The C7-C9 fractions with a boiling point of 100 to 200 °С consists of 95-98% of aromatic hydrocarbons - toluene, xylols, alkylbenzenes and vinylaromatic hydrocarbons (styrene, α-methylstyrene, vinyltoluene), indene and dicyclopentadiene (DCPD). This fraction can be used to obtain light petroleum polymer resins (PPR) by known technologies - thermal, initiated or catalytic polymerization.
PPR are used in various industries: paint and varnish, pulp and paper, construction and road-building, rubber and tire, woodworking and furniture. The valuable properties of PPR are their ability to film formation, resistance to acids and alkalis, high water resistance.
Non-polymerization toluene, xylenes, alkyl benzenes are easily separated from the polymerization products and can be used as solvents or high-octane fuel additives.