PROCEDE DE TRAITEMENT D'UN MATERIAU LIGNO-CELLULOSIQUE, EN PARTICULIER DE BOIS, EN VUE DE SA PRESERVATION ET D'UNE AMELIORATION DE CES PROPRIETES MECANIQUES, ET MATERIAU OBTENU

摘要

The invention concerns a method for treating a lignocellulosic material provided with hydroxyl functions, so as to enhance preservation of said material and to improve its mechanical properties. Said method consists in impregnating the lignocellulosic material with an alkenyl succinic anhydride ester or a alkenyl succinic acid ester, having at least an esterified aliphatic chain provided at chain end with an ester function and in grafting the alkenyl succinic anhydride ester or the alkenyl succinic acid ester on the lignocellulosic material causing at least part of the anhydride or acid radicals of the alkenyl succinic anhydride ester or of the alkenyl succinic acid ester to be fixed on the hydroxyl functions of the lignocellulosic material. Such a method with improved efficacy (protection against fungi/insects) can be used for protecting wood; it prevents its deterioration and is non-polluting for man and environment.