Solvent compositions comprising unsaturated fluorinated hydrocarbons
AssigneeE.I. du Pont de Nemours and Company
InventorsMario Joseph Nappa, Melodie A. Schweitzer, Allen Capron Sievert, Ekaterina N. Swearingen
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Abstract
This invention relates to cleaning compositions comprising unsaturated fluorinated hydrocarbons. The invention further relates to use of said cleaning compositions in methods to clean, degrease, deflux, dewater, and deposit fluorolubricant. The invention further relates to novel unsaturated fluorinated hydrocarbons and their use as cleaning compositions and in the methods listed above.
Claims24
A solvent composition consisting essentially of unsaturated fluorinated hydrocarbon having the formula R1CH═CHR2, wherein R1 is CF3 and R2 is CF2CF2CF2CF3.
A method for removing residue from a surface comprising:
- a. contacting the surface with a composition comprising an unsaturated fluorinated hydrocarbon having the formula E- or Z-R1CH═CHR2, wherein R1 is CF3 and R2 is CF2CF2CF2CF3, and
- b. recovering the surface from the composition.
A method for depositing a fluorolubricant on a surface comprising:
- (a) combining a fluorolubricant and a solvent, said solvent comprising an unsaturated fluorinated hydrocarbon having the formula E- or Z-R1CH═CHR2, wherein R1 is CF3 and R2 is CF2CF2CF2CF3, to form a lubricant-solvent combination;
- (b) contacting the combination of lubricant-solvent with the surface;
- and
- (c) evaporating the solvent from the surface to form a fluorolubricant coating on the surface.
Dependencies are inferred from the claim text.