Azeotropic and azeotrope-like compositions of methyl perfluoroheptene ethers and trans-1,2-dichloroethylene and uses thereof
View Patent ↗The present disclosure provides azeotropic and azeotrope-like compositions comprised of methylperfluoroheptene ethers and trans-1,2-dichloroethylene. The present disclosure also provides for methods of use for the azeotropic and azeotrope-like compositions.
1. An azeotropic or azeotrope-like composition comprising methylperfluoroheptene ethers and an effective amount of trans-1,2-dichloroethylene.
2. The azeotrope-like composition of claim 1 , comprising from about 0.1 mole percent to about 9.7 mole percent methylperfluoroheptene ethers, and trans-1,2-dichloroethylene.
3. The azeotrope-like composition of claim 1 , comprising from about 0.1 mole percent to about 9.7 mole percent methylperfluoroheptene ethers, and trans-1,2-dichloroethylene, having a vapor pressure of from about 2.11 psia to about 207.8 psia, at a temperature of from about 0° C. to about 160° C.
4. The azeotrope-like composition of claim 1 wherein said composition consists essentially of from about 0.1 mole percent to about 9.7 mole percent methylperfluoroheptene ethers, and trans-1,2-dichloroethylene, having a vapor pressure of from about 2.11 psia to about 207.8 psia, at a temperature of from about 0° C. to about 160° C.
5. The azeotrope-like composition of claim 1 , comprising from about 0.1 mole percent to about 4.7 mole percent methylperfluoroheptene ethers, and trans-1,2-dichloroethylene, having a vapor pressure of from about 1 atm., at a temperature of from about 47.6° C. to about 47.9° C.
6. The azeotropic composition of claim 1 , comprising about 1.0 mole percent methylperfluoroheptene ethers and trans-1,2-dichloroethylene, having a vapor pressure of about 1 atm, at a temperature of 46° C.
7. The azeotropic composition of claim 1 , consisting essentially of about 1.0 mole percent methylperfluoroheptene ethers and trans-1,2-dichloroethylene, having a vapor pressure of about 1 atm, at a temperature of 46° C.
8. The azeotrope-like composition of claim 1 , comprising from about 0.6 mole percent to about 8.7 mole percent methylperfluoroheptene ethers and trans-1,2-dichloroethylene, having a vapor pressure of about 1 atm., at a temperature of from about 48.3° C. to about 48.5° C.
9. The compositions of claim 1 , consisting essentially of from about 0.6 mole percent to about 8.7 mole percent methylperfluoroheptene ethers and trans-1,2-dichloroethylene, having a vapor pressure of about 1 atm., at a temperature of from about 48.3° C. to about 48.5° C.
10. The composition of claim 1 , having a dew point pressure and a bubble point pressure difference that is less than or equal to 3%, based upon the bubble point pressure.
11. A method for removing residue from a surface of an article comprising:
a. contacting said surface with a composition comprising an azeotropic or azeotrope-like composition of methylperfluoroheptene ethers and trans-1,2-dichloroethylene; and
b. recovering said surface from the composition.
12. The method of claim 11 , wherein said composition further comprises a propellant.
13. The method of claim 12 , wherein said propellant is comprised of air, nitrogen, carbon dioxide, 2,3,3,3-tetrafluoropropene, trans-1,3,3,3-tetrafluoropropene, 1,2,3,3,3-pentafluoropropene, difluoromethane, trifluoromethane, difluoroethane, trifluoroethane, tetrafluoroethane, pentafluoroethane, hydrocarbons, or dimethyl ether, or combinations thereof.
14. The method of claim 11 , wherein said composition further comprises at least one surfactant.
15. The method of claim 11 , wherein said contacting is accomplished by vapor degreasing.
16. The method of claim 11 , wherein said vapor degreasing is performed by:
a. boiling the composition; and
b. exposing the article to vapors of said composition.
17. The method of claim 11 , wherein said contacting is accomplished by a first step of immersing the article in said composition, wherein the composition is at a temperature greater than ambient temperature or room temperature.
18. The method of claim 17 , wherein the composition is at a temperature of about the boiling point of the composition.
19. The method of claim 17 , further comprising a second step of immersing the article in said composition, wherein said composition is at a temperature lower than the temperature of the first immersing step.
20. The method of claim 19 , wherein the composition in the second immersing step is at ambient temperature or room temperature.
21. The method of claim 19 , further comprising the steps of boiling the composition and exposing the article to vapors of the boiling composition.
22. The method of claim 11 , wherein the composition is at ambient temperature or room temperature.
23. The method of claim 11 , wherein said contacting is accomplished by wiping the surface with an object saturated with the composition.