High weight percent gain (WPG) furfural-urea modification of wood

摘要

This invention provides methods of furfural-urea modification of wood, and more particularly the present invention relates to the impregnation, and polymerization of, furfural-urea formulations under conditions of high weight percent gain (WPG) into wood. Wood is modified by impregnating wood first with furfural, thereafter impregnating the wood with a solution of urea, water and an acidic catalyst for polymerizing the mixture of furfural and urea in the wood. The wood is then dried and cured at the same time.