Ice-Shedding and Smudge-Repellant Coating
AssigneeQueen's University at Kingston
InventorsGuojun Liu, Alexander Newell Harper
Life of this patent
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Abstract
A coating that is able to shed accumulated material (such as ice) that includes a crosslinkable copolymer with hydrogen bonding moieties and liquid-like side chains, and an oil (or other non-aqueous liquid) that is compatible with the side-chains and that resides in the crosslinked coating and on the surface of the coating together with the side-chains that are on the external surface. Methods may use the coating for de-icing, shedding of marine organisms, and smudge-repellency.
Claims28
A coating that sheds accumulated material, comprising:
- a coating precursor that comprises a crosslinkable copolymer comprising hydrogen bonding moieties and liquid-like side chains that are compatible with a selected non-aqueous liquid;
- and 0.2-30 vol % of the selected non-aqueous liquid,
- wherein when the coating is crosslinked, at least a portion of the liquid-like side-chains and the non-aqueous liquid are present at the surface of the coating.
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A method for shedding accumulated material, comprising:
- applying a coating precursor to a substrate to form a crosslinked coating, wherein the coating precursor comprises a crosslinkable copolymer comprising hydrogen bonding moieties and liquid-like side chains that are compatible (miscible) with a selected non-aqueous liquid;
- adding 0.2-30 vol % of the selected non-aqueous liquid either to the coating precursor or to the crosslinked coating;
- wherein accumulated material on the coating readily sheds.
-39. (canceled)
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The coating of claim 39, comprising a mixture of HDIT and UPy-NCO referred to as PU-H0, PU-H50, PU-H75, and PU-H100 wherein 0, 50, 75, and 100 are an amount on the percentile scale of isocyanate groups contributed by UPy-NCO.
-50. (canceled)
P(EHMA-s-HEMA)-g-PDMS.
-57. (canceled)
Dependencies are inferred from the claim text.