Cleaning process and composition
Assignee3M Innovative Properties Company
InventorsRichard M. Flynn, George G.I. Moore, John G. Owens
Life of this patent
Estimating the term…
Abstract
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.
Claims25
A process for removing contaminants from the surface of a substrate comprising the step of contacting a substrate with a liquid- and/or vapor-phase cleaning composition comprising (a) 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 catenary heteroatoms;
- and (b) at least one co-solvent.
A process for removing contaminants from the surface of a substrate comprising the step of contacting a substrate with a liquid- and/or vapor-phase cleaning composition comprising (a) at least one compound selected from the group consisting of c-C6F11CF2OC2H5, c-C6F11CF2OCH3, 4-CF3-c-C6F10CF2OCH3,
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- CH3OCF2-c-C6F10CF2OCH3, C4F9OC2H5, C4F9OCH3, C6F11OCH3, (CF3)2CFCF2OCH3, (CF3)2CFCF2OC2H5, C8F17OCH3, C2F5CF (OCH3) CF (CF3)2, CF3CF (OCH3) CF (CF3)2, C5F11OCH3, C5F11OC2H5, C3F7CF (OC2H5) CF (CF3)2, and C3F7OCH3;
- and (b) at least one co-solvent.
A process for removing water from the surface of a substrate comprising the step of contacting a substrate with a liquid- and/or vapor-phase cleaning composition comprising (a) 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 catenary heteroatoms;
- and (b) at least one surface active agent.
A cleaning composition comprising (a) a major amount of 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 catenary heteroatoms;
- and (b) a minor amount of at least one co-solvent;
- wherein said major amount is greater than 50 percent by weight of said composition and said minor amount is less than 50 percent by weight of said composition, based on the total weights of components (a) and (b).
A cleaning composition comprising (a) a major amount of at least one compound selected from the group consisting of
- c-C6F11CF2OC2H5, c-C6F11CF2OCH3, 4-CF3-c-C6F10CF2OCH3,
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- CH3OCF2-c-C6F10CF2OCH3, C4F9OC2H5, C4F9OCH3, c-C6F11OCH3, (CF3)2CFCF2OCH3, (CF3)2CFCF2OC2H5, C8F17OCH3, C2F5CF (OCH3) CF (CF3)2, CF3CF (OCH3) CF (CF3)2, C5F11OCH3, C5F11OC2H5, C3F7CF (OC2H5) CF (CF3)2, and C3F7OCH3;
- and (b) a minor amount of at least one co-solvent;
- wherein said major amount is greater than 50 percent by weight of said composition and said minor amount is less than 50 percent by weight of said composition, based on the total weights of components (a) and (b).
A cleaning composition comprising (a) 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 catenary heteroatoms;
- and (b) at least one surface active agent.
Dependencies are inferred from the claim text.