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US 8,557,135 B2Granted
Azeotrope and azeotrope-like composition of 2,3,3,3-tetrafluoropropene and ammonia
AssigneeArkema France
InventorsWissam Rached, Jean-Christophe Boutier
Life of this patent
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Abstract
The present invention relates to azeotrope and azeotrope-like compositions comprised of 2,3,3,3-tetrafluoropropene (HFO-1234yf) and ammonia, and uses thereof.
Claims8
An azeotrope-like composition consisting of:
- from 20 to 60 wt % ammonia;
- from 40 to 80 wt % HFO1234yf;
- optionally, an additive selected from the group consisting of surface active agents, stabilizers, tracers, fluorescent agents, odorants, and solubilizing agents;
- and
- optionally, a lubricant,
- wherein the composition, at constant temperature of 5° C., exhibits a pressure of the saturated liquid and a pressure of the saturated vapor which differ by 10% or less.
3 more elements
An azeotrope-like composition consisting essentially of:
- from 20 to 60 wt % ammonia;
- and
- from 40 to 80 wt % HFO1234yf,
- wherein the composition, at constant temperature of 5° C., exhibits a pressure of the saturated liquid and a pressure of the saturated vapor which differ by 10% or less.
1 more element
Dependencies are inferred from the claim text.