Abstract: Nanometer nickel was used as catalyst for disproportion of resin acid for the first time. In the presence of solvent, disproportion of resin acid using different catalyst was investigated, and the compositions of the products,especially acid parts,were analyzed.DEAE-Sephadax ion-exchange chromatography was used for separation of resin acid and neutral part in disproportionated rosin. During the reaction,the chemical compositions of disproportionated rosin have been traced.

Key words: nanometer nickel, disproportionated rosin, resin acid composition