Polyfluoroether-based phosphates
AssigneeE.I. du Pont de Nemours and Company
InventorsSheng Peng, Stephen James Getty, Xianjun Meng
Life of this patent
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Abstract
A composition comprising one or more compounds of formula (I) or (II): wherein: Rf is a linear or branched perfluoroalkyl having 1 to 7 carbon atoms, optionally interrupted by one to three oxygen atoms, r and q are each independently an integer of 1 to 3, j is 0 or 1, or a mixture thereof, x is from about 1 to about 2, Z is —O—, —S—, or —NR—, R is hydrogen or an alkyl group containing 1 to 4 carbon atoms X is hydrogen or M, and M is an ammonium ion, an alkali metal ion, or an alkanolammonium ion, and its use in providing surface properties to substrates is disclosed.
Claims9
A method of providing water repellency, oil repellency and stain resistance to a substrate comprising contacting the substrate with a composition comprising one or more compounds of formula (I) or (II):
- wherein:
- Rf is a linear perfluoroalkyl having 1 to 7 carbon atoms, optionally interrupted by one to three oxygen atoms,
- r and q are each independently an integer of 1 to 3,
- j is 0 or 1, or a mixture thereof,
- x is from about 1 to about 2,
- Z is —O—, —S—, or —NR—,
- R is hydrogen or an alkyl group containing 1 to 4 carbon atoms
- X is hydrogen or M, and
- M is an ammonium ion, an alkali metal ion, or an alkanolammonium ion.
A method of providing resistance to blocking, open time extension, and oil repellency to a substrate having deposited thereon a coating composition comprising adding to the coating composition prior to deposition on the substrate a composition comprising one or more compounds of formula (I) or (II):
- wherein:
- Rf is a linear perfluoroalkyl having 1 to 7 carbon atoms, optionally interrupted by one to three oxygen atoms,
- r and q are each independently an integer of 1 to 3,
- j is 0 or 1, or a mixture thereof,
- x is from about 1 to about 2,
- Z is —O—, —S—, or —NR—,
- R is hydrogen or an alkyl group containing 1 to 4 carbon atoms
- X is hydrogen or M, and
- M is an ammonium ion, an alkali metal ion, or an alkanolammonium ion.
Dependencies are inferred from the claim text.