IP Library › Granted Patent US 8,318,039
Granted Patent B2
US 8,318,039 · App. 13/001,867 · Granted Nov 27, 2012

Refrigerant composition comprising 1,1,1,2-tetrafluoroethane (HFC134a) and 2,3,3,3-tetrafluoropropene (HFO1234yf)

Assignee: Daikin Industries, Ltd.
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Quick Facts
Patent No.
US 8,318,039
App. No.
13/001,867
Granted
Nov 27, 2012
Kind
B2
Abstract

The present invention provides a non-flammable refrigerant, which is excellent in handleability while retaining the refrigerating capacity. Specifically, the present invention relates to a refrigerant composition comprising 36 to 50 mass % of 1,1,1,2-tetrafluoroethane (HFC134a) and 50 to 64 mass % of 2,3,3,3-tetrafluoropropene (HFO1234yf).

Claims (9)

1. A composition comprising refrigerants, wherein the refrigerants consist of 36 to 50 mass % of 1,1,1,2-tetrafluoroethane (HFC134a) and 50 to 64 mass % of 2,3,3,3-tetrafluoropropene (HFO1234yf).

2. The composition according to claim 1 , wherein the refrigerants consist of 36 to 42 mass % of 1,1,1,2-tetrafluoroethane (HFC134a) and 58 to 64 mass % of 2,3,3,3-tetrafluoropropene (HFO1234yf).

3. The composition according to claim 1 , which further comprises a polymerization inhibitor.

4. The composition according to claim 1 , which further comprises a drying agent.

5. The composition according to claim 1 , which further comprises a stabilizer.

6. A method of operating a refrigerator having a compressor comprising circulating the composition according to claim 1 through the compressor.

7. A method of producing the composition according to claim 1 comprising mixing 36 to 50 mass % of 1,1,1,2-tetrafluoroethane (HFC134a) with 50 to 64 mass % of 2,3,3,3-tetrafluoropropene (HFO1234yf).

8. A refrigerator comprising the composition according to claim 1 .

9. The composition according to claim 1 , wherein the composition is nonflammable.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 3, 2011
From: SHIBANUMA, TAKASHI; TSUCHIYA, TATSUMI
To: DAIKIN INDUSTRIES, LTD.
Reel/Frame 025574/0420 →
Continuity (2)
Provisional Application 61129500 · Jul 1, 2008
Related Publication 20110108757A1 · May 12, 2011