WOOD PHENOL ADHESIVES PREPARED FROM CARBOXYMETHYLATED WOOD .1.

Preparation of carboxymethylated wood (CM wood)-phenol resin adhesives has been attempted by two methods, 'kneading method' and 'solvolysis method,' and their adhesion strength has been studied. Adhesion strength of these adhesives was enhanced when poorly substituted CM wood and appropriate amounts of formaldehyde were used in the resin preparation. A crosslinking agent for carboxymethyl cellulose, that is, polymeric MDI, was also added just before application. The water-proof adhesion strength was higher than the JIS specification for phenol resin adhesives for this modification.