Co-adhesive system for bonding wood, fibers, or agriculture based composite materials

A method of making a composite board selected from a group consisting of a particle board, plywood, oriented strand board, medium density fiberboard, hardboard, structural strand lumber, said method comprising the steps of:

• (a) placing a strand form of an agricultural or wood fiber in a rotatable blender;
• (b) spray an atomized adhesive into said blender, said adhesive being a mixture of fast setting resin material in combination with a slow setting conjugated drying oil rebase agent, said resin comprising monomeric diisocyanate and said conjugated drying oil being linseed oil treated with ruthenium in the absence of oxygen and the presence of formic acid, said conjugated drying oil having a viscosity range which make it pourable and sprayable at ambient temperatures;
• (c) forming the fiber of step (a) combined with the adhesive of step (b) into a mat according to the fiber arrangement in said selected composite boards by moving said fiber of step (a) through an orienter which places said fibers in an orientation according to said fiber arrangement;
• said fiber arrangement being formed in successive layers, the fibers in each layer being aligned in a direction which is perpendicular to the fibers in its neighbor layers;
• and
• (d) subjecting said mat of step (c) to a heat and pressure schedule within a press for a period of time;
• wherein step (d) comprises the further steps of (d) (1) initially subjecting the mat to a high pressure and high temperature for a period of time;
• (d) (2) terminating said high temperature while holding said high pressure for a first extended period of time:
• (d) (3) reducing said high pressure and cooking said mat for a second extended period of time;
• (d) (4) reducing said pressure to zero and terminating said cooking for a third extended time period long enough to de-gas said mat:
• (d) (5) opening said press at the end of said third extended time period:
• and (d) (6) removing said mat from said press after completion of said heat and pressure schedule.