МОДЕЛЮВАННЯ ОДЕРЖАННЯ НАФТОПОЛІМЕРНИХ СМОЛ ІЗ ФРАКЦІЇ C9 СУСПЕНЗІЙНОЮ ОЛІГОМЕРИЗАЦІЄЮ МЕТОДОМ ПОВЕРХНІ ВІДГУКУ

This study aims to optimize the suspension oligomerization of the C9 fraction of liquid pyrolysis by-products for the production of light petroleum resins with predictable quality parameters. Response surface methodology was applied to construct quadratic regression models and to evaluate the influence of reaction temperature (313–353 K), reaction time (30–240 min), initiator concentration (0.023–0.102 mol·L-1), C9 fraction content in the reaction mixture (25–50 vol.%), and mixing intensity expressed by the Reynolds number (2.29×103–1.35×104) on resin yield and physicochemical properties. A pronounced inverse correlation between resin yield and bromine number (r = −0.90) was established, indicating progressive consumption of reactive double bonds as the oligomerization depth increases. Molecular weight shows moderate sensitivity to technological parameters, whereas softening temperature depends primarily on the molecular structure of the resin. Multi-response optimization approach made it possible to determine rational operating conditions providing approximately 28 % resin yield with acceptable color, molecular weight, and bromine number values. The obtained results establish quantitative relationships between technological and hydrodynamic parameters and the properties of petroleum resins, providing a scientific basis for the technological regulation of suspension oligomerization processes.