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Lubricious coatings

  • US 6,020,071 A
  • Filed: 11/26/1997
  • Issued: 02/01/2000
  • Est. Priority Date: 06/03/1995
  • Status: Expired due to Term
First Claim
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1. 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.

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