This invention relates to a process for modifying wood. The process comprises treating the wood with an impregnating solution comprising an alkali metal (or alkaline earth metal) silicate, under conditions sufficient to impregnate the wood with one or more of the components of the impregnating solution. The process can comprise an optional second impregnation with a second impregnating solution. The process also comprises adding gaseous carbon dioxide to the treated wood, in the absence or presence of water, under pressure ranging from about 2 to about 12 bars, thereby lowering the pH of the treated wood to about 11 or below, to stabilize and/or fix the components of the impregnating solution in the wood. The process is green, non-toxic, and the resulting modified wood or wood product can be used across all primary construction and infrastructure applications.

The present invention provides a solution and related composition of matter and methods which synergistically improves a fungicide's effectiveness in resisting undesired fungal growth. The invention also provides wood and wood products which have been treated with the solution, method or compound. The solution may contain coformulants which do not alter the performance of the basic technology.

A wood preservative composition comprising 4,5-dichloro-2-octylisothiazol-3(2H)-one, a method of treating a wood substrate therewith, and a wood product produced therefrom are provided. The wood preservative composition comprises at least 0.5% by weight of DCOI based on the total weight of the composition and a retaining additive comprising a solvent-borne polymeric resin, N a wax, or a combination thereof. A weight ratio of the DCOI to the retaining additive in the composition is in a range of 1:5 to 5:1.

A wood preservative composition comprising 4,5-dichloro-2-octylisothiazol-3 (2H)-one, a method of treating a wood substrate therewith, and a wood product produced therefrom are provided. The wood preservative composition comprises at least 0.5% by weight of DCOI based on the total weight of the composition and a retaining additive comprising a solvent-borne polymeric resin, a wax, or a combination thereof. A weight ratio of the DCOI to the retaining additive in the composition is in a range of 1:5 to 5:1.

The present disclosure discloses a method for preparing an anti-mold and odor-removing oriented strand board (OSB). The anti-mold and odor-removing OSB includes a biologically active substance. The method includes preparing the biologically active substance, preparing a molecular nest carrier, loading the molecular nest carrier with the biologically active substance, preparing a functional impregnating agent, and impregnating a OSB with the functional impregnating agent. Preparing the molecular nest carrier includes first-time modifying zeolite powder, second-time modifying zeolite powder, modifying -cyclodextrin, mixing, and cross-linking. The anti-mold and odor-removing OSB prepared by the present disclosure exhibits excellent antibacterial, anti-mold and odor-removing performance, high mechanical strength, and superior aging resistance.

A stable, low pH aqueous silicate suspension is disclosed for modifying wood article(s). The suspension includes: a metal silicate having a solution concentration of from 1.5 wt % to 52 wt % and characterized by a modulus of from about 1.8 to about 4.0; at least one of a protic acid solution and a buffering acid solution in an amount effective to acidify the metal silicate to a pH of 3.0 or less, preferably to a pH between 1.0 and 3.0; and a multivalent metal salt having a solution concentration from 5 wt % to 25 wt %. The suspension has a pH of 3.0 or less. Wood articles impregnated with the suspension and processes for modifying wood articles with the suspension are also disclosed. The stable, low pH aqueous silicate suspensions provide for an increased depth of impregnation into wood articles as compared with conventional silicate treatments.

A wood preservative composition and method for preserving wood by contacting wood with said composition comprising a polyurethane polymer, non-aqueous solvents, and a wood preservative active.

The present invention provides a solution and related composition of matter and methods which synergistically improves a fungicide's effectiveness in resisting undesired fungal growth. The invention also provides wood and wood products which have been treated with the solution, method or compound. The solution may contain coformulants which do not alter the performance of the basic technology.

A wood preservative composition comprising 4,5-dichloro-2-octylisothiazol-3(2H)-one, a method of treating a wood substrate therewith, and a wood product produced therefrom are provided. The wood preservative composition comprises at least 0.5% by weight of DCOI based on the total weight of the composition and a retaining additive comprising a solvent-borne polymeric resin, a wax, or a combination thereof. A weight ratio of the DCOI to the retaining additive in the composition is in a range of 1:5 to 5:1.

A method of treating a cellulose-based material, for example wood and engineered wood is provided, wherein the process involves the following steps: selecting and placing the cellulose-based material in a treatment chamber; impregnating the cellulose-based material with an impregnating agent consisting of an aqueous solution comprising a fluid suitable for esterification; facilitating a hydrolysis process whereby the impregnating agent reacts resulting in the formation of esters and polyesters inside the cellulosed-based material.