Intellectual Property India Publishes Patent Application for 'Processes For Separation Of Mixtures Comprising 1,1,1,3-Tetrafluoropropane, 3,3,3-Trifluoropropene, And Hydrogen Fluoride And Azeotropes Thereof' Filed by The Chemours Company FC, LLC

MUMBAI, India, July 5 -- Intellectual Property India has published a patent application (202517056371 A) filed by The Chemours Company FC, LLC, Wilmington, U.S.A., on June 11, for 'processes for separation of mixtures comprising 1,1,1,3-tetrafluoropropane, 3,3,3-trifluoropropene, and hydrogen fluoride and azeotropes thereof.'

Inventor(s) include Sun, Xuehui; Bradley, Michael A.; and Krause, Karl Robert.

The application for the patent was published on July 4, under issue no. 27/2025.

According to the abstract released by the Intellectual Property India: "Disclosed herein are processes for separating hydrogen fluoride (HF) from a composition including 1,1,1,3-tetrafluoropropane (HFC-254fb), 3,3,3-trifluoropropene (HFO-1243zf), and a molar excess of HF, including azeotropic distillation. Also disclosed herein are processes for separating HFC-254fb from an HFC-254fb-rich stream including HFC-254fb, HFO-1243zf, and HF, including azeotropic distillation. Also disclosed herein are processes for separating HFC-254fb from a process stream including HFC-254fb, HFO-1243zf, and a molar excess of HF including azeotropic distillation. Also disclosed herein are azeotrope or near-azeotrope compositions including HFC-254fb/HF, HFO-1243zf/HF, mixtures of HFC-254fb/HF, HFO-1243zf/HF, and HF."

The patent application was internationally filed on Nov. 14, 2023, under International application No.PCT/US2023/037237.

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