Use of polyisocyanate compositions as a binder for composite lignocellulosic materials

摘要

A polyisocyanate composition used for binding lignocellulosic materials comprising a polyisocyanate prepolymer, said prepolymer being the reaction product from a polyisocyanate and a polyol characterized in that the polyisocyanate composition has a free unreacted diisocyanate content of at least 8% by weight.