Amino acid-solubilized borate, silicate and zinc...

A - Human Necessities – 01 – N

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A01N 59/16 (2006.01) A01N 31/00 (2006.01)

Patent

CA 2563020

Compositions and methods are provided for treating products containing wood fibers to provide protection against wood destroying organisms and fire, and resistance against leaching of the preservative from the wood fibers by water in exposed environments such as exterior applications. The methods involve applying to a substrate an aqueous preservative composition containing a boron compound, a source of zinc, an aqueous silicate, a source of alkalinity, and an amino acid. The compositions may be applied by vacuum and/or pressure treatment or dip treatment under atmospheric pressure.

L'invention concerne des compositions et des procédés pour le traitement de produits qui contiennent des fibres de bois, permettant d'assurer la protection contre les organismes destructeurs du bois et le feu, et d'assurer la résistance contre le lessivage à l'eau de préservateur des fibres de bois, dans des environnements exposés du type applications en extérieur. Les procédés décrits consistent à appliquer sur un substrat une composition préservatrice aqueuse qui contient un composé au bore, une source de zinc, un silicate aqueux, une source d'alcalinité, et un acide aminé. Les compositions décrites peuvent être appliquées par traitement sous vide et/ou à la pression ou encore au bain sous pression atmosphérique.

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