| abstract |
Process for preparing a urea-formaldehyde resin in an aqueous formulation particularly intended for use as a particleboard binder. The resin cures to be low emitting. In the cured state, the resin has more than twice as many methylene groups as methylene ether groups, and generally is characterized by residual formaldehyde that is at least 40% and often 50% less than that of a cured resin of the same F/U mole ratio but produced by an initial base catalyzed methylolation procedure of which the primary prepolymer products are mostly monomethylol and dimethylol urea precursors, followed by condensation. |