Azeotrope compositions comprising...

Details Azeotrope compositions comprising... Azeotrope compositions comprising...

2011-08-30

2011-08-30

Douyon, Lorna M (Department: 1761)

Compositions

Fire-extinguishing

C252S067000, C252S364000, C252S570000, C203S029000, C203S038000, C570S155000, C570S178000, C510S408000, C510S415000

Reexamination Certificate

active

08007677

ABSTRACT:
Disclosed herein are azeotrope and near-azeotrope compositions comprising E-1,1,1,2,3-pentafluoropropene (E-HFC-1225ye) and hydrogen fluoride. The azeotrope and near-azeotrope compositions are useful in processes to produce and in processes to purify E-HFC-1225ye and/or Z-1,1,1,2,3-pentafluoropropene (Z-HFC-1225ye). Also disclosed are processes for the extractive distillation to separate E-HFC-1225ye from Z-HFC-1225ye.

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