Method for improving the surface hardness of a wooden body using an aqueous solution of an impregnating agent
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United States of America Patent
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Feb 24, 2009
Grant Date -
Mar 9, 2006
app pub date -
Oct 1, 2003
filing date -
Oct 4, 2002
priority date (Note) -
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Abstract
A process for the production of a wood body having increased surface hardness, in which an untreated wood 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 with a C.sub.1-5-alcohol, a polyol or mixtures thereof, and B) a catalyst from the group consisting of ammonium or metal salts, organic or inorganic acids or mixtures thereof, dried and then hardened at elevated temperature is described.
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