Method for improving the surface hardness of a wooden body using an aqueous solution of an impregnating agent

摘要

A method for producing a wooden body having an enhanced surface hardness is disclosed, wherein an untreated wooden body is impregnated with an aqueous solution of (A) an impregnating agent consisting of a 1,3-bis(hydroxymethyl)-4,5-dihydroxyimidazolidin-2-one modified by a C1-5 alcohol, a polyol or the mixtures thereof, and (B) a catalyst from the group of ammonium salts or metal salts, organic or inorganic acids or the mixtures thereof. Said wooden body is then dried and hardened at a high temperature.