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US 2015/0175841 A1Published application
Fire-Resistant Coating and Wood Products
AssigneeWeyerhaeuser NR Company
InventorsErik M. Parker, Glen Robak, Jack G. Winterowd
Life of this patent
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Abstract
The present disclosure provides formulations that provide fire resistance when applied as a coating to a surface (e.g., the surface of a wood product). The compositions include an isocyanate, a brominated compound that is reactive with the isocyanate to form a polyurethane, an intumescent component, and a fire-retardant synergist. Wood products treated with the composition, as well as methods for applying the composition to a surface, are also provided.
Claims20
A fire-resistant formulation for a wood product, comprising a polyurethane matrix comprising:
- an isocyanate, wherein the isocyanate is present in a quantity ranging from 15% to 40% by mass of the formulation;
- a brominated compound that is reactive with the isocyanate to form a polyurethane, wherein the brominated compound is present from about 10% to 80% by mass of the formulation;
- an intumescent component, wherein the intumescent component is present in a quantity ranging from 1% to 25% by mass of the formulation;
- and
- a fire-retardant synergist, wherein the synergist is present in a quantity ranging from 0.25% to 15% by mass of the formulation.
2 more elements
Dependencies are inferred from the claim text.