The present invention relates to a method for producing copper ammonia solutions by reacting a cuprous oxide with ammonia, carbon dioxide and an oxidant. The resulting copper-containing solution can then be used to formulate a variety of wood preserving products.

Stable wood preservative formulations comprising an amine copper complex, an azole compound, a cationic surfactant, and optionally, an organic solvent, are disclosed. The wood preservative formulations exhibit long-term stability and remain homogeneous, without the need for agitation.

Stable wood preservative formulations comprising an amine copper complex, an azole compound, a cationic surfactant, and optionally, an organic solvent, are disclosed. The wood preservative formulations exhibit long-term stability and remain homogeneous, without the need for agitation.

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.

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.

Disclosed herein are methods of modifying properties of a cellulosic material, the method comprising: depositing an additive onto the cellulosic material, the additive being in a vapor phase and configured to modify one or more properties of the cellulosic material; and adsorbing the additive into the cellulosic material, wherein the additive reacts with one or more functional groups of the cellulosic material. The depositing can comprise an atomic layer deposition of the additive onto the cellulosic material. The additive can be configured to react with a nucleophile in the cellulosic material. The one or more properties of the cellulosic material can include: hydrophobicity, thermal conductivity, thermal diffusivity, fungo-toxicity, toxicity, wettability, tensile strength, corrosiveness, biodegradability, bio-toxicity, or swelling.

Disclosed herein are methods of modifying properties of a cellulosic material, the method comprising: depositing an additive onto the cellulosic material, the additive being in a vapor phase and configured to modify one or more properties of the cellulosic material; and adsorbing the additive into the cellulosic material, wherein the additive reacts with one or more functional groups of the cellulosic material. The depositing can comprise an atomic layer deposition of the additive onto the cellulosic material. The additive can be configured to react with a nucleophile in the cellulosic material. The one or more properties of the cellulosic material can include: hydrophobicity, thermal conductivity, thermal diffusivity, fungo-toxicity, toxicity, wettability, tensile strength, corrosiveness, biodegradability, bio-toxicity, or swelling.

The invention relates to the use of penflufen for protecting wood and wood-comprising materials against wood-destroying basidiomycetes.

The invention relates to the use of penflufen for protecting wood and wood-comprising materials against wood-destroying basidiomycetes.

A treatment process and wood products thereof including a product formulation of a single phase solution combining a wood preservative (durable component) with a Flame Retardant component (FR) to produce a durable Flame Retardant (dFR) treated wood product. The durable component comprises a range of copper based and non-copper based wood preservatives, while the FR component comprises alkali metal silicates and alkali metal aluminate compounds. The dFR working solution undergoes chemical impregnation (treatment) followed by a heat (fixation) process step that locks the chemical into the wood making it non-leachable. The dFR treated wood products are tested for their enhanced fire performance properties. When heated, wood undergoes thermal degradation and combustion producing gases, vapors, tars and chars. Using a cone calorimeter burn test method, dFR treated wood products show a significant reduction in heat release rate, mass loss rate and smoke generated values compared to untreated radiate pine.