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. 14, 2026
Filed:
Nov. 05, 2020
Azeotrope or azeotrope-like compositions of 3,3,3-trifluoropropyne (tfpy) and hydrogen fluoride (hf)
Honeywell International Inc., Charlotte, NC (US);
Haiyou Wang, Amherst, NY (US);
Hang T. Pham, Amherst, NY (US);
Hsueh Sung Tung, Getzville, NY (US);
Rajiv Ratna Singh, Getzville, NY (US);
Solstice Advanced Materials US, Inc., Morris Plains, NJ (US);
Abstract
Heterogenous azeotrope or azeotrope-like compositions comprising 3,3,3-trifluoropropyne (TFPY) and hydrogen fluoride (HF) which may include from about 71.5 wt. % to about 98.8 wt. % 3,3,3-trifluoropropyne (TFPY) and from about 1.2 wt. % to about 28.5 wt. % hydrogen fluoride and have a boiling point between about −10.0° C. and about 25.0° C. at a pressure of between about 61 psia and about 171 psia. The azeotrope or azeotrope-like compositions may be used to separate 3,3,3-trifluoropropyne (TFPY) as an impurity from compositions of 2-chloro-3,3,3-trifluoropropene (1233xf), 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb), or 2,3,3,3-tetrafluoropropene (HFO-1234yf).