The viscosities of various poly(vinyl acetate) (PVAc)-solvent mixtures (PVAc-toluene, PVAc-benzene, and PVAc-cyclohexanone) were measured at different temperatures with a Haake viscometer. The required molecular weight of a commercial-grade PVAc sample was measured with an Ubbelohde viscometer. The measured viscosities were correlated with a previously proposed viscosity model, and the model parameters were calculated. The results indicated the applicability of the model to the viscosity calculations of PVAc-solvent mixtures. (c) 2005 Wiley Periodicals, Inc.