The paper presents the results of studies in the dielectric properties of (DIPAC)1–x/(PbTiO3)x composites with the x volume fraction of lead titanate in composite from 0.10 to 0.40. It has been shown that the addition of lead titanate to diisopropylammonium chloride leads to an increase in the dielectric constant and the appearance of additional phase transitions during heating and cooling. The appearance of a new phase transition was explained in the framework of the Landau – Ginzburg theory, taking into account the dipole-dipole interaction between the components.