Cationic Polymerization of β-Pinene Using Keggin Phosphotungstates as Catalysts

Polymerization of β-pinene was investigated in the presence of various Keggin phosphotungstates. The experiments show that cetyltrimethylammonium phosphotungstate with molar ratio of cetyltrimethylammonium bromide to phosphotungstatic acid equal to 0.5 indicate efficient catalytic performance for the polymerization of β-pinene. The catalyst was easily removed from reaction mixture by filtration. Therefore, a clean and environmental friendly strategy for synthesis of terpene resin is developed.

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