Synergistic combination of insecticides to protect wood and wood-based products from insect damage
AssigneeKop-Coat, Inc.
InventorsRaymond Bender, Alan S. Ross, Hans A. Ward
Life of this patent
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Abstract
A wood treatment material having a synergistic combination of insecticides including boron-containing compounds and synthetic pyrethroids, is provided. This combination is shown to be especially effective in providing resistance to insect attack when wood is treated with this combination. Resistance to attack by Formosan termites, in particular, is provided, in a cost-effective manner. Also provided is wood treated by this combination, and a method of treatment for composite wood.
Claims18
An insecticide treated wood comprising wood treated with a wood treatment material comprising a synergistic combination of a boron-containing insecticide and a synthetic pyrethroid selected from the group consisting of deltamethrin, permethrin, cyfluthrin, trilomethrin, cypermethrin and resmethrin, said boron-containing insecticide and said synthetic pyrethroid present in sufficient amounts in the wood treatment material so that wood treated with the wood treatment material contains said boron-containing insecticide in an amount of about 0.05 to 2.0 wt % and said synthetic pyrethroid in an amount of about 1 ppm to 1000 ppm, based on the weight of the wood after treatment.
A method of treating wood comprising treating wood with a wood treatment material comprising a synergistic combination of a boron-containing insecticide and synthetic pyrethroid selected from the group consisting of deltamethrin, permethrin, cyfluthrin, trilomethrin, cypermethrin and resmethrin, said boron-containing insecticide and said synthetic pyrethroid present in sufficient amounts in the wood treatment material so that wood treated with the wood treatment material contains said boron-containing insecticide in an amount of about 0.05 to 2.0 wt % and said synthetic pyrethroid in an amount of about 1 ppm to 1000 ppm, based on the weight of the wood after treatment.
Dependencies are inferred from the claim text.