The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 09, 2008
Filed:
Jun. 28, 2004
Lars Evers, Sittard, NL;
Rodolphus Antonius Theodorus Maria Benthem, Van, Limbricht, NL;
Jozef Maria Johannes Mattheij, Sittard, NL;
Jose Guadalupe Gomez Bueso, Oslo, NO;
Jacobus Adriaan Antonius Vermeulen, Geleen, NL;
Lars Evers, Sittard, NL;
Rodolphus Antonius Theodorus Maria Benthem, Van, Limbricht, NL;
Jozef Maria Johannes Mattheij, Sittard, NL;
Jose Guadalupe Gomez Bueso, Oslo, NO;
Jacobus Adriaan Antonius Vermeulen, Geleen, NL;
DSM IP Assets B.V., Heerlen, NL;
Dynea Oy, Helsinki, FI;
Abstract
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.