Fluorinated phosphonic acids
Assignee3M Innovative Properties Company
InventorsLarry D. Boardman, Mark J. Pellerite
Life of this patent
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Abstract
Fluorinated phosphonic acid compounds, useful as treatments for substrate surfaces, have the formula: wherein: R1 is a straight chain alkylene group having from about 3 to about 21 carbon atoms, an oxa-substituted straight chain alkylene group having from about 2 to about 20 carbon atoms, or a thia-substituted straight chain alkylene group having from about 2 to about 20 carbon atoms; R2 is a perfluoroalkyl group having from about 4 to about 10 carbon atoms; R3 is hydrogen, an alkali metal cation, or an alkyl group having from about 1 to about 6 carbon atoms; and M is hydrogen or an alkali metal cation, with the proviso that if R1 is an unsubstituted straight chain alkylene group, then the sum of carbon atoms in R1 and R2 combined is at least 10.
Claims22
A fluorinated phosphonic acid compound having the formula:
- wherein:
- R1 is a straight chain alkylene group having from about 7 to about 21 carbon atoms;
- R2 is a perfluoro-n-butyl group;
- R3 is hydrogen, an alkali metal cation, or an alkyl group having from about 1 to about 6 carbon atoms;
- and
- M is hydrogen or an alkali metal cation.
A method of treating the surface of an article, the method comprising:
- providing a substrate having a surface;
- and
- applying a fluorinated phosphonic acid compound to the surface of the substrate, the
- compound having the formula:
- wherein:
- R1 is a straight chain alkylene group having from about 7 to about 21 carbon atoms;
- R2 is a perfluoro-n-butyl group;
- R3 is hydrogen, an alkali metal cation, or an alkyl group having from about 1 to about 6 carbon atoms;
- and
- M is hydrogen or an alkali metal cation.
An article comprising a substrate having a surface, the surface intimately contacting at least a partial monolayer of a fluorinated phosphonic acid compound having the formula:
- wherein:
- K1 is a straight chain alkylene group having from about 7 to about 21 carbon atoms;
- R2 is a perfluoro-n-butyl group;
- R3 is hydrogen, an alkali metal cation, or an alkyl group having from about 1 to about 6 carbon atoms;
- and
- M is hydrogen or an alkali metal cation.
An article prepared by a process, the process comprising:
- providing a substrate having a surface;
- and
- applying a fluorinated phosphonic acid compound to the surface of the substrate, the
- compound having the formula:
- wherein:
- R1 is a straight chain alkylene group having from about 7 to about 21 carbon atoms;
- R2 is a perfluoro-n-butyl group;
- R3 is hydrogen, an alkali metal cation, or an alkyl group having from about 1 to about 6 carbon atoms;
- and
- M is hydrogen or an alkali metal cation.
Dependencies are inferred from the claim text.