The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 09, 2019
Filed:
May. 08, 2018
The Chemours Company Fc, Llc, Wilmington, DE (US);
Mario Joseph Nappa, Leesburg, FL (US);
Xuehui Sun, Swedesboro, NJ (US);
David Richard Corbin, West Chester, PA (US);
THE CHEMOURS COMPANY FC, LLC, Wilmington, DE (US);
Abstract
This disclosure relates to processes which involve: contacting a mixture comprising at least one fluoroolefin and at least one RC≡CX impurity with at least one zeolite to reduce the concentration of the at least one RC≡CX impurity in the mixture; wherein Ris a straight-chain perfluorinated alkyl group, and X is H, F, Cl, Br or I; and the at least one zeolite is selected from the group consisting of zeolites having pore opening of at least 4 Angstroms and no more than about 5 Angstroms, zeolites having pore opening of at least about 5 Angstroms and Sanderson electronegativity of no more than about 2.6, and mixtures thereof; provided that the at least one zeolite is not zeolite 4A. This disclosure also relates to processes for making at least one hydrotetrafluoropropene product selected from the group consisting of CFCF═CH, CFCH═CHF, and mixtures thereof; and relates to processes for making at least one hydrochlorotrifluoropropene product selected from the group consisting of CFCCl═CH, CFCH═CHCl, and mixtures thereof.