Method for applying a lubricious coating to an article
AssigneeBecton, Dickinson and Company
InventorsHoushang Karimi, Mutlu Karakelle, Robert A. Taller
Life of this patent
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Abstract
A composition which includes polyvinylpyrrolidone and a polyurethane is melt processed to give a shaped article. The melt processing may be a coextrusion with a substrate polymer to give a shaped article having the composition coated on the surface thereof. The article surface is lubricious when contacted with water.
Claims16
A method for preparing a shaped medical article comprising coextruding a melt of a substrate polymer and a melt of a coating composition comprising polyvinylpyrrolidone and a base polyurethane to give a shaped article of said substrate polymer having thereon a layer of said coating composition, said layer when wet absorbinq water and becoming lubricious.
A method for preparing a shaped medical article comprising melt fabricating a composition including polyvinylpyrrolidone and a thermoplastic base polymer to give a shaped article which absorbs water and becomes lubricious when wet.
A method for preparing a shaped medical article comprising:
- a) preparing a homogeneous solution comprising a polyetherpolyurethane and polyvinylpyrrolidone in a solvent;
- b) removing said solvent to leave a homogeneous blend of a coating composition comprising said polyetherpolyurethane and polyvinylpyrrolidone;
- and
- c) coextruding said composition and a thermoplastic substrate polyurethane to give a shaped article of said substrate polyurethane having thereon a layer of said composition, said layer when wet absorbing water and becoming lubricious.
Dependencies are inferred from the claim text.