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US 2014/0193587 A1Published application
Methods of treating wood with preservatives using supercritical noble gases
AssigneeEmpire Technology Development LLC
InventorsWilliam B. Carlson, Gregory D. Phelan
Life of this patent
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Abstract
Disclosed are methods and compositions pertaining to the preservation of wood using one or more noble gasses in conjunction with wood preservatives.
Claims45
A method of treating a wood substrate, the method comprising:
- providing a wood substrate;
- and
- contacting the wood substrate with a mixture comprising a supercritical liquid and at least one wood preservative, wherein the supercritical liquid comprises at least one noble gas at a weight percent greater than 1.5%, and wherein the contacting occurs at a pressure sufficient to maintain the supercritical liquid in a supercritical liquid state.
A composition comprising a supercritical liquid and at least one wood preservative, wherein the supercritical liquid comprises at least one noble gas and the wood preservative comprises a metal that is not an oxide or hydroxide.
Dependencies are inferred from the claim text.