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US 6,608,019 B1Granted
Alkoxy-substituted perfluorocompounds
Assignee3M Innovative Properties Company
InventorsRichard M. Flynn, George G. I. Moore
Life of this patent
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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.
Claims3
Alkoxy-substituted perfluorocompounds represented by the general formula
- Rf3(CF2ORh)x′,
- wherein Rf3 is a substituted or unsubstituted perfluorocycloalkyl, perfluorocycloalkanediyl, or perfluorocycloalkanetriyl group having from 3 to about 12 carbon atoms;
- each Rh is 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;
- and x′ is an integer of 1 to 3;
- wherein either or both of the groups Rf3 and Rh can contain one or more catenated heteroatoms.
2 more elements
Dependencies are inferred from the claim text.