Azeotropic compositions comprising fluorinated compounds for cleaning applications
View Patent ↗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.
1. An azeotropic or azeotrope-like composition comprising an azeotropic or azeotrope-like composition of:
about 42 to about 84 weight percent F13E and about 58 to about 16 weight percent trans-1,2-dichloroethylene.
2. An azeotropic or azeotrope-like composition comprising an azeotropic or azeotrope-like composition of:
66.3 weight percent F13E and 33.7 weight percent trans-1,2-dicholoroethylene having a vapor pressure of about 14.7 psia (101 kPa) at a temperature of about 36.3° C.
3. A composition comprising the azeotrope-like composition of claim 1 and an aerosol propellant.
4. The composition of claim 3 , wherein the aerosol propellant is selected from the group consisting of air, nitrogen, carbon dioxide, difluoromethane, trifluoromethane, difluoroethane, trifluoroethane, tetrafluoroethane, pentafluoroethane, heptafluoropropane, and pentafluoropropane.
5. A composition comprising the azeotropic composition of claim 2 and an aerosol propellant.
6. The composition of claim 5 , wherein the aerosol propellant is selected from the group consisting of air, nitrogen, carbon dioxide, difluoromethane, trifluoromethane, difluoroethane, trifluoroethane, tetrafluoroethane, pentafluoroethane, heptafluoropropane, and pentafluoropropane.
7. A process for cleaning, comprising:
a. contacting a surface comprising a residue with the composition of claim 1 and
b. recovering the surface from the composition.
8. The process of claim 7 wherein said residue comprises an oil.
9. The process of claim 7 wherein said residue comprises a rosin flux.
10. The process of claim 7 wherein said surface is an integrated circuit device.
11. A process for cleaning, comprising:
a. contacting a surface comprising a residue with the composition of claim 2 and
b. recovering the surface from the composition.
12. The process of claim 11 wherein said residue comprises an oil.
13. The process of claim 11 wherein said residue comprises a rosin flux.
14. The process of claim 11 wherein said surface is an integrated circuit device.