Adhesive for fiber boards
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United States of America Patent
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Sep 11, 2001
Grant Date -
N/A
app pub date -
Nov 9, 1999
filing date -
Jan 14, 1997
priority date (Note) -
Expired
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Abstract
An adhesive binder for bonding together lignocellulosic particles, fibers and flakes of vegetable origin to form particle boards, fiber boards, flake boards and similar wood-based products, comprising a solublized fraction obtained by enzymatic treatment of fibrous, lignocellulosic raw materials. The present binder can be obtained by treating fibrous lignocellulosic raw material with a hydrolytic enzyme in an aqueous medium, recovering the solubilized material of the enzymatic treatment, forming an aqueous suspension containing said material and an oxidase, and oxidizing said material in the presence of said oxidase by introducing oxygen-containing gas into the supension. This method thus produces an increased amount of a water-soluble fraction containing carbohydrates, extractives and lignin useful as an adhesive binder.
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