Abstract <p>The influence of various resins on the adhesive strength of hot-curing adhesive chloroprene rubber compositions is studied. It was found that the highest adhesive properties characterize a sample in which pentaerythritol rosin ester was used as a tackiness modifier. The bond strength in this sample is 6.64 kN m^–1, which is 30% higher than for that in which pine rosin was used as a tackiness modifier. It is shown that there is an increase in bond strength from 3 to 60% in all samples after aging in air. It was found that the highest increase in bond strength is in the samples with dispraktol KS-BP and pentaerythritol ester of rosin and is 60&#xa0;and 30%, respectively. It can be concluded that hot-curing adhesive chloroprene rubber composition in which pentaerythritol rosin ester is used as a tackiness modifier possesses the optimal set of operational characteristics.</p>