US 12,421,181 B2
Process for producing 1,1,1,4,4,4-hexafluorobut-2-ene
Sheng Peng, Hockessin, DE (US); and Allen Capron Sievert, Elkton, MD (US)
Assigned to THE CHEMOURS COMPANY FC, LLC, Wilmington, DE (US)
Appl. No. 17/601,498
Filed by THE CHEMOURS COMPANY FC, LLC, Wilmington, DE (US)
PCT Filed Apr. 3, 2020, PCT No. PCT/US2020/026570
§ 371(c)(1), (2) Date Oct. 5, 2021,
PCT Pub. No. WO2020/206247, PCT Pub. Date Oct. 8, 2020.
Claims priority of provisional application 62/829,832, filed on Apr. 5, 2019.
Prior Publication US 2022/0162141 A1, May 26, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C07C 17/21 (2006.01); A62D 1/00 (2006.01); C08J 9/14 (2006.01); C09K 5/04 (2006.01)
CPC C07C 17/21 (2013.01) [A62D 1/0057 (2013.01); C08J 9/146 (2013.01); C08J 9/149 (2013.01); C09K 5/044 (2013.01); C08J 2203/162 (2013.01); C08J 2203/202 (2013.01); C09K 2205/126 (2013.01); C09K 2205/22 (2013.01)] 12 Claims
 
1. A process for producing E-1,1,1,4,4,4-hexafluorobut-2-ene comprising contacting 1,1,2,4,4-pentachlorobuta-1,3-diene with HF in the vapor phase in the presence of a fluorination catalyst to produce a product mixture comprising E-1,1,1,4,4,4-hexafluorobut-2-ene, wherein the process is performed at a temperature in the range of 275 to 375° C.