EP 1858678 B1 20101006 - METHOD FOR PRODUCING WOOD-BASE MATERIALS
Title (en)
METHOD FOR PRODUCING WOOD-BASE MATERIALS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON HOLZWERKSTOFFEN
Title (fr)
PROCEDE DE PRODUCTION DE MATERIAUX A BASE DE BOIS
Publication
Application
Priority
- EP 2006001980 W 20060303
- DE 102005010041 A 20050304
Abstract (en)
[origin: US2008156435A1] The present invention relates to a process for the production of wood-base materials which have at least one thin veneer layer adhesively bonded over the surface to a substrate or to further veneer layers, which process comprises the following steps: i. impregnation of a veneer with an aqueous curable composition which comprises a) at least one curable urea compound selected from urea compounds H which have at least one N-bonded group of the formula CH<SUB>2</SUB>OR, where R is hydrogen or C<SUB>1</SUB>-C<SUB>4</SUB>-alkyl, and/or a 1,2-bishydroxyethane-1,2-diyl group bridging the two nitrogen atoms of the urea, precondensates of the urea compound H, and reaction products or mixtures of the urea compound H with at least one alcohol which is selected from C<SUB>1</SUB>-C<SUB>6</SUB>-alkanols, C<SUB>2</SUB>-C<SUB>6</SUB>-polyols and oligoethylene glycols, and b) at least one catalyst K effecting crosslinking of the urea compound; ii) gluing of the impregnated veneer and/or the substrate with a glue composition and iii) processing of the glued veneer to give a wood-base material at elevated temperature with curing of the crosslinkable urea compound, the impregnated veneer comprising the crosslinkable urea compound in substantially uncrosslinked form before the gluing in step ii).
IPC 8 full level
CPC (source: EP KR US)
B27D 1/00 (2013.01 - KR); B27K 3/15 (2013.01 - EP KR US); B27K 5/0085 (2013.01 - EP US); B27M 3/04 (2013.01 - KR); Y10T 428/31591 (2015.04 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2008156435 A1 20080703; US 7976668 B2 20110712; AT E483563 T1 20101015; AU 2006219949 A1 20060908; AU 2006219949 B2 20110602; BR PI0609033 A2 20161129; CA 2599209 A1 20060908; CN 101247931 A 20080820; CN 101247931 B 20101013; DE 102005010041 A1 20060907; DE 502006008017 D1 20101118; EP 1858678 A2 20071128; EP 1858678 B1 20101006; ES 2354084 T3 20110309; JP 2008531344 A 20080814; JP 5150268 B2 20130220; KR 20080002807 A 20080104; MX 2007010430 A 20070927; NO 20074255 L 20071130; RU 2007136552 A 20090410; WO 2006092331 A2 20060908; WO 2006092331 A3 20080306; ZA 200708404 B 20091125
DOCDB simple family (application)
US 81728406 A 20060303; AT 06707410 T 20060303; AU 2006219949 A 20060303; BR PI0609033 A 20060303; CA 2599209 A 20060303; CN 200680007160 A 20060303; DE 102005010041 A 20050304; DE 502006008017 T 20060303; EP 06707410 A 20060303; EP 2006001980 W 20060303; ES 06707410 T 20060303; JP 2007557442 A 20060303; KR 20077022689 A 20071004; MX 2007010430 A 20060303; NO 20074255 A 20070821; RU 2007136552 A 20060303; ZA 200708404 A 20071002