Patent ID: 6503638
Filing Date: 2003-01-07
Classification: A01N,B27K,B27N,C08L,Y10T

Abstract:
A composition for impregnation of a lignocellulosic material, the composition comprising:(a) either (i) a high boiling point tar acid derived from a water stream produced during the distillation classification of coal; or (ii) a pitch derived from a water stream produced during the distillation classification of coal; (b) a solvent for component (a) selected from the group consisting of a low carbon alcohol selected from the group consisting of methanol, ethanol, propanol and butanol, an azeotrope of the low carbon alcohol and another solvent, and a mixture of the low carbon alcohol and water; (c) a resin component consisting essentially of phenol formaldehyde resole resin; (d) optionally an acid catalyst for the phenol formaldehyde resole resin; and (e) optionally a formaldehyde donor or a precursor of formaldehyde.