Densities and viscosities of binary mixtures of 1-butanol with methacrylic acid, benzyl methacrylate, and 2-hydroxyethyl methacrylate were measured at temperatures from 288.15 K to 318.15 K. A pycnometer and a Cannon-Fenske routine viscometer were used to determine density and kinematic viscosity, respectively. The excess molar volumes V E and viscosity deviations delta eta were calculated from the experimental data and were correlated by a Redlich-Kister-type polynomial. McAllister's three-body and four-body interaction models were used to correlate the kinematic viscosities. These model parameters were also treated to be temperature dependent.