Azeotropic compositions comprising fluorinated compounds for cleaning applications
AssigneeE.I. du Pont de Nemours and Company
InventorsBarbara Haviland Minor, Melodie A. Schweitzer
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Abstract
The present invention relates to compositions comprising fluorinated olefins or fluorinated ketones, and at least one alcohol, halocarbon, hydrofluorocarbon, or fluoroether and combinations thereof. In one embodiment, these compositions are azeotropic or azeotrope-like. In another embodiment, these compositions are useful in cleaning applications as a degreasing agent or defluxing agent for removing oils and/or other residues from a surface.
Claims14
An azeotropic or azeotrope-like composition consisting essentially of an azeotropic or azeotrope-like composition of:
- about 57 to about 92 weight percent F24E and about 43 to about 8 weight percent ethanol.
An azeotropic or azeotrope-like composition comprising an azeotropic or azeotrope-like composition comprising
- 79.2 weight percent F24E and 20.8 weight percent ethanol having a vapor pressure of about 14.7 psia (101 kPa) at a temperature of about 71.8° C.
Dependencies are inferred from the claim text.