Patent ID: 6020071
Filing Date: 2000-02-01
Classification: A61L,C08G,Y10T

Abstract:
A hydrophilic lubricious coating composition comprising a non-toxic, cross-linked hydrophilic polyurethane which is insoluble in water, wherein said polyurethane is formed from the reaction on a surface to be coated, of a mixture comprising (a) a solution of an isocyanate terminated pre-polymer in a non-aqueous liquid, said pre-polymer being formed from a polyether or a polyester and an isocyanate, and a solution of a hydrophilic diol having a molecular weight of 5000-30,000 in a non-aqueous liquid, wherein the ratio, weight for weight, of the pre-polymer to the hydrophilic diol is 1:1 to 1:8.