IP Library › Granted Patent US 10,662,357
Granted Patent B2
US 10,662,357 · App. 16/034,539 · Granted May 26, 2020

Stable 2,3,3,3-tetrafluoropropene composition

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Quick Facts
Patent No.
US 10,662,357
App. No.
16/034,539
Granted
May 26, 2020
Kind
B2
Abstract

A stable composition (CS) including at least x wt.-% 2,3,3,3-tetrafluoropropene (99.8 ÿ x<100), at most y wt.-% unsaturated compound(s) (Ia) (0<y ÿ 0.2) selected from among 3,3,3-trifluoropropene (HFO-1243zf) and the positional isomers of 2,3,3,3-tetrafluoropropene, such as 1,3,3,3-tetrafluoropropene (isomers Z and E) and 1,1,2,3-tetrafluoropropene, and, optionally, at most 500 ppm of 3,3,3-trifluoropropyne and/or at most 200 ppm 1,1,1,2,3-pentafluoropropene (HFO-1225ye).

Claims (13)

1. A stable composition comprising 99.8 x<100% by weight of 2,3,3,3-tetrafluoropropene, 0<y≤0.15% by weight of the positional isomers of 2,3,3,3-tetrafluoropropene, 3,3,3-trifluoropropene (HFO-1243zf), and 3,3,3-trifluoropropyne and/or 1,1,1,2,3-pentafluoropropene (HFO-1225ye), wherein the composition contains at most 500 ppm of 3,3,3-trifluoropropyne and/or at most 200 ppm of 1,1,1,2,3-pentafluoropropene (HFO-1225ye).

2. The stable composition according to claim 1 , further comprising at least one compound (Ib) selected from the group consisting of 1,1,1,2-tetrafluoropropane (HFC-254eb), 1,1,1,2,3-pentafluoropropane (HFC-245eb), 1,1,1,2-tetrafluoroethane (HFC-134a), 1,1,2-trifluoroethane (HFC-143), 1,1,1,2,3,3-hexafluoropropane, hexafluoropropene, cyclohexafluoropropene, 1,1,1,3,3-pentafluoropropene (HFO-1225zc), and mixtures thereof.

3. The stable composition according to claim 2 , wherein the compound(s) (Ib) represent(s) at most 500 ppm of the stable composition.

4. The stable composition according to claim 1 , wherein the stable composition comprises at least 99.85% by weight of 2,3,3,3-tetrafluoropropene, 0<y≤0.1% by weight of the positional isomers of 2,3,3,3-tetrafluoropropene, 3,3,3-trifluoropropene (HFO-1243zf), and 3,3,3-trifluoropropyne and/or 1,1,1,2,3-pentafluoropropene (HFO-1225ye), wherein the composition contains at most 250 ppm of 3,3,3-trifluoropropyne and/or at most 50 ppm of 1,1,1,2,3-pentafluoropropene (HFO-1225ye).

5. The stable composition according to claim 1 , wherein the stable composition comprises at least 99.9% by weight of 2,3,3,3-tetrafluoropropene, 0<y≤0.05% by weight of the positional isomers of 2,3,3,3-tetrafluoropropene, 3,3,3-trifluoropropene (HFO-1243zf), and 3,3,3-trifluoropropyne and/or 1,1,1,2,3-pentafluoropropene (HFO-1225ye), wherein the composition contains at most 200 ppm of 3,3,3-trifluoropropyne and/or at most 5 ppm of 1,1,1,2,3-pentafluoropropene (HFO-1225ye).

6. The stable composition according to claim 1 , wherein the stable composition comprises from 99.85 to 99.98% by weight of 2,3,3,3-tetrafluoropropene, from 0<y≤0.1% by weight of the positional isomers of 2,3,3,3-tetrafluoropropene, 3,3,3-trifluoropropene (HFO-1243zf), and 3,3,3-trifluoropropyne and/or 1,1,1,2,3-pentafluoropropene (HFO-1225ye) and/or compounds (Ib), wherein the composition contains at most 200 ppm of 3,3,3-trifluoropropyne and/or at most 5 ppm of 1,1,1,2,3-pentafluoropropene (HFO-1225ye) and/or at most 400 ppm of compounds (Ib).

7. The stable composition according to claim 1 , wherein the stable composition is configured for use as a heat transfer agent in stationary or motor-vehicle air conditioning, refrigeration and heat pumps.

8. The stable composition according to claim 1 , wherein the stable composition further comprises a lubricant.

9. The stable composition according to claim 8 , wherein the lubricant is selected from the group consisting of polyol esters (POEs), polyalkylene glycols (PAGs), polyalkylene glycol esters and polyvinyl ethers (PVEs).

10. The stable composition according to claim 1 , wherein the positional isomers of 2,3,3,3-tetrafluoropropene comprise E-1,3,3,3-tetrafluoropropene, Z-1,3,3,3-tetrafluoropropene, and 1,1,2,3-tetrafluoropropene.

11. 2,3,3,3-Tetrafluoropropene which has a purity of greater than or equal to 99.8% by weight and less than 100% by weight and which comprises 3,3,3-trifluoropropene (HFO-1243zf), at most 0.15% by weight of the positional isomers of 2,3,3,3-tetrafluoropropene, and 3,3,3-trifluoropropyne and/or 1,1,1,2,3-pentafluoropropene and/or compounds (Ib), wherein the 2,3,3,3-tetrafluoropropene contains at most 500 ppm of 3,3,3-trifluoropropyne and/or at most 200 ppm of 1,1,1,2,3-pentafluoropropene and/or at most 500 ppm of compounds (Ib).

12. 2,3,3,3-Tetrafluoropropene according to claim 11 , characterized by a purity of greater than or equal to 99.9% by weight and less than 100% by weight and comprising 3,3,3-trifluoropropene (HFO-1243zf), at most 0.05% by weight of the positional isomers of 2,3,3,3-tetrafluoropropene, and 3,3,3-trifluoropropyne and/or 1,1,1,2,3-pentafluoropropene and/or compounds (Ib), wherein the 2,3,3,3-tetrafluoropropene contains at most 200 ppm of 3,3,3-trifluoropropyne and/or at most 5 ppm of 1,1,1,2,3-pentafluoropropene and/or at most 500 ppm of compounds (Ib).

13. 2,3,3,3-Tetrafluoropropene according to claim 11 , wherein the positional isomers of 2,3,3,3-tetrafluoropropene comprise E-1,3,3,3-tetrafluoropropene, and Z-1,3,3,3-tetrafluoropropene, and 1,1,2,3-tetrafluoropropene.

Assignments (2)
CHANGE OF ADDRESS Recorded Jul 4, 2025
From: ARKEMA FRANCE
To: ARKEMA FRANCE
Reel/Frame 071814/0739 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 10, 2020
From: BOUSSAND, BEATRICE
To: ARKEMA FRANCE
Reel/Frame 052369/0275 →