Wood preservative and method for producing same
AssigneeKoppers Performance Chemicals Inc.
InventorsJun Zhang, Peter Tham, John Horton
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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.
Claims25
A wood preservative composition for making a wood or wood product resistant to fungal decay, the wood preservative composition comprising:
- an aqueous carrier;
- a copper component, wherein the copper component is micronized;
- and
- penflufen,
- in a copper:penflufen weight 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 a total weight of the wood preservative composition.
A method for preparing a wood preservative composition, the method comprising:
- milling a slurry of a copper component and an aqueous carrier with a grinding media, thereby forming a micronized copper component;
- and
- mixing the slurry of the micronized copper component with penflufen in a copper:penflufen ratio in a range of 5:1 to 200:1 to prepare the wood preservative composition, wherein the wood preservative composition comprises less than 5% by weight of alkanolamines based on a total weight of the wood preservative composition.
Dependencies are inferred from the claim text.