Elastomeric segmented hydrophilic polyetherurethane based lubricious coatings
AssigneeBecton, Dickinson and Company
InventorsMutlu Karakelle, Houshang Karimi, Min-Shui Lee, Robert A. Taller
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Abstract
A coating composition for an article surface includes a uniform blend of an elastomeric segmented hydrophilic polyetherurethane and a hydrophilic polymer, such as polyvinylpyrrolidone. The invention includes a method for rendering an article surface lubricious which includes coating the composition onto the article surface and contacting the coated surface with an aqueous liquid.
Claims16
A lubricious and biocompatible coating composition for a substrate comprising a substantially uniform blend of a hydrophilic polymer and an elastomeric segmented hydrophilic polyetherurethane which is the reaction product of a diisocyanate, a hydrophilic polyether glycol and a diol chain extender.
A lubricious and hemocompatible coating composition comprising a substantially uniform blend of polyvinylpyrrolidone and an elastomeric segmented hydrophilic polyetherurethane which is the reaction product of 4,4'-diphenylmethane diisocyanate, polyethylene oxide glycol and 1,4-butanediol having a hard segment content of about 25 to 60% by weight.
A method for lubricating a polymeric surface comprising coating onto a polymeric surface a composition comprising a substantially uniform blend of a hydrophilic polymer and an elastomeric segmented hydrophilic polyetherurethane which is the reaction product of a diisocyanate, a hydrophilic polyether glycol and a diol chain extender to give a coated surface and contacting said coated surface with a liquid.
A method for lubricating a polymeric surface comprising:
- (a) preparing a composition comprising a substantially uniform blend of polyvinylpyrrolidone and an elastomeric segmented hydrophilic polyetherurethane which is the reaction product of 4,4'-diphenylmethane diisocyanate, polyethylene oxide glycol and 1,4-butanediol having a hard segment content of about 25 to 60%;
- (b) coating said composition onto a polymeric substrate;
- and
- (c) contacting the coated surface with an aqueous liquid.
Dependencies are inferred from the claim text.