B - Operations – Transporting – 27 – N
Patent
B - Operations, Transporting
27
N
B27N 3/00 (2006.01) C08G 12/28 (2006.01)
Patent
CA 2594398
The invention relates to an Oriented Strand Board (OSB), comprising a core layer and two face layers, whereby at least one layer comprises an adhesive composition, characterised in that the adhesive composition comprises a resin composition comprising urea and formaldehyde, whereby the resin composition further comprises melamine and/or an aromatic hydroxyl compound, wherein: ~ the molar ratio of formaldehyde to the sum of melamine and the aromatic hydroxyl compound lies between 8:1 and 100:1 ; ~ the molar ratio of formaldehyde to the sum of -(NH2)2 and the aromatic hydroxyl compound lies between 1 :0.2 and 1 :2. The invention further relates to a process for preparing the OSB according to the invention.
L~invention concerne une carte à toron orienté (CTO), comprenant une couche centrale et deux couches de face, au moins une couche comportant une composition adhésive, caractérisée en ce que la composition adhésive comporte une composition de résine comprenant de l~urée et du formaldéhyde, la composition de résine comprenant en outre de la mélamine et/ou un composé hydroxyle aromatique, où : ~ le rapport molaire du formaldéhyde à la somme de la mélamine et du composé hydroxyle aromatique est dans la fourchette de 8:1 à 100:1 ; ~ le rapport molaire du formaldéhyde à la somme du -(NH2)2 et du composé hydroxyle aromatique est dans la fourchette de 1:0,2 et 1 :2. L~invention concerne en outre un procédé de préparation de la CTO selon l~invention.
Nusselder Jan Jacob Hendrik
Stijnen Hubertus Marie Christine
Dsm Ip Assets B.v.
Smart & Biggar
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