IP Library › Granted Patent US 10,493,443
Granted Patent B2
US 10,493,443 · App. 15/666,770 · Granted Dec 3, 2019

Selective catalytic dehydrochlorination of hydrochlorofluorocarbons

Inventor: Mario Joseph Nappa (Newark, DE)
Assignee: THE CHEMOURS COMPANY FC, LLC
B01J35/1014B01J23/26B01J37/26C07C17/25B01J27/132
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Quick Facts
Patent No.
US 10,493,443
App. No.
15/666,770
Granted
Dec 3, 2019
Kind
B2
Abstract

A dehydrochlorination process is disclosed. The process involves contacting R f CHClCH 2 Cl with a chromium oxyfluoride catalyst in a reaction zone to produce a product mixture comprising R f CCl═CH 2 , wherein R f is a perfluorinated alkyl group.

Claims (21)

1. A composition comprising R f CHClCH 2 Cl and a dehydrochiorination catalyst having the formula Cr 2 O x F y , wherein x+y/2=3, wherein R f is a perfluorination alkyl group.

2. The composition according to claim 1 wherein R f is CF 3 or ClF 2 CF 3 .

3. The composition according to claim 1 wherein HF is additionally present.

4. The composition according to claim 3 wherein the mole ratio of HF to R 1 CHClCH 2 Cl ranges from about 0.1:1 to about 50:1.

5. The composition according to claim 4 wherein the mole ratio HF to R 1 CHClCH 2 Cl ranges from about 5:1 to about 25:1.

6. The composition according to claim 4 wherein the mole ratio HF to R f CHClCH 2 Cl ranges from about 0.1:1 to no more than 0.9:1.

7. The composition according to claim 4 wherein the mole ratio HF to R f CHClCH 2 Cl ranges from about 0.1:1 to no more than 0.5:1.

8. The composition according to claim 4 wherein the mole ratio HF to R f CHClCH 2 Cl is 0.1:1.

9. The composition according to claim 1 wherein an inert gas is additionally present.

10. The composition according to claim 3 wherein an inert gas is additionally present.

11. The composition according to claim 1 wherein R f CCl═CH 2 is additionally present.

12. The composition according to claim 11 wherein R f CH═CHCl is additionally present.

13. The composition according to claim 4 wherein R f is CF 3 or CF 2 CF 3 .

14. The composition according to claim 11 wherein R f is CF 3 or CF 2 CF 3 .

15. The composition according to claim 11 , wherein R f CCl═CH 2 is 2-chloro-3,3,3-trifluoropropene.

16. The composition according to claim 1 wherein R f CHClCH 2 CL is CF 3 CHCLCH 2 CL.

17. The composition according to claim 16 wherein HF is additionally present and wherien the mole ratio of HF to CF 3 CHClCH 2 Cl ranges from about 0.1:1 to about 50:1.

18. The composition according to claim 17 wherein the mole ratio of HF to CF 3 CHClCh 2 Cl ranges from about 5:1 to about 25:1.

19. The composition according to claim 17 wherein the mole ratio of HF to CF 3 CHClCH 2 Cl ranges from about 0.1:1 to no more than 0.9:1.

20. The composition according to claim 17 where the mole ratio of HF to CF 3 CHClCH 2 Cl ranges from about 0.1:1 to no more than 0.5:1.

21. The composition according to claim 17 wherein the mole ratio of HF to CF 3 CHClCH 2 Cl is 0.1:1.

Assignments (3)
SECURITY INTEREST Recorded Apr 4, 2018
From: THE CHEMOURS COMPANY FC, LLC
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 045846/0011 →
RELEASE OF SECURITY INTEREST Recorded Apr 4, 2018
From: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
To: THE CHEMOURS COMPANY FC, LLC
Reel/Frame 045845/0913 →
SECURITY INTEREST Recorded Dec 1, 2017
From: THE CHEMOURS COMPANY FC, LLC; THE CHEMOURS COMPANY TT, LLC
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 044269/0559 →
Continuity (3)
Continuation 13397956 · Feb 16, 2012
Provisional Application 61444874 · Feb 21, 2011
Related Publication 20170333888A1 · Nov 23, 2017