Patent ID: 7141195

Claim:
A process for making engineered lignocellulosic-based panels, said process comprising: adding to green lignocellulosic particles before the green particles are dried a low-nitrogen content, high molecular weight, phenol-formaldehyde resin in an amount from about 1 to 25 weight percent based on the total weight of the particles, wherein the first resin is phenol-formaldehyde resin having a nitrogen content of from 0 to 3%, a viscosity of about 20 to 2000 cps, and a molar ratio of formaldehyde/phenol of from 1.2 to 3.0; drying the green particles to obtain dried particles having a moisture content of from 1 to 8%; adding a second resin in an amount from about 1.7 to 8 weight percent based on the total weight of the particles; and consolidating the dried particles under heat and pressure.