Method for improving the surface hardness of a wooden body using an aqueous solution of an impregnating agent
AssigneeBASF SE
InventorsAndreas Krause, Holger Militz
Life of this patent
Estimating the term…
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 C1-5-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.
Claims19
A process for the production of a wood body having increased surface hardness, comprising impregnating an untreated wood body with an aqueous solution of
- A) an impregnating agent selected from the group consisting of a 1,3-bis(hydroxymethyl)-4,5-dihydroxyimidazolidin-2-one modified with methanol, ethanol, n-propanol, isopropanol, n-butanol, n-pentanol, ethylene glycol, diethylene glycol, 1,2- and 1,3-propylene glycol, 1,2-, 1,3- and 1,4-butylene glycol, glycerol, polyethylene glycols of the formula HO(CH2CH2O)nH, where n is from 3 to 20 and mixtures thereof, and
- B) a catalyst selected from the group consisting of ammonium salts metal salts, organic acids, inorganic acids and mixtures thereof,
- drying and then hardening at elevated temperature.
Dependencies are inferred from the claim text.