THE USE OF POLYISOCYANATE COMPOSITIONS AS 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 characterised in that the polyisocyanate composition has a free unreacted diisocyanate content of at least 8 % by weight