Process for applying polyurethane to a substrate

  • US 6,521,298 B1
  • Filed: 03/11/2002
  • Issued: 02/18/2003
  • Est. Priority Date: 03/12/2001
  • Status: Expired due to Fees
First Claim
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1. A process of applying a polyurethane, comprising the steps of:

  • a) providing a substrate;

    b) heating said substrate to a selected temperature;

    c) selecting a polyol resin reactant;

    d) selecting an isocyanate reactant in a stoichiometric excess of said polyol resin reactant;

    e) mixing said reactants in a spraying mechanism;

    f) initiating reaction in said spraying mechanism effective to form a sprayable mixture of said reactants;

    g) forming a selected polyurethane from said reactants on the surface of said substrate to a selected thickness; and

    h) curing said selected polyurethane adhered to said substrate.

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