Patent ID: 8647718
Filing Date: 2014-02-11
Classification: A61L,B05D,C08G,C09D,C10M,C10N

Abstract:
1. A surface coating having wet-lubricity, comprising: an inner layer on the surface that is: (A) a urethane polymer layer which includes (a) 40 to 80% by weight of at least one component selected from an aromatic diisocyanate, an aliphatic diisocyanate and an alicyclic diisocyanate and (b) 20 to 60% by weight of a polyol having at least trifunctionality for forming the urethane polymer layer, said polyol being selected from the group consisting of branched polyol derivatives of polyester polyols, polyether polyols (poly(oxypropylene ether) polyol and poly(oxyethylene-propylene ether) polyol), and acrylic polyol; castor oil and its derivatives; glycerol, trimethylol propane, trimethylol ethane, 1,2,6-hexane triol, pentaerythritol, sorbitol, and mannito, and an outer layer formed on said inner layer that is: (B) a hydrophilic polymer layer which is provided as an outer layer for the urethane polymer layer and which includes a polyalkylene glycol and/or a monomethoxypolyalkylene glycol, such that said surface coating has both wet lubricity and durability.