Patent GB-1023640-A (GB)
Title: Improvements in or relating to the preservation and fire-proofing of wood
IPC: B27K3/52
Filed: 1964-10-02
Abstract: A preserving and fireproofing composition for wood is in the form of an oil-in-water emulsion in which the water phase comprises 5-40% of inorganic borate and 0.5-2% of lignosulphonate emulsifier and the oil phase comprises 0.1-10% of a halo or nitro phenol and 0.2-25% of hydrocarbon wax dissolved in petroleum oil distillate, the ratio of oil phase to aqueous phase is 1-2.5 to 1, and the average diameter of the oil droplets is not greater than 7 microns.  The borate may be ammonium biborate; sodium or calcium metaborate; sodium tetraborate; ammonium, sodium, or lithium pentaborate; or metaboric acid.  The lignosulphonate emulsifier may be the ammonium, sodium, potassium, or calcium salt.  The halophenol may be 2, 4, 6-tri-, 2, 4, 5, 6-tetra-, or penta-chlorophenol.  The hydrocarbon wax may be paraffin or microcrystalline wax or petrolatum or a chlorinated derivative. The petroleum oil distillate may be mineral spirit, diesel oil, kerosene, gas, oil, toluene, ligroin, benzene, or gasoline.  The composition may also comprise a chromate or arsenate.  The wood may be treated at a temperature of up to 120 DEG C. and a pressure of up to 200 psig for a period of 2-12 hrs.ALSO:In an oil-in-water emulsion, the water phase comprises 5-40% of inorganic borate and 0,5-2% of lignosulphonate emulsifier, the oil phase comprises 0,1-10% of a halo- or nitrophenol and 0,2-25% of hydrocarbon wax dissolved in petroleum oil distillate, the ratio of oil phase to aqueous phase is 1-2,5 : 1, and the average diameter of the oil droplets is not greater than 7 microns.  The borate may be ammonium biborate; sodium or calcium metaborate; sodium tetraborate; ammonium, sodium, or lithium pentaborate; or metaboric acid.  The lignosulphonate emulsifier may be the ammonium, sodium, potassium, or calcium salt. The halophenol may be 2,4,6-tri-, 2,4,5,6-tetra-, or penta-chlorophenol.  The hydrocarbon wax may be paraffin or microcrystalline wax or petrolatum or a chlorinated derivative. The petroleum oil distillate may be mineral spirit, diesel oil, kerosene, gas oil, toluene, ligroin, benzene, or gasoline.  The composition may also comprise a chromate or arsenate.ALSO:A preserving and fireproofing composition for wood is in the form of an oil-in-water emulsion in which the water phase comprises 5-40% of inorganic borate and 0.5-2% of lignosulphonate emulsifier and the oil phase comprises 0.1-10% of a halo or nitro phenol and 0.2-25% of hydrocarbon wax dissolved in petroleum oil distillate, the ratio of oil phase to aqueous phase is 1-2.5 to 1, and the average diameter of the oil droplets is not greater than 7 microns.  The borate may be ammonium biborate; sodium or calcium metaborate; sodium tetraborate; ammonium, sodium, or lithium pentaborate; or metaboric acid.  The lignosulphonate emulsifier may be the ammonium, sodium, potassium, or calcium salt.  The halophenol may be 2, 4, 6-tri-, 2, 4, 5, 6-tetra-, or pentachlorophenol.  The hydrocarbon wax may be paraffin or microcrystalline wax or petrolatum or a chlorinated derivative. The petroleum oil distillate may be mineral spirit, diesel oil, p kerosene, gas oil, toluene, ligroin, benzene, or gasoline.  The composition may also comprise a chromate or arsenate.  The wood may be treated at a temperature of up to 120 DEG C and a pressure of up to 200 psig for a period of 2-12 hrs.