Condensation products of orange mesocarp extract (flavonoid‐glycosides) and formaldehyde were modified with phenol, cashewnut shell liquid and resorcinol respectively. The copolymer resins formed were used in the formulation of wood adhesives. The glued veneers were evaluated for their shear strength and percentage wood failure assessed. The results showed that the adhesives cured to give gluelines of considerable strength and durability.