POLYISOCYANATE: FORMALDEHYDE BINDER SYSTEM FOR CELLULOSIC MATERIALS

摘要

A process for bonding together cellulosic materials under conditions of elevated pressure and temperature using a binder system comprising an organic polyisocyanate and formaldehyde. This novel system provides strong, moisture-resistant bonds, and allows cellulosic materials containing up to about 22% moisture to be pressure consolidated without predrying. Use of the binder system in fabricating particleboard products is exemplified.