Compositions comprising difluoromethane, pentafluoroethane, tetrafluoropropene, and tetrafluoroethane and uses thereof

Patent metadata

Field	Value
Publication number	US-2016244651-A1
Application number	US-201415026067-A
Country	US
Kind code	A1
Filing date	Oct 6, 2014
Priority date	Oct 10, 2013
Publication date	Aug 25, 2016
Grant date	—

Abstract

Disclosed herein is a composition comprising (a) from 1 to 29 weight percent difluoromethane; (b) from 1 to 19 weight percent pentafluoroethane; (c) from 9 to 42 weight percent 1,1,2,2-tetrafluoroethane, 1,1,1,2-tetrafluoroethane, or a mixture thereof; and (d) from 34 to 68 weight percent 2,3,3,3-tetrafluoropropene, E-1,3,3,3-tetrafluoropropene or mixture thereof; wherein when the composition contains 2,3,3,3-tetrafluoropropene, the composition also contains at least some 1,1,2,2-tetrafluoroethane; wherein the ratio of component (a) to component (b) is at most 1.5:1; and wherein the ratio of component (c) to component (d) is at least 0.04:1. The compositions are useful in methods for producing cooling and heating, methods for producing air conditioning, methods for replacing HCFC-22, R-410A, R-407C, HFC-134a, CFC-12, HCFC-22 and HCFC-124 and in heat transfer systems including heat pumps and air conditioners.

First claim

1 . A composition comprising:
a. from 1 to 29 weight percent difluoromethane; b. from 1 to 19 weight percent pentafluoroethane; c. from 9 to 42 weight percent 1,1,2,2-tetrafluoroethane, or a mixture thereof with 1,1,1,2-tetrafluoroethane; and d. from 34 to 68 weight percent 2,3,3,3-tetrafluoropropene, E-1,3,3,3-tetrafluoropropene or mixture thereof; wherein the ratio of component (a) to component (b) is at most 1.5:1; and wherein the ratio of component (c) to component (d) is at least 0.04:1.

2 . The composition of claim 1 consisting of (a) difluoromethane, (b) pentafluoroethane, (c) 1,1,2,2-tetrafluoroethane and (d) E-1,3,3,3-tetrafluoropropene.

3 . (canceled)

4 . The composition of claim 1 consisting of (a) difluoromethane, (b) pentafluoroethane, (c) 1,1,2,2-tetrafluoroethane and (d) 2,3,3,3-tetrafluoropropene.

5 . The composition of claim 1 consisting of (a) difluoromethane, (b) pentafluoroethane, (c) 1,1,2,2-tetrafluoroethane and 1,1,1,2-tetrafluoroethane, and (d) 2,3,3,3-tetrafluoropropene.

6 .- 12 . (canceled)

13 . The composition of claim 1 , comprising
a. from 3 weight percent to 23 weight percent difluoromethane; b. from 2 weight percent to 16 weight percent pentafluoroethane: c. from 26 weight percent to 42 weight percent 1,1,2,2-tetrafluoroethane; and d. from 34 weight percent to 53 weight percent 2,3,3,3-tetrafluoropropene.

14 . The composition of claim 13 consisting of (a) difluoromethane, (b) pentafluoroethane, (c) 1,1,2,2-tetrafluoroethane and (d) 2,3,3,3-tetrafluoropropene.

15 . The composition of claim 1 , comprising
a. from 10 weight percent to 28 weight percent difluoromethane; b. from 6 weight percent to 19 weight percent pentafluoroethane: c. from 16 weight percent to 25 weight percent 1,1,2,2-tetrafluoroethane; and d. from 38 weight percent to 58 weight percent E-1,3,3,3-tetrafluoropropene.

16 . The composition of claim 15 consisting of (a) difluoromethane, (b) pentafluoroethane, (c) 1,1,2,2-tetrafluoroethane and (d) E-1,3,3,3-tetrafluoropropene.

17 .- 20 . (canceled)

21 . The composition of claim 1 , comprising
a. 10-14 weight percent difluoromethane; b. 13-16 weight percent pentafluoroethane; c. 2-30 weight percent 1,1,2,2-tetrafluoroethane and 0-29 weight percent 1,1,1,2-tetrafluoroethane; and d. 40-50 weight percent 2,3,3,3-tetrafluoropropene.

22 . The composition of claim 21 , comprising
a. 11-13 weight percent difluoromethane; b. 14-15 weight percent pentafluoroethane; c. 5-28 weight percent 1,1,2,2-tetrafluoroethane and 15-29 weight percent 1,1,1,2-tetrafluoroethane; and d. 44-46 weight percent 2,3,3,3-tetrafluoropropene.

23 . The composition of claim 21 consisting of (a) difluoromethane, (b) pentafluoroethane, (c) 1,1,2,2-tetrafluoroethane and 1,1,1,2-tetrafluoroethane and (d) 2,3,3,3-tetrafluoropropene.

24 . A method for producing heating in a heat pump comprising extracting heat from a working fluid comprising a composition of claim 1 , in a working fluid cooler, thereby producing a cooled working fluid.

25 . A method for producing heating in a heat pump wherein heat is exchanged between at least two cascade heating stages comprising absorbing heat in a first working fluid at a selected lower temperature in a first cascade heating stage and transferring this heat to a second working fluid of a second cascade heating stage that rejects heat at a higher working fluid temperature; wherein at least one of the first working fluid or the second working fluid comprises a composition of claim 1 .

26 . A method for producing cooling comprising evaporating a composition of claim 1 in the vicinity of a body to be cooled and thereafter condensing said composition.

27 . A method for producing air conditioning in high ambient temperatures comprising evaporating a composition of claim 1 and thereafter condensing said composition.

28 .- 31 . (canceled)

32 . A heat transfer system comprising an evaporator, compressor, condenser and an expansion device; wherein said system contains a composition of claim 1 .

33 .- 50 . (canceled)

51 . A refrigerant composition comprising difluoromethane, pentafluoroethane, 2,3,3,3-tetrafluoropropene and 1,1,2,2-tetrafluoroethane or mixtures of 1,1,2,2-tetrafluoroethane and 1,1,1,2-tetrafluoroethane, wherein the composition comprises:
A. 10-14 weight percent difluoromethane; B. 13-16 weight percent pentafluoroethane; C. 0-29 weight percent 1,1,1,2-tetrafluoroethane; D. 2-30 weight percent 1,1,2,2-tetrafluoroethane; and E. 40-50 weight percent 2,3,3,3-tetrafluoropropene; and wherein said composition is used in air conditioning equipment at ambient temperature of 35° C. or higher.

52 . A method of producing cooling comprising evaporating the composition of claim 51 in the vicinity of a body to be cooled and thereafter condensing said composition.

53 . A method for producing heating in a heat pump comprising extracting heat from a working fluid comprising a composition of claim 51 , in a heat exchanger, thereby producing a cooled working fluid.

54 .- 56 . (canceled)

Assignees

• Chemours Co Fc Llc

Inventors

• Leck Thomas Joseph
• Kontomaris Konstantinos
• Naicker Pavanandan Kista

Classifications

• B60H1/3228

  characterised by refrigerant circuit configurations · CPC title

• B60H1/323

  characterised by comprising auxiliary or multiple systems, e.g. plurality of evaporators, or by involving auxiliary cooling devices · CPC title

• C09K2205/22

  All components of a mixture being fluoro compounds · CPC title

• C09K2205/126

  Unsaturated fluorinated hydrocarbons · CPC title

• Y02B30/52

  Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency · CPC title