EP 1651402 B1 20110126 - TREATMENT OF THERMALLY MODIFIED WOOD
Title (en)
TREATMENT OF THERMALLY MODIFIED WOOD
Title (de)
BEHANDLUNG VON THERMISCH MODIFIZIERTEM HOLZ
Title (fr)
TRAITEMENT DE BOIS THERMO-MODIFIE
Publication
Application
Priority
- FI 2004000462 W 20040723
- FI 20031103 A 20030725
Abstract (en)
[origin: WO2005009700A1] The invention relates to treatment of thermally modified wood. Thermal modification means controlled heating treatment of wood most appropriately under moist atmosphere so as to improve the dimensional stability and decay resistance of the wood. In accordance with the invention, the water absorption tendency of themally modified wood is reduced by treating the wood with a hydrophobic sizing agent reactive with cellulose, the treatment resulting in water-repellent wood. The wood can be treated with a solution containing a sizing agent, and then the solvent is evaporated by drying. Suitable sizing agents comprise alkyl ketene dimers (AKD) and alkenyl succinic acid anhydrides (ASA) dissolved in acetone, for instance. When ASA is used, the dried wood impregnated with the sizing agent requires an additional heating treatment in order to become hydrophobic.
IPC 8 full level
IPC 8 main group level
B27K (2006.01)
CPC (source: EP)
B27K 3/36 (2013.01); B27K 5/001 (2013.01); B27K 5/04 (2013.01); B27K 2240/70 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005009700 A1 20050203; AT E496747 T1 20110215; CA 2533114 A1 20050203; CA 2533114 C 20121120; DE 602004031233 D1 20110310; EP 1651402 A1 20060503; EP 1651402 B1 20110126; ES 2358800 T3 20110513; FI 118958 B 20080530; FI 20031103 A0 20030725; FI 20031103 A 20050126
DOCDB simple family (application)
FI 2004000462 W 20040723; AT 04742205 T 20040723; CA 2533114 A 20040723; DE 602004031233 T 20040723; EP 04742205 A 20040723; ES 04742205 T 20040723; FI 20031103 A 20030725