| 摘要 |
An adhesive binder for bonding lignocellulosic particles, fibers and flakes of vegetable origin for the preparation of particle boards, fiber boards, flake boards and similar wood-based products, and the preparation process thereof, and the prepared fiber board or other end product by using said adhesive binder, and the process used for the preparation of said product. Said adhesive binder comprises an oxidized water soluble fraction derived from mechanical or chemimechanical pulping of lignocellulosic raw materials, and can further contain, e.g., lignin isolated from chemical pulping, or a surfactant. The preparation of the adhesive binder composition comprises the steps of separating a liquid effluent from wood raw material and concentrating and oxidizing said liquid effluent in an aqueous suspension containing an oxidase and introducing oxygen-containing gas into said suspension.
|
