Articles prepared from water-based hydrophilic coating compositions
AssigneeSurface Solutions Laboratories, Inc.
InventorMargaret P. Opolski
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Abstract
A water-based coating composition suitable for preparing hydrophilic surfaces on various articles is provided which includes a supporting polymer having functional moieties capable of undergoing crosslinking reactions, said supporting polymer soluble in or emulsified in an aqueous based medium; and a hydrophilic polymer, said hydrophilic polymer associated with the supporting polymer. The composition is characterized in that, when crosslinked at the functional moieties, the supporting polymer forms a three-dimensional network which substantially minimizes disassociation of the hydrophilic polymer.
Claims14
A coated article, comprising:
- an article having a hydrophilic coating thereon, said coating comprising:
- a polyurethane polymer matrix, said polyurethane polymer having an equivalent weight of functional moiety pendant to the polyurethane backbone in the range of about 1000 to 2805 g/eq. and forming a three-dimensional network, said network consisting essentially of said polyurethane backbone and crosslinking bridges at said pendant functional moiety;
- and
- a hydrophilic polymer, said hydrophilic polymer associated with said polyurethane polymer matrix,
- the polyurethane polymer matrix having a crosslink density such that the coating retains slip for up to 24 hours in ambient aqueous medium.
A coated medical device, comprising:
- a medical device having a surface coated with a hydrophilic coating, said hydrophilic coating comprising:
- a three-dimensional polyurethane polymer matrix, said polyurethane polymer having an equivalent weight of functional moiety pendant to the polyurethane backbone of about 1000 to 2805 g/eq. and forming a three-dimensional network, said network consisting essentially of said polyurethane backbone and crosslinking bridges at said pendent functional moiety;
- and
- a poly(vinylpyrrolidone) hydrophilic polymer, said poly(vinylpyrrolidone) polymer associated with said polyurethane polymer,
- the polyurethane polymer matrix having a crosslink density such that the coating retains slip for up to 24 hours in ambient aqueous medium.
Dependencies are inferred from the claim text.