Dsm IP Assets B.v.

Dynea Oy

Jose Guadalupe Gomez Bueso

Jacobus Adriaan Antonius Vermeulen

Jozef Maria Johannes Mattheij

Lars Evers

Rodolphus Antonius Theodorus Maria Benthem, Van

Oriented strand board (OSB), comprising a core layer and two face layers, whereby the face layers comprise an adhesive composition, wherein the adhesive composition in at least one of the face layers comprises a resin composition comprising melamine, formaldehyde, optionally urea and aromatic hydroxyl compounds, wherein the molar ratio of melamine to formaldehyde is 1:0.8-4.0, the molar ratio of melamine to urea is 1:0-2.0 and the molar ratio of melamine to aromatic hydroxyl compounds is 1:0-2.0. In a preferred embodiment, both the face layers and the core layer comprise the said adhesive composition. The OSB's according to the invention can meet the OSB/3 and even the OSB/4 requirements in the EN 300 standards.

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Oslo, Norway

Jose Guadalupe Gomez Bueso