Protecting wood with stabilized boron complexes
AssigneeBoard of Supervisors of Louisiana State University and Agricultural and Mechanical College
InventorsDiana N. Obanda, Todd F. Shupe
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Abstract
Wood is treated to reduce or prevent biodeterioration using boron compounds. A significant portion of the active boron is retained within the wood when leached. Boric acid is complexed with water-soluble bifunctional polyhydroxyl aromatic compounds, and the boric acid bifunctional polyhydroxyl aromatic complex is deposited into wood treated with a silicate. The complexing agents comprise polyfunctional compounds, including at least two hydroxyl groups, and one or more separate acid groups.
Claims11
A method for protecting wood;
- said method comprising treating the wood with a silicate, boric acid, and a complexing agent;
- wherein
- c. the complexing agent comprises chromotropic acid (4,5-dihydroxy-2,7-naphthalenedisulfonic acid).
A treated wood product comprising wood treated with a silicate, boric acid, and a complexing agent;
- wherein
- c. said complexing agent comprises chromotropic acid (4,5-dihydroxy-2,7-naphthalenedisulfonic acid).
Dependencies are inferred from the claim text.