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US 6,713,168 B2Granted
Fire retardant wood composite materials
AssigneeJ.M. Huber Corporation
InventorsFeipeng Liu, Nian-hua Ou
Life of this patent
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Abstract
The invention relates to a fire retardant oriented strand board composite material comprising a mixture of wood strands, at least one organophosphorus ester, at least one polymeric binder resin, and a wax. In a process embodiment of the present invention this mixture is consolidated under heat and pressure to form an oriented strand board composite panel, whereby during consolidation the organophosphorus ester chemically interacts with the polymeric binder to provide cross-linking between the binder and the organophosphorus ester.
Claims9
A wood composite material that is an oriented strand board comprising:
- (i) an organophosphorus ester compound, (ii) a polymer binder resin, and (iii) about 0.5 wt % to about 2.5 wt % wax, wherein said composite material achieves a limiting oxygen index in the range of about 26 to about 40, an average thickness swelling in the range of about 7% to about 15%, and said composite material has a fire spread rating of greater than about 25 and less than about 75.
Dependencies are inferred from the claim text.