comprising:
60% to 80% by weight of 2,3,3,3-tetrafluoropropene;
10% to 25% by weight of difluoromethane;
5% to 20% by weight of 1,1-difluoroethane; and
optionally a stabilizer.
26 . A composition comprising the heat transfer fluid of claim 24 and a stabilizer selected from the group consisting of nitromethane, ascorbic acid, terephthalic acid, azoles, phenolic compounds, epoxides, phosphites, phosphates, phosphonates, thiols and lactones.
27 . The composition of claim 26 , wherein the stabilizer represents at most 5% by weight relative to the heat transfer fluid.
28 . A composition comprising the heat transfer fluid of claim 24 and a lubricant selected from the group consisting of mineral oil, alkylbenzene, polyalkylene glycol and polyvinyl ether.