Method of treating a wood element

Abstract

The invention relates to a method of treating an element made from wood, particularly end grain wood, comprising the following steps: immersion impregnation of the wood element in a bath containing an aqueous composition comprising at least one first component corresponding to a polyhydric alcohol and at least one second component corresponding to a blocked polyisocyanate which can react under certain conditions with the aforementioned first component in order to form a polyurethane, whereby the second component is non-reactive to the first component and is inert in relation to the water during the impregnation step; removal from the impregnation bath and dehydration of the wood element; and formation of a polyurethane network within the wood element thus impregnated by reacting the first component with the second component during a heat treatment process consisting in raising the temperature. The invention also relates to the bath and the impregnation composition used to carry out said method to the wood element thus obtained and to the use of same.

Dependencies are inferred from the claim text.