| 摘要 |
<p>Disclosed is a method for improving the durability, dimensional stability and surface hardness of a wooden body, wherein an untreated wooden body is impregnated with an aqueous solution consisting of A) an impregnating agent from the group of 1,3-bis(hydroxymethyl)-4,5-dihydroxyimidazolidinone-2, 1,3-bis(hydroxymethyl)-4,5-dihydroxyimidazolidinone-2, 1,3-dimethyl-4,5-dihydroxyimidazolidinone-2, dimethylol urea modified with a C1-5 alkohol, a polyol or mixtures thereof, bis(methoxymethyl) urea, tetramethylolacetylenediurea, 1,3-bis(hydroxymethyl)imidazolidinone-2, methylolmethyl urea or the mixtures thereof and B) consisting of a catalyst from the group of metal or ammonium salts, organic or inorganic acids or the mixtures thereof, and the wood and impregnating agent are subsequently reacted in humid conditions at high temperature.</p> |
