High level loading of borate into lignocellulosic-based...

Details High level loading of borate into lignocellulosic-based... High level loading of borate into lignocellulosic-based...

B - Operations, Transporting

27

N

B27N 3/20 (2006.01) B27N 9/00 (2006.01) B32B 21/02 (2006.01)

Patent

CA 2197141

Although borates have been recognized as desirable for use in wood-based articles because of their preservative properties and low toxicity, it has not until now been possible to make effective use of them. A lignocellulosic e.g. wood-based composite article in accordance with the present invention includes a low solubility borate compound which is mixed with the lignocellulosic furnish, resin adhesive, and a flow agent, the resultant mixture being pressed into a mat and cured. The low solubility borate can be used in a quantity from about 1% to 10% by weight of the furnish. Suitable flow agents are polyethylene glycol and glycerol in the amount of 0.4% to about 4% by weight of the furnish.

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