Fine particle size boric acid dispersion, method of use in engineered wood product manufacture, method of coating wood products and product therefrom

An aqueous boric acid dispersion includes boric acid particles having a median particle size range of less than 44 microns and a solids content of boric acid particles of 50% or greater. The boric acid dispersion also includes an effective amount of at least one viscosity reducing agent such that th...

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Bibliographische Detailangaben
Hauptverfasser:	Do, Quang T, Freeman, Gary M, Sparks, Joshua D
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW ORSIMILAR MATERIALS CHEMISTRY COMPOSITIONS BASED THEREON COMPOUNDS THEREOF DYES INORGANIC CHEMISTRY MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NAILING OR STAPLING MACHINES IN GENERAL NATURAL RESINS NON-METALLIC ELEMENTS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PERFORMING OPERATIONS POLISHES PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FORIMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILARMATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITHPERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL
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Beschreibung
Zusammenfassung:	An aqueous boric acid dispersion includes boric acid particles having a median particle size range of less than 44 microns and a solids content of boric acid particles of 50% or greater. The boric acid dispersion also includes an effective amount of at least one viscosity reducing agent such that the boric acid dispersion has an initial Brookfield 2 rpm static viscosity of about 5,000 to about 25,000 centipoise and a three week aged Brookfield 2 rpm static viscosity of less than 250,000 centipoise, an optional amount of an alkali metal base, wherein the alkali metal base/boric acid mole ratio in the boric acid dispersion ranges from zero to about 0.01; and the balance water. The boric acid dispersion can be used in the manufacture of wood products like oriented strand board, medium density fiberboard, and particle board as well as to coat wood products to improve their fire retardancy.