METHOD FOR WATERPROOFING LIGNOCELLULOSIC MATERIALS

摘要

(EN) The invention relates to a method for waterproofing lignocellulosic materials by impregnating the lignocellulosic material with a waterproofing agent, whereby the lignocellulosic material is impregnated with a hardenable aqueous composition before or during waterproofing, said composition containing at least one cross-linkable compound, selected from a) low-molecular weight compounds V, having at least two N-bonded groups of formula CH₂OH, wherein R=hydrogen or C₁-C₄ alkyl, and/or one 1,2-bis-hydroxyethan-1,2-diyl group, bridging two nitrogen atoms, beta) precondensates of the compound V and & gammad;) reaction products or mixtures of the compound V with at least one alcohol, selected from C₁-C₆ alkanols, C₂-C₆ polyols and oligo-C₂-C₄-alkylene glycols.