Pest-resistant spray foam formulations
AssigneeNatural Polymers, LLC
InventorBenjamin Brown
Life of this patent
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Abstract
Pest-resistant polyurethane spray foam formulations and products, including building insulation, are described. The “B” side of the formulation comprises water; a polyol composition comprising one or more polyols selected from glycerin-sucrose polyols, Mannich polyols, and aromatic polyester polyols, catalyst(s); surfactant(s); a blowing agent; and 0.5 to 5 wt. %, based on the amount of spray foam formulation, of a composition comprising a capsaicin compound. Capsaicin compounds can be successfully incorporated into spray foam formulations that process well to give high-quality foams. The foams inhibit termite infestation and can help to minimize or avoid structural damage that might otherwise go undetected.
Claims14
A pest-resistant polyurethane spray foam formulation, comprising:
- (a) an “A” side comprising one or more polyisocyanates;
- and
- (b) a “B” side comprising water;
- a polyol composition comprising one or more polyols selected from the group consisting of a glycerin-sucrose polyol, a Mannich polyol, and an aromatic polyester polyol;
- one or more amine catalysts;
- one or more urethane catalysts;
- one or more foam-stabilizing surfactants;
- a blowing agent;
- an amine-borate complex;
- and 0.1 to 10 wt. %, based on an amount of spray foam formulation, of a capsaicin compound;
- wherein a foam formed from the spray foam formulation exhibits improved termite resistance as compared to a foam formed from an otherwise identical spray foam formulation not including the capsaicin compound.
Dependencies are inferred from the claim text.