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US 2007/0184275 A1Published application
Methods of applying a hydrophilic coating to a substrate, and substrates having a hydrophilic coating
AssigneeHollister Incorporated
InventorThomas Gilman
Life of this patent
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Abstract
This invention relates to methods of applying to a substrate a hydrophilic coating that becomes lubricious when activated with water or water vapor, and to substrates having such a hydrophilic coating.
Claims23
A method of applying a hydrophilic coating to a substrate surface, comprising:
- providing a substrate having a surface that is comprised at least in part of a water-swellable material;
- and,
- contacting the substrate surface with a solution comprising at least one of (i) a water-soluble polymer capable of being cross-linked to form a cross-linked, lubricious, hydrophilic coating and (ii) a water-soluble monomer capable of being polymerized to form a cross-linked, lubricious, hydrophilic coating.
A substrate having a hydrophilic coating, comprising:
- a substrate having a surface that is comprised at least in part of a water-swellable material having swollen and non-swollen states;
- and,
- an interpenetrating polymer network disposed on the surface, the interpenetrating polymer network formed by at least one of (i) a water-soluble polymer capable of being cross-linked to form a cross-linked, lubricious, hydrophilic coating and (ii) a water-soluble monomer capable of being polymerized to form a cross-linked, lubricious, hydrophilic coating, in the presence of the swollen state of the water-swellable material, so as to secure the hydrophilic coating to the surface.
Dependencies are inferred from the claim text.