IP Library › Granted Patent US 10,414,705
Granted Patent B2
US 10,414,705 · App. 15/420,574 · Granted Sep 17, 2019

Process for producing 2,3,3,3-tetrafluoropropene

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Quick Facts
Patent No.
US 10,414,705
App. No.
15/420,574
Granted
Sep 17, 2019
Kind
B2
Abstract

The present invention discloses a manufacturing process to produce high purity 1234yf from 245eb, which preferably includes the removal of impurities present in 245eb raw material, the dehydrofluorination of 245eb, and the removal of impurities present in final crude product. The disclosed manufacturing process allows the production of a 1234yf product with lower the levels of 1225ye and/or trifluoropropene, preferably in amounts of less than about 500, and 50 ppm, respectively.

Claims (11)

1. A composition comprising i at least 50% by weight 2,3,3,3-tetrafluoropropene (1234yf), (ii) 1,2,3,3,3-pentafluoropropene (1225ye) and (iii) trifluoropropyne, wherein the composition comprises less than about 500 ppm 1,2,3,3,3-pentafluoropropene (1225ye) and less than about 50 ppm trifluoropropyne.

2. The composition of claim 1 , comprising at least 99.9% by weight 2,3,3,3-tetrafluoropropene (1234yf).

3. The composition of claim 1 , comprising about 10 ppm trifluoropropyne.

4. The composition of claim 1 , comprising about 100 ppm 1,2,3,3,3-pentafluoropropene (1225ye).

5. The composition of claim 1 , comprising about 100 ppm 1,2,3,3,3-pentafluoropropene (1225ye) and about 10 ppm trifluoropropyne.

6. The composition of claim 1 , comprising at least 99.9% by weight 2,3,3,3-tetrafluoropropene (1234yf) and comprising from trace amounts to not more than 0.1% by weight of any other compounds.

7. The composition of claim 1 , comprising less than 200 ppm 1,2,3,3,3-pentafluoropropene (1225ye).

8. The composition of claim 1 , comprising less than 100 ppm 1,2,3,3,3-pentafluoropropene (1225ye).

9. A composition comprising at least 50% by weight 2,3,3,3-tetrafluoropropene (1234yf), from trace amounts to 500 ppm 1,2,3,3,3-pentafluoropropene (1225ye) and from trace amounts to 50 ppm trifluoropropene.

10. The composition of claim 9 , comprising less than 200 ppm 1,2,3,3,3-pentafluoropropene (1225ye).

11. The composition of claim 9 , comprising less than 100 ppm 1,2,3,3,3-pentafluoropropene (1225ye).

Assignments (2)
SECURITY INTEREST Recorded Jan 12, 2026
From: SOLSTICE ADVANCED MATERIALS US, INC.
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 074569/0260 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 4, 2025
From: WANG, HAIYOU; TUNG, HSUEH SUNG; SINGH, RAJIV R.; SHANKLAND, IAN
To: HONEYWELL INTERNATIONAL INC.
Reel/Frame 070400/0647 →