Copper complexes and their use as wood preservatives

摘要

This invention relates to preservatives at neutral or slightly acidic pH containing copper complexes and calcium, magnesium, and/or zinc cations for protection of wood, cellulose, hemicellulose, and lignocellulose from decay caused by fungi.

主权项

1. A composition of matter consisting essentially of an aqueous solution of:
a) a copper complex comprising copper and a chelating compound comprising at least two functional groups selected from the group consisting of amidoximes, hydroxamic acids, N-hydroxyureas, N-hydroxycarbamates, and N-nitroso-alkyl-hydroxylamines; b) a neutralization reagent in an amount sufficient to solubilize the copper complex of (a) and bring the pH to not greater than about 7.5; and c) a divalent cation that is selected from the group consisting of magnesium and calcium, and combinations thereof, wherein the divalent cation is present in amounts from about 700 ppm to about 8000 ppm.