POLYISOCYANATE ADHESIVE FOR PLYWOOD

摘要

Use of a polyisocyanate composition as an adhesive in lignocellulosic-based structural lamination manufacture characterised in that said polyisocyanate composition comprises an isocyanate-containing prepolymer composition having an NCO content of from 5 to 25 % by weight as obtainable by reacting an isocyanate-reactive polymer composition having an average nominal functionality of from 2 to 4 and an average equivalent weight of from 500 to 3000 with a stoichiometric excess of a diphenylmethane diisocyanate compositon.