Wood preservative and method for producing same
AssigneeKoppers Performance Chemicals Inc.
InventorsJun Zhang, Peter Tham, John Horton
Life of this patent
Estimating the term…
Abstract
A synergistic aqueous wood preservative composition comprising a copper compound and penflufen. The copper compounds of the compositions of the invention may be soluble, partially solubilized or micronized particles. The penflufen of the compositions of the invention may be solubilized, emulsified or particulate. The wood preservative compositions of the present invention are surprisingly provided as stable dispersions and confer surprising and unexpected resistance to treated wood and wood products.
Claims22
A wood preservative composition for making a wood or wood product resistant to fungal decay, the wood preservative composition comprising:
- a. a copper compound, wherein the copper compound is micronized and the copper compound is basic copper carbonate;
- and
- b. penflufen;
- in a copper:penflufen ratio in a range of 5:1 to 200:1, wherein the wood preservative composition comprises less than 5% by weight of alkanolamines based on the total weight of the wood preservative composition.
Wood or a wood product that is resistant to fungal decay, the wood or wood product comprising a wood preservative composition, the wood preservative composition comprising:
- a. a copper compound, wherein the copper compound is micronized and the copper compound is basic copper carbonate;
- and
- b. penflufen;
- in a copper:penflufen ratio in a range of 5:1 to 200:1, wherein the wood or the wood product contains the penflufen in an amount in a range of 4 to 200 g/m3, wherein the wood preservative composition comprises less than 5% by weight of an alkanolamine based on the total weight of the wood preservative composition.
Dependencies are inferred from the claim text.