Use of nir (near-infrared spectroscopy) in composite panel...

Details Use of nir (near-infrared spectroscopy) in composite panel... Use of nir (near-infrared spectroscopy) in composite panel...

C - Chemistry, Metallurgy

08

G

C08G 12/12 (2006.01) C08G 8/10 (2006.01) C08G 12/32 (2006.01) G01N 21/35 (2006.01)

Patent

CA 2432605

Method for controlling the production of aqueous formaldehyde resin compositions applied in the manufacture of wood-based panels, in which formaldehyde takes part in a reaction with one or a combination of co resin forming material (of the type phenol, urea, melamine). The method comprises the monitoring of the formation of the aqueous reaction mixture and of the course of the reaction by near-infrared (NIR) spectroscopy and adjusting the course of the reaction (when necessary) in accordance with the results of the spectroscopy to obtain optimum conditions for the reaction.

L'invention se rapporte à un procédé de régulation de la production de compositions de résines formaldéhydes aqueuses utilisées pour la fabrication de panneaux à base de bois, dans lequel le formaldéhyde prend part à une réaction avec une matière ou une combinaison de matières susceptible de former une co-résine (du type phénol, urée, mélamine). Ledit procédé comprend une surveillance de la formation du mélange réactionnel aqueux et du déroulement de la réaction par spectroscopie proche infrarouge (INR) ainsi que la modification du déroulement de la réaction (si nécessaire) en fonction des résultats de la spectroscopie de manière à obtenir des conditions optimales pour la réaction.

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