Composite materials.

摘要

Composite cellulosic materials having improved strength and water resistance properties are produced from substrates which have been treated with a solution of a polyfunctional isocyanate. Process is preferably employed in the production of chipboard and fibreboard. The preferred reagents are solution of di-isocyanates such as diphenylmethane di-isocyanate in an aprotic solvent such as acetone.