Abstract
Synthesis of viscosity additives based on polystyrene and 1-hexene is described. The first step consists in 1-hexene oligomerization in the presence of aluminum chloride. Then, a solution of polystyrene in chlorobenzene is added into the system in which a carbocation has been formed. In this system, polystyrene undergoes oligoalkylation with 1-hexene oligomers to yield a product soluble in petroleum oils. The synthesized oligoalkylpolystyrene was tested as heat-resistant viscosity additive to petroleum oils.
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