Cleaning process and composition
AssigneeMinnesota Mining and Manufacturing Company
InventorsRichard M. Flynn, Mark W. Grenfell, George G. I. Moore, John G. Owens, Dean S. Milbrath
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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.
Claims14
A dry cleaning process for removing contaminants from the surface of a fabric substrate, the process comprising the step of contacting a fabric substrate with a liquid- and/or vapor-phase cleaning composition comprising 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.
A dry cleaning process for removing contaminants from the surface of a fabric substrate, the process comprising the step of contacting a fabric substrate with a liquid- and/or vapor-phase cleaning composition comprising a major amount of at least one compound selected from the group consisting of c-C.sub.6 F.sub.11 CF.sub.2 OC.sub.2 H.sub.5, c-C.sub.6 F.sub.11 CF.sub.2 OCH.sub.3, 4-CF.sub.3 -c-C.sub.6 F.sub.10 CF.sub.2 OCH.sub.3, ##STR13## CH.sub.3 OCF.sub.2 -c-C.sub.6 F.sub.10 CF.sub.2 OCH.sub.3, C.sub.4 F.sub.9 OC.sub.2 H.sub.5, C.sub.4 F.sub.9 OCH.sub.3, c-C.sub.6 F.sub.11 OCH.sub.3, (CF.sub.3).sub.2 CFCF.sub.2 OCH.sub.3, (CF.sub.3).sub.2 CFCF.sub.2 H.sub.5, C.sub.8 F.sub.17 OCH.sub.3, C.sub.2 F.sub.5 CF(OCH.sub.3)CF(CF.sub.3).sub.2, CF.sub.3 CF(OCH.sub.3)CF(CF.sub.3).sub.2, C.sub.5 F.sub.11 OCH.sub.3, C.sub.5 F.sub.11 OC.sub.2 H.sub.5, and C.sub.3 F.sub.7 OCH.sub.3.
A dry cleaning process for removing contaminants from the surface of a fabric substrate, the process comprising the step of contacting a fabric substrate with a liquid- and/or vapor-phase cleaning composition consisting essentially of one or a mixture of two or more 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 a surfactant.
Dependencies are inferred from the claim text.