Summary
Copolymerization of tetrahydrofuran and propylene oxide catalyzed by modified H2SO4.SO3 system has been studied. Sodium perchloride was used to replace perchloric acid as co-catalyst. The copolymerization rate was obviously accelerated when using the new H2SO4.SO3−NAClO4 catalyst system. The reaction became less sensitive to the moisture.
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Feng, X., Han, P., Wu, J. et al. Copolymerization of tetrahydrofuran and propylene oxide. Polymer Bulletin 24, 507–512 (1990). https://doi.org/10.1007/BF00395572
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DOI: https://doi.org/10.1007/BF00395572