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Thermosetting Adhesive Based on Tannin and Poly(N-Hydroxymethyl Acrylamide)

A thermosetting adhesive consisting of tannin and poly(N-hydroxymethylacrylamide) was studied. This adhesive is an environmentally friendly one using only water as the solvent and is partly based on a natural product. It showed good bonding strength and water resistance for a wood product although those properties were lower than the level of phenol-formaldehyde resin.