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US 8,999,909 B2Granted
Azeotropic compositions of 1,1,1,3,3-pentachloropropane and hydrogen fluoride
AssigneeHoneywell International Inc.
InventorsDaniel C. Merkel, Hsueh Sung Tung, Konstantin A. Pokrovski, Hang T. Pham, Ryan Hulse
Life of this patent
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Abstract
Provided are azeotropic or azeotrope-like mixtures of 1,1,1,3,3-pentachloro-propane (240fa) and hydrogen fluoride. Such compositions are useful as an intermediate in the production of HFC-245fa and HCFO-1233zd.
Claims1
An azeotropic or azeotrope-like liquid composition which consists of from about 90 to about 97 weight percent hydrogen fluoride and from about 10 to about 3 weight percent 1,1,1,3,3-pentachloropropane (240fa), which composition has a boiling point of about 24° C. to about 60° C. at pressure of about 17.8 psia to pressure of about 55.4 psia.
Dependencies are inferred from the claim text.