Taking into account the possible advantages of the introduction of thioether bonds into the polymerization product, the polymerization of formulations based on 1,4-butanediol diacrylate or 1,6-hexanediol diacrylate and containing additives of various linear sulfides or cyclic dithioacetals was investigated to discover the influence of sulfides on the polymerization rate and yield. A commercial photofragmentating initiator was applied. It was found that the observed effect is the result of accelerating and retarding processes occurring simultaneously and their relationship and the extent of the effect depended on the reaction conditions and the sulfide structure. A schematic representation of the most important reactions is given.