Mutual diffusion coefficients for acrylic adhesive-acetone methyl ethyl ketone and n-propyl acetate systems are determined by analysis of desorption curves, which were obtained from sorption and desorption of solvents for acrylic adhesive film. Measurements of mutual diffusion coefficients were made at 313.15 K and 323.15 K for acrylic adhesive-acetone and methyl ethyl ketone systems, and also at 323.15 K and 333.15 K for acrylic adhesive-n-propyl acetate system For all systems, mutual diffusion coefficients increase gradually as solvent concentration increases. Mutual diffusion coefficients for five solvents (acetone, methyl ethyl ketone, methyl acetate, ethyl acetate, n-propyl acetate) in acrylic adhesive are correlated by the Vrentas-Duda free volume theory, which was modified by Iwai et al. Agreement between the experimental and correlated mutual diffusion coefficients is good. The six parameters required in the prediction can be correlated with molecular. weight, cohesive energy and molar volume at the normal boiling point of the solvent.