Azeotrope or azeotrope-like compositions of 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) and water
AssigneeSolstice Advanced Materials US, Inc.
InventorsHaluk Kopkalli, Daniel C. Merkel, Hang T. Pham
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Abstract
Heterogenous azeotrope or azeotrope-like compositions comprising 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) and water which may include from about 0.05 wt. % to about 92.01 wt. % 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) and from about 7.99 wt. % to about 99.95 wt. % water and having a boiling point between about −13.5° C. and about 14.5° C. at a pressure of between about 12.5 psia and about 16.5 psia. The azeotrope or azeotrope-like compositions may be used to separate impurities from 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb).
Claims19
A composition comprising a heterogeneous azeotrope or azeotrope-like composition consisting essentially of from about 0.05 wt. % to about 92.01 wt. % 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) and from about 7.99 wt. % to about 99.95 wt. % water.
A method of separating 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) from a primary composition comprising 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb), water, and at least one other substance, comprising the steps of:
- subjecting the primary composition to conditions effective to form a heterogeneous azeotrope or azeotrope-like composition consisting essentially of from about 0.05 wt. % to about 92.01 wt. % 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) and from about 7.99 wt. % to about 99.95 wt. % water;
- and
- separating the heterogeneous azeotrope or azeotrope-like composition from the primary composition.
Dependencies are inferred from the claim text.