In recent decades, the basic technology of pressure-sensitive adhesive (PSA) acrylics has developed into a sophisticated science. The main properties of acrylic PSAs such as tack, peel adhesion, and shear strength are determined to a large extent by the kind and quantity of crosslinking agents added to the synthesized PSAs. In order to improve their adhesive (tack, peel adhesion) and cohesive (shear strength) properties, a wide range of amino resin thermal crosslinkers are tested. An acrylic PSA based on 2-ethylhexylacrylate, n-butyl acrylate, and acrylic acid was synthesized by performing a radical polymerization in ethyl acetate. After the addition of amino resins to the acrylic PSA and carrying out thermally initiated crosslinking processes to prepare one-sided self-adhesive tapes, their properties were assessed. •The type and amount of crosslinking agent has a significant impact on the properties of the pressure-sensitive adhesives.•Selected amino resins were evaluated as thermal reactive crosslinking agents for acrylic pressure-sensitive adhesives.•A wide range of amino resins was tested from the group of derivatives of melamine, benzoguanamine, glycoluril and urea.•Samples of crosslinked PSAs were evaluated to determine their properties such as tack, peel adhesion and shear strength.•Optimal balance between mentioned properties has been achieved for one benzoguanamine resin and for two melamine resins.