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.

Techniques and products are described for coloring acetylated wood products. An acetylated wood product can be impregnated by a coloring medium within a chamber and the colorant or colorants contained within the coloring medium can be fixed to the acetylated wood product by the application of heat or by application of radio frequency radiation to color any external surface or interior region of the acetylated wood product which has been impregnated by the coloring medium.

Disclosed is a method for the continuous impregnation of wood elements, such as wood chips. The method comprises the subsequent steps of subjecting the wood elements to vacuum, to contact with acetylation fluid, and to impregnation pressure. Preferably, the process is conducted in a plant having conveyors, such as transportation screws, in suitable positions between the zones in which the subsequent process steps are conducted. The impregnation method is used in connection with the acetylation of the wood elements, and preferably is followed by a continuous acetylation process conducted in an acetylation reaction zone downstream of the zone where the impregnation is conducted.

A wood preservative composition and a method of manufacturing a wood preservative composition that includes a copper containing biocide, a zinc containing biocide, a boron containing biocide, and an azole are provided. The wood preservative composition exhibits improved biocidal efficacy against copper tolerant fungi.

A kit of parts is provided, comprising: in one part a) a water-borne stain; and, in another part b) a water-immiscible organic solvent-borne stain, wherein said water-borne stain is essentially free of resin and further contains at least one water-miscible organic solvent. Additionally, a method of coloring a wooden substrate is described, comprising the steps of: a) applying a water-borne stain to a surface of the wooden substrate, wherein the water-borne stain is essentially free of resin and comprises at least one water-miscible organic solvent; and thereafter b) applying a water-immiscible organic solvent-borne stain to said surface.

A kit of parts is provided, comprising: in one part a) a water-borne stain; and, in another part b) a water-immiscible organic solvent-borne stain, wherein said water-borne stain is essentially free of resin and further contains at least one water-miscible organic solvent. Additionally, a method of coloring a wooden substrate is described, comprising the steps of: a) applying a water-borne stain to a surface of the wooden substrate, wherein the water-borne stain is essentially free of resin and comprises at least one water-miscible organic solvent; and thereafter b) applying a water-immiscible organic solvent-borne stain to said surface.

A flame-retardant wood substrate is made of a wood substrate with a glass-clear coating, impregnation, or filing primer, which each contain a flame retardant made of at least one compound selected from a plurality of phosphorus compounds, and a finish layer disposed thereon.

A flame-retardant wood substrate is made of a wood substrate with a glass-clear coating, impregnation, or filing primer, which each contain a flame retardant made of at least one compound selected from a plurality of phosphorus compounds, and a finish layer disposed thereon.

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

The present invention is directed to amine soluble, or solid copper triazole based wood preservative formulations containing certain types of quaternary ammonium compounds, or nonionic sufactants, and the use of these quaternary ammonium compound-, or nonionic surfactant-containing formulations to pressure treat and preserve wood. The addition of the quaternary ammonium compounds, or nonionic surfactants to the wood preservation treatment solutions allows improved penetration of the copper from the solution into wood and reduces the duration of time required to effectively pressure treat the wood with the preservation composition.