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Polyurethanes, Articles and Coatings Prepared Therefrom and Methods of Making the Same

  • US 20090280709A1
  • Filed: 03/24/2009
  • Published: 11/12/2009
  • Est. Priority Date: 09/01/2004
  • Status: Abandoned Application
First Claim
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1. A polyurethane comprising a reaction product of components comprising:

  • (a) about 1 equivalent of at least one polyisocyanate;

    (b) about 0.05 to about 1 equivalents of at least one branched polyol having 4 to 18 carbon atoms and at least 3 hydroxyl groups;

    (c) about 0.01 to about 0.3 equivalents of at least one polycarbonate diol; and

    (d) about 0.1 to about 0.9 equivalents of at least one polyol different from the branched polyol and having 2 to 18 carbon atoms,wherein the reaction product components are essentially free of polyether polyol and the reaction components are maintained at a temperature of at least about 100°

    C. for at least about 10 minutes.

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