Wood adhesive system with isocyanates and functionalized oil
OwnerJianwen Niinventor
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Abstract
A method or process for a wood adhesive system comprising polymeric diphenylmethane diisocyanate (pMDI) in combination with a functionalized oil. The wood adhesive system may be used in the manufacturing of engineered wood products, such as oriented-strand board, which typically are produced by various primary, and sometimes secondary, pressing processes. This combination provides an adhesive with reduced usage of pMDI while maintaining adhesive performance. The functionalized oil may be a modified vegetable oil, including, but not limited to, a soy oil chemically modified to incorporate hydroxyl groups, or amine groups, to its molecular chains.
Claims19
A method of producing engineered wood, comprising the steps of:
- providing a plurality of lignocellulosic strands or fibers;
- treating the plurality of lignocellulosic strands or fibers with a binder comprising polymeric diphenylmethane diisocyanate (pMDI), and a functionalized oil;
- forming a multi-layer mat from the plurality of treated wood strands;
- and
- applying heat and pressure to the multi-layer mat to produce a manufactured wood product.
An adhesive for the production of composite wood products, comprising:
- polymeric diphenylmethane diisocyanate (pMDI);
- and
- a functionalized vegetable oil;
- wherein the adhesive is configured to be mixed with lignocellulosic strands, fibers, and/or materials to bind said strands upon application of heat and pressure to form composite wood products.
Dependencies are inferred from the claim text.