C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
C09J 197/02 (2006.01) C08L 97/02 (2006.01) C09J 5/08 (2006.01) C09J 197/00 (2006.01) D21J 1/00 (2006.01)
Patent
CA 2277286
The invention concerns a lignin-based adhesive binder composition for particle boards and similar wood-based products, comprising a foamed aqueous mixture of fibers and carbohydrates obtained from a process of pulping lignocellulosic materials, the mixture being foamed to 1.1 to 10 times the volume of the liquid mixture. The invention also concerns a method of preparing a lignin- based adhesive binder, comprising the steps of providing lignin isolated from a pulping process of lignocellulosic materials, providing fibers based on wood or annual or perennial plants, forming an aqueous suspension of the lignin and the fibers, and foaming the aqueous suspension to provide a foamed adhesive binder composition containing the solids in a homogeneous dispersion.
L'invention concerne une composition de liant adhésif à base de lignine pour la fabrication de panneaux de particules et autres produits analogues à base de bois, renfermant un mélange mousseux aqueux de fibres et d'hydrates de carbone qui résulte d'un processus de délignification de matières lignocellulosiques. Le volume de ce mélange formé en mousse correspondant à 1,1 et 10 fois le volume du mélange liquide. On décrit aussi un procédé de fabrication de liant adhésif à base de lignine, qui consiste à fournir la lignine isolée à partir d'un processus de délignification de matières lignocellulosiques, à fournir des fibres de bois ou de plantes annuelles ou pluriannuelles, à former une suspension aqueuse avec la lignine et les fibres, et provoquer le moussage de ladite suspension de manière à obtenir une composition mousseuse de liant adhésif qui renferme les matières sèches en dispersion homogène.
Gadda Lars
Hase Anneli
Kataja Kirsi
Qvintus-Leino Pia
Tuominen Simo
Neste Chemicals Oy
Swabey Ogilvy Renault
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