Impregnation of a lignocellulosic material
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United States of America Patent
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Jan 7, 2003
Grant Date -
N/A
app pub date -
Oct 27, 2000
filing date -
Mar 18, 1998
priority date (Note) -
Expired
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Abstract
A composition for impregnation of a lignocellulosic material such as wood or wood particles, comprises a high boiling point tar acid or a pitch derived from coal; a solvent for the tar acid or pitch selected from a low carbon alcohol, an aceotrope of a low carbon alcohol and another solvent, and a mixture of a lower carbon alcohol and water; a phenol formaldehyde resole resin; an acid catalyst for the phenol formaldehyde resole resin; and preferably a formaldehyde donor or a precursor thereof. There is also disclosed a method of preparing a finished product from a lignocellulosic material by using the impregnating composition.
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