A process for removing contaminants from the surface of a substrate comprises contacting the substrate with a cleaning composition comprising at least one mono-, di-, or trialkoxy-substituted perfluoroalkane, perfluorocycloalkane, perfluorocycloalkyl-containing perfluoroalkane, or perfluorocycloalky
A process for removing contaminants from the surface of a substrate comprises contacting the substrate with a cleaning composition comprising at least one mono-, di-, or trialkoxy-substituted perfluoroalkane, perfluorocycloalkane, perfluorocycloalkyl-containing perfluoroalkane, or perfluorocycloalkylene-containing perfluoroalkane compound, the compound optionally containing additional catenary heteroatoms. The compounds exhibit good solvency properties while being environmentally acceptable.
대표청구항▼
1. A coating composition comprising: (a) a solvent composition comprising at least one mono-, di-, or trialkoxy-substituted perfluoroalkane, perfluorocycloalkane, perfluorocycloalkyl-containing perfluoroalkane, or perfluorocycloalkylene-containing perfluoroalkane compound, said compound optionall
1. A coating composition comprising: (a) a solvent composition comprising at least one mono-, di-, or trialkoxy-substituted perfluoroalkane, perfluorocycloalkane, perfluorocycloalkyl-containing perfluoroalkane, or perfluorocycloalkylene-containing perfluoroalkane compound, said compound optionally containing one or more additional catenated heteroatoms; and (b) at least one coating material that is soluble or dispersible in said solvent composition. 2. The coating composition according to claim 1, wherein said solvent composition further comprises at least one co-solvent and/or at least one additive. 3. The coating composition according to claim 2, wherein said co-solvent is selected from the group consisting of alcohols, ethers, alkanes, alkenes, perfluorocarbons, perfluorinated tertiary amines, perfluoroethers, cycloalkanes, esters, ketones, aromatics, siloxanes, hydrochlorocarbons, hydrochlorofluorocarbons, and hydrofluorocarbons, and said additive is a surfactant. 4. The coating composition according to claim 1, wherein said compound has a boiling point in the range of from about 25° C. to about 200° C. 5. The coating composition according to claim 1, wherein said compound is represented by the general formula Rf--(O--Rh)x, wherein x is an integer of 1 to 3; when x is 1, Rfis selected from the group consisting of linear or branched perfluoroalkyl groups having from 2 to about 15 carbon atoms, perfluorocycloalkyl-containing perfluoroalkyl groups having from 5 to about 15 carbon atoms, and perfluorocycloalkyl groups having from 3 to about 12 carbon atoms; when x is 2, Rfis selected from the group consisting of linear or branched perfluoroalkanediyl groups or perfluoroalkylidene groups having from 2 to about 15 carbon atoms, perfluorocycloalkyl- or perfluorocycloalkylene-containing perfluoroalkanediyl or perfluoroalkylidene groups having from 6 to about 15 carbon atoms, and perfluorocycloalkanediyl groups or perfluorocycloalkylidene groups having from 3 to about 12 carbon atoms; when x is 3, Rfis selected from the group consisting of linear or branched perfluoroalkanetriyl groups having from 2 to about 15 carbon atoms, perfluorocycloalkyl- or perfluorocycloalkylene-containing perfluoroalkanetriyl groups having from 6 to about 15 carbon atoms, and perfluorocycloalkanetriyl groups having from 3 to about 12 carbon atoms; each Rhis independently selected from the group consisting of linear or branched alkyl groups having from 1 to about 8 carbon atoms, cycloalkyl-containing alkyl groups having from 4 to about 8 carbon atoms, and cycloalkyl groups having from 3 to about 8 carbon atoms; wherein either or both of the groups Rfand Rhcan contain one or more catenated heteroatoms; and wherein the sum of the number of carbon atoms in Rfand the number of carbon atoms in Rhis greater than or equal to 4. 6. The composition according to claim 1, wherein said coating material is selected from the group consisting of pigments, lubricants, stabilizers, adhesives, anti-oxidants, dyes, polymers, pharmaceuticals, release agents, inorganic oxides, and combinations thereof. 7. The composition according to claim 1, wherein said coating material is selected from the group consisting of perfluoropolyether, hydrocarbon, and silicone lubricants; copolymers of tetrafluoroethylene; polytetrafluoroethylene; and combinations thereof. 8. A coating composition comprising: (a) a solvent composition comprising at least one compound selected from the group consisting of c-C6F11CF2OC2H5,c-C6F11CF2OCH3,4-CF3-c-C6F10CF2OCH3, (b) at least one coating material that is soluble or dispersible in said solvent composition.
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이 특허에 인용된 특허 (34)
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