C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 12/32 (2006.01) B27D 1/04 (2006.01) C09J 161/28 (2006.01)
Patent
CA 2547766
The invention relates to plywood, comprising at least two wood veneer layers and at least one adhesive layer, whereby the adhesive layer comprises a resin composition comprising a triazine compound (T), formaldehyde (F) and optionally urea, wherein the molar F/(Nh2)2 ratio of the adhesive layer lies between 0.70 and 1.10 and the molar F/T ratio of the adhesive layer lies between 1.0 and 3.5. The invention further relates to a process for the preparation of plywood.
L'invention concerne du contreplaqué qui comprend au moins deux couches de feuille de bois et au moins une couche adhésive. Cette dernière comprend une composition résineuse renfermant un composé de trazine (T), du formaldéhyde (F) et éventuellement de l'urée. Le rapport molaire F7(NH¿2?)¿2? de la couche adhésive est compris entre 0,70 et 1,10 et son rapport molaire F/T entre 1,0 et 3,5. L'invention concerne également un procédé de préparation de contreplaqué.
Evers Lars
Mattheij Jozef Maria Johannes
Dsm Ip Assets B.v.
Smart & Biggar
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