Polymerization of C9 Fraction from Ethylene Cracking Catalyzed by Al~(3+)-Loaded Styrenic Cation Exchange Resin

摘要

Studies on the chemical, copolymerization and hydrogenation modification of C9 petroleum resin are numerous, whereas those on polymerization process, particularly polymerization catalysts, are rare. The current study aimed to explore the catalyst performance of the Al~(3+) ion exchange resin catalyst in petroleum resin polymerization. A gel-type solid resin catalyst used for the polymerization of the ethylene cracking byproduct C9 (boiling range, 100-200 °C) was prepared by loading anhydrous AlCl3 onto strong acid styrene-type cation exchange resins. The obtained polymerizates were analyzed using an infrared spectrometer. The results showed that the Al~(3+)-loaded styrene-type cation exchange resin resulted in the absence of elution liquids produced from the reaction system, circumventing the process of catalyst removal. The softening point of the obtained petroleum resin product was higher than the softening point of petroleum resin directly catalyzed by anhydrous AlC13.