Heat transfer fluid

Patent metadata

Field	Value
Publication number	US-2017145276-A1
Application number	US-201715396855-A
Country	US
Kind code	A1
Filing date	Jan 3, 2017
Priority date	Oct 8, 2008
Publication date	May 25, 2017
Grant date	—

Abstract

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.

First claim

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.

Assignees

• Arkema France

Inventors

• Rached Wissam

Classifications

• C09K2205/40

  Replacement mixtures · CPC title

• C09K2205/126

  Unsaturated fluorinated hydrocarbons · CPC title

• C09K5/045 Primary

  containing only fluorine as halogen · CPC title

• C10M2203/065

  used as base material · CPC title

• C09K2205/43

  Type R22 · CPC title