IP Library › Granted Patent US 10,487,031
Granted Patent B2
US 10,487,031 · App. 16/126,442 · Granted Nov 26, 2019

Azeotropic compositions comprising hydrogen fluoride and fluorocarbons

Inventors: Sheng Peng (Hockessin, DE); Jeffrey Knapp (Wilmington, DE)
Assignee: THE CHEMOURS COMPANY FC, LLC
C07C21/18C01B7/191C07C19/10C07C19/12C09K5/044C09K5/045H01B3/56C09K2205/126C09K2205/32
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Quick Facts
Patent No.
US 10,487,031
App. No.
16/126,442
Granted
Nov 26, 2019
Kind
B2
Abstract

The present application discloses compositions comprising hydrogen fluoride and fluorinated compounds (e.g., hydrofluorocarbons), wherein the fluorinated compound is present in the composition in an amount effective to form an azeotrope composition or azeotrope-like composition with the hydrogen fluoride.

Claims (27)

1. A composition comprising hydrogen fluoride and a compound selected from the group consisting of:

3,3,3-trifluoro-2-(trifluoromethyl)prop-1-ene;

2-chloro-1,1,1,4,4,4-hexafluorobutane; and

1,1,1,2,4,4,4-heptafluorobutane;

wherein the 3,3,3-trifluoro-2-(trifluoromethyl)prop-1-ene, 2-chloro-1,1,1,4,4,4-hexafluorobutane, or 1,1,1,2,4,4,4-heptafluorobutane is present in an amount effective to form an azeotrope or an azeotrope-like composition with the hydrogen fluoride.

2. The composition of claim 1 , wherein the composition comprises hydrogen fluoride and 3,3,3-trifluoro-2-(trifluoromethyl)prop-1-ene, wherein the 3,3,3-trifluoro-2-(trifluoromethyl)prop-1-ene is present in an amount effective to form an azeotrope or an azeotrope-like composition with the hydrogen fluoride.

3. The composition of claim 2 , wherein the composition comprises from about 45 to about 72 mole percent hydrogen fluoride and from about 55 to about 28 mole percent 3,3,3-trifluoro-2-(trifluoromethyl)prop-1-ene.

4. The composition of claim 3 , wherein the composition has a boiling point of from about −30° C. to about 140° C. at a pressure of from about 3 psia to about 800 psia.

5. The composition of claim 2 , wherein the is a homogeneous azeotrope composition or a homogeneous azeotrope-like composition.

6. The composition of claim 1 , wherein the composition comprises hydrogen fluoride and 2-chloro-1,1,1,4,4,4-hexafluorobutane, wherein the 2-chloro-1,1,1,4,4,4-hexafluorobutane is present in an amount effective to form an azeotrope or an azeotrope-like composition with the hydrogen fluoride.

7. The composition of claim 6 , wherein the composition comprises from about 77 to about 97 mole percent hydrogen fluoride and from about 23 to about 3 mole percent 2-chloro-1,1,1,4,4,4-hexafluorobutane.

8. The composition of claim 7 , wherein the composition has a boiling point of from about −30° C. to about 140° C. at a pressure of from about 1 psia to about 510 psia.

9. The composition of claim 6 , wherein the composition is a heterogeneous azeotrope composition or a heterogeneous azeotrope-like composition.

10. The composition of claim 1 , wherein the composition comprises hydrogen fluoride and 1,1,1,2,4,4,4-heptafluorobutane, wherein the 1,1,1,2,4,4,4-heptafluorobutane is present in an amount effective to form an azeotrope or an azeotrope-like composition with the hydrogen fluoride.

11. The composition of claim 10 , wherein the composition comprises from about 68 to about 89 mole percent hydrogen fluoride and from about 32 to about 11 mole percent 1,1,1,2,4,4,4-heptafluorobutane.

12. The composition of claim 11 , wherein the composition has a boiling point of from about −30° C. to about 140° C. at a pressure of from about 1 psia to about 665 psia.

13. The composition of claim 10 , wherein the composition is a heterogeneous azeotrope composition or a heterogeneous azeotrope-like composition.

14. The composition of claim 1 , wherein the composition is a homogeneous azeotrope composition or a homogeneous azeotrope-like composition.

15. The composition of claim 1 , wherein the composition is a heterogeneous azeotrope composition or a heterogeneous azeotrope-like composition.

16. A composition, comprising from about 52 to about 76 mole percent hydrogen fluoride and from about 48 to about 24 mole percent (E)-1,1,1,4,4,4-hexafluorobut-2-ene, wherein the (E)-1,1,1,4,4,4-hexafluorobut-2-ene is present in an amount effective to form an azeotrope or an azeotrope-like composition with the hydrogen fluoride.

17. The composition of claim 16 , wherein the composition has a boiling point of from about −30° C. to about 110° C. at a pressure of from about 3 psia to about 812 psia.

18. The composition of claim 16 , wherein the composition is a homogeneous azeotrope composition or a homogeneous azeotrope-like composition.

19. The composition of claim 16 , wherein the composition is a heterogeneous azeotrope composition or a heterogeneous azeotrope-like composition.

20. A composition, comprising from about 59 to about 92 mole percent hydrogen fluoride and from about 41 to about 8 mole percent (Z)-1,1,1,4,4,4-hexafluorobut-2-ene, wherein the (Z)-1,1,1,4,4,4-hexafluorobut-2-ene is present in an amount effective to form an azeotrope or an azeotrope-like composition with the hydrogen fluoride.

21. The composition of claim 20 , wherein the composition has a boiling point of from about −30° C. to about 130° C. at a pressure of from about 2 psia to about 836 psia.

22. The composition of claim 20 , wherein the is a homogeneous azeotrope composition or a homogeneous azeotrope-like composition.

23. The composition of claim 20 , wherein the composition is a heterogeneous azeotrope composition or a heterogeneous azeotrope-like composition.

Assignments (2)
SECURITY INTEREST Recorded May 3, 2019
From: THE CHEMOURS COMPANY FC, LLC
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 049080/0482 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 22, 2019
From: PENG, SHENG; KNAPP, JEFFREY
To: THE CHEMOURS COMPANY FC, LLC
Reel/Frame 048667/0233 →
Cited By (1)
US 12,456,851