US2010203167A1PendingUtilityA1

Azeotrope compositions comprising decafluoropentane and hydrogen fluoride and uses thereof

Assignee: DU PONTPriority: Nov 1, 2005Filed: Apr 26, 2010Published: Aug 12, 2010
Est. expiryNov 1, 2025(expired)· nominal 20-yr term from priority
C07C 17/383C11D 7/505C07C 21/18C07C 17/25C07C 17/38C07C 17/386
51
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Claims

Abstract

Disclosed herein are azeotrope compositions comprising 1,2,3,3,3-pentafluoropropene and hydrogen fluoride. The azeotrope compositions are useful in processes to produce and in processes to purify 1,2,3,3,3-pentafluoropropene. Additionally, disclosed herein are azeotrope and near-azeotrope compositions comprising 1,1,1,2,3,4,4,5,5,5-decafluoropentane and hydrogen fluoride.

Claims

exact text as granted — not AI-modified
1 - 41 . (canceled) 
   
   
       42 . An azeotrope or near-azeotrope composition comprising HFC-43-10mee and hydrogen fluoride. 
   
   
       43 . The azeotrope or near-azeotrope composition of  claim 42  comprising HFC-43-10mee and an effective amount of hydrogen fluoride. 
   
   
       44 . The azeotrope or near-azeotrope composition of  claim 42  comprising from about 2.6 mole percent to about 20.1 mole percent HFC-43-10mee and hydrogen fluoride. 
   
   
       45 . The azeotrope or near-azeotrope composition of  claim 42  comprising from about 2.6 mole percent to about 20.1 mole percent HFC-43-10mee and from about 97.4 mole percent to about 79.9 mole percent hydrogen fluoride. 
   
   
       46 . The azeotrope or near-azeotrope composition of  claim 42  comprising from about 2.6 mole percent to about 20.1 mole percent HFC-43-10mee and from about 97.4 mole percent to about 79.9 mole percent hydrogen fluoride, wherein the vapor pressure is from about 3.0 psi (20.7 kPa) to about 198 psi (1365 kPa) at a temperature of from about −20° C. to about 100° C. 
   
   
       47 . The azeotrope or near-azeotrope composition of  claim 42  wherein said compositions consist essentially of from about 2.6 mole percent to about 20.1 mole percent HFC-43-10mee and from about 97.4 mole percent to about 79.9 mole percent hydrogen fluoride, wherein the vapor pressure is from about 3.0 psi (20.7 kPa) to about 198 psi (1365 kPa) at a temperature of from about −20° C. to about 100° C. 
   
   
       48 . The azeotrope composition of  claim 42  comprising from about 2.7 mole percent to about 18.2 mole percent HFC-43-10mee and from about 97.3 mole percent to about 81.8 mole percent hydrogen fluoride, wherein the vapor pressure is from about 3.0 psi (20.7 kPa) to about 198 psi (1365 kPa) at a temperature of from about −20° C. to about 100° C. 
   
   
       49 . The azeotrope composition of  claim 42  wherein said compositions consist essentially of from about 2.7 mole percent to about 18.2 mole percent HFC-43-10mee and from about 97.3 mole percent to about 81.8 mole percent hydrogen fluoride, wherein the vapor pressure is from about 3.0 psi (20.7 kPa) to about 198 psi (1365 kPa) at a temperature of from about −20° C. to about 100° C. 
   
   
       50 . The azeotrope or near-azeotrope composition of  claim 42 , wherein said composition is characterized by a difference between dew point pressure and bubble point pressure that is less than or equal to 3 percent (based upon bubble point pressure).

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