The invention relates to a method for the treatment of cellulosic material. The method is comprising the steps of impregnation of the cellulosic material and treatment of the impregnated cellulosic material by a fumigation step or an evaporation step. Impregnation is performed with a metal ion M and at least one ion precursor Z yielding an impregnated cellulosic material. The at least one ion precursor Z provides an anion A or an anion A and a cation Y comprised within at least one metal salt solution I or with a metal salt solution II comprising a metal ion M. The fumigation or evaporation step is yielding a cellulosic composite material comprising a compound M(NH4)A, MYA or M(OH)x, wherein M is a metal.

Provided is a flame retardant and latent hardener composition including a blend of 30-100% (by weight based on total solids) of diammonium hydrogen phosphate, and dihydrogen phosphate, 0-50% (by weight based on total solids) of monoammonium. The flame-retardant/hardener composition is prepared as a solid blend or a liquid composition, the liquid composition being an aqueous composition including a liquid aqueous solution of the contents ranging from 25% w/w to 80% w/w. Methods for making flame retarded fiber boards using the composition as flame retarder and a hardener for the resin used in the production of the boards are also provided.

A two-part flame-retardant, a flame-retardant oriented strand (OSB) and method for forming a flame-retardant OSB is provided. The two-part flame-retardant composition includes an aqueous solution containing a water-soluble flame-retardant and a flame-retardant powder that is incorporated into an oriented strand board without substantially affecting the mechanical properties of the oriented strand board. The method includes applying the aqueous solution containing a water-soluble flame-retardant to an oriented strand board furnish and applying a flame-retardant powder to the wetted furnish, without requiring an additional drying step.

A cloud-based system network for verifying and documenting prefabricating Class-A fire-protected wood-framed buildings produced from a prefabricated Class-A fire-protected wood-framed building factory system supporting multiple production lines for producing Class-A fire-protected wood-framed components including wall panels, floor panels, stair panels, floor trusses, and roof trusses for use in constructing custom and pre-specified prefabricated Class-A fire-protected wood-framed buildings. The system network includes (i) a data center with web, application and database servers for supporting a web-based site for hosting digital images of barcoded/RFID-tagged certificates attached to prefabricated Class-A fire-protected wood-framed building components, and other certification documents, and (ii) mobile smart-phones used to capture digital photographs and video recordings of Class-A fire-protected wood-framed building sections, and upload the captured digital images to the data center, for each prefabricated wood-framed building project, so that building purchasers, insurance companies, builders, architects and other stakeholders can review such certifications and documentations during the prefabrication of wood-framed buildings from the factory system.

The current invention concerns a method for producing an aqueous dispersion suitable for being used as a flame retardant additive to wood composite panels. At least one pH-regulator, at least one inorganic thickener, and optionally at least one smoke suppressing agent is added to a premix while maintaining the actuation of wet-milling systems until the dispersion is obtained.

Fire retardant composition for treatment of various wood products, method of producing the same and uses thereof. The compositions comprise an aqueous solution of bisphosphonate selected from 1-hydroxyethane 1,1-diphosphonic acid, an alkanol amine, and optionally an alkaline agent, the composition having a pH in the range of 4.0 to 7.0. The composition can be produced by mixing together 30 to 50 parts by weight of 1-hydroxyethane 1,1-diphosphonic acid; 1 to 10 parts by weight of an alkanol amine or mixture thereof, said alkanol amine being added in free form; and optionally 0.1 to 40 part by weight of an alkaline agent; and water. The compositions can be used for protecting wood not only against fire but also against mould, rot, blue stain, insect such as termite attacks on wood, dimensional changes, or a combination thereof due to environmental influence.

A process is provided for treating wood products including lumber, plywood and other engineered wood products comprising the steps of applying an aqueous fire-retardant impregnate and applying a coating to the surface of the wood product. In one embodiment, said process confers fire-retardant properties to the wood products sufficient to pass the extended burn test of ASTM E-84. The present invention also provides fire retardant wood products.

To provide a board material processing composition allowing for production of a board material laminate that is non-combustible and is excellent in adhesion performance. In order to solve this problem, a board material processing composition inhibiting combustion of a board material due to heating, comprises: a carbonization promotion component, being inorganic, promoting carbonization of an organic component within the board material at the heating; a chain inhibition component, being inorganic, inhibiting a reaction chain to a neighboring component due to a product of endothermic decomposition generated at the heating; and binder particles, being inorganic and hydrophobic, bonding the organic component within the board material to the carbonization promotion component and the chain inhibition component, wherein the carbonization promotion component includes boric acid, the chain inhibition component includes ammonium dihydrogen phosphate, and the binder particles include silica sand.

Method of treating wood products to improve fire resistance thereof. The method comprises treating wet wood objects with compositions comprising an aqueous solution of bisphosphonate selected from 1-hydroxyethane 1,1-diphosphonic acid, an alkanol amine, and optionally an alkaline agent, the composition having a pH in the range of 4.0 to 7.0 to impregnate the object with the compositions, and subjecting the object so obtained to drying to achieve aspiration of the pits of the wood object. The method can be used for protecting wood not only against fire but also against mould, rot, blue stain, insect such as termite attacks on wood, dimensional changes, or a combination thereof due to environmental influence.

A cloud-based system network for verifying and documenting prefabricating Class-A fire-protected wood-framed buildings produced from a prefabricated Class-A fire-protected wood-framed building factory system supporting multiple production lines for producing Class-A fire-protected wood-framed components including wall panels, floor panels, stair panels, floor trusses, and roof trusses for use in constructing custom and pre-specified prefabricated Class-A fire-protected wood-framed buildings. The system network includes (i) a data center with web, application and database servers for supporting a web-based site for hosting digital images of barcoded/RFID-tagged certificates attached to prefabricated Class-A fire-protected wood-framed building components, and other certification documents, and (ii) mobile smart-phones used to capture digital photographs and video recordings of Class-A fire-protected wood-framed building sections, and upload the captured digital images to the data center, for each prefabricated wood-framed building project, so that building purchasers, insurance companies, builders, architects and other stakeholders can review such certifications and documentations during the prefabrication of wood-framed buildings from the factory system.