Composite wood products from solvent extracted wood raw material

Details Composite wood products from solvent extracted wood raw material Composite wood products from solvent extracted wood raw material

1995-12-27

1997-09-09

Szekely, Peter A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 13, 524 16, C08L 102

Patent

active

056657986

ABSTRACT:
Wood products of superior strength are produced from wood particulates that have been extracted with a solvent to remove volatile organic compounds and a significant proportion of pitch from the wood particulates. The products are especially resistant to weakening caused by water immersion. As a consequence of the enhanced strength and stiffness of the composites, wood products may be made tier, and of lighter weight, for the same equivalent strength and stiffness at lower cost. The processes of drying the particulate raw material and forming the composite wood products, by subjecting to heat and pressure, are virtually free from emissions of volatile organic compounds into the environment.

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T. Chen et al., "Using solid-phase extraction to assess why aspen causes more pitch problems than softwoods in kraft pulping", Wood and Pulping Chemistry, vol. 78, No. 10, Oct. 1995, Tappi Journal, pp. 143-149.
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