초록 ▼

Wood preservative compositions are disclosed. Treatment of lumber, plywood, and other wood products with a novel composition comprising the boron source composition, a melamine binder resin, and a urea casein activator resin protects lumber, plywood, and other wood products from attack by termites,

Wood preservative compositions are disclosed. Treatment of lumber, plywood, and other wood products with a novel composition comprising the boron source composition, a melamine binder resin, and a urea casein activator resin protects lumber, plywood, and other wood products from attack by termites, fungi, fire and flame. The preservative can be formed by combining a source of boron such as boric acid and the water-soluble salts thereof, a melamine binder resin, and a urea casein resin. A wood preservative is characterized by a weight ratio of the urea casing activator resin to the melamine binder resin ranging from about 1:20 to 1:4 and a weight ratio of the boron source composition to the melamine binder resin ranging from about 1.3:1 to 9.6:1.

대표청구항 ▼

Wood preservative compositions are disclosed. Treatment of lumber, plywood, and other wood products with a novel composition comprising the boron source composition, a melamine binder resin, and a urea casein activator resin protects lumber, plywood, and other wood products from attack by termites,

Wood preservative compositions are disclosed. Treatment of lumber, plywood, and other wood products with a novel composition comprising the boron source composition, a melamine binder resin, and a urea casein activator resin protects lumber, plywood, and other wood products from attack by termites, fungi, fire and flame. The preservative can be formed by combining a source of boron such as boric acid and the water-soluble salts thereof, a melamine binder resin, and a urea casein resin. A wood preservative is characterized by a weight ratio of the urea casing activator resin to the melamine binder resin ranging from about 1:20 to 1:4 and a weight ratio of the boron source composition to the melamine binder resin ranging from about 1.3:1 to 9.6:1. % of said interior; (iii) a wastewater inlet disposed near the upper end of the container and in communication with said interior for receiving wastewater influent carried into said container for treatment therein, said inlet disposed such that said wastewater influent within said container flows downward through said sand; (iv) a wastewater outlet disposed near the lower floor of said container; and (v) a conduit connected to and extending from said container, wherein said conduit is in communication with said wastewater outlet at one end and connected to a pump at another end of said conduit, said conduit further configured to carry treated wastewater effluent from said container through said wastewater outlet via said pump; and (b) removing treated wastewater effluent from said biofilter via a pump through said conduit. 17. The method of claim 16, wherein sand comprises at least 90% of said interior. 18. A biofilter for treating wastewater, said biofilter comprising: (a) a container having an interior, an upper end, and a lower floor, said floor having a plurality of apertures through which wastewater effluent may flow; (b) a plurality of sacks housed within said interior of said container, each of said sacks formed of a porous material; (c) a composition of fi