Letter | Published:

Friedel–Crafts Polymerizations

Nature volume 158, pages 789790 (30 November 1946) | Download Citation

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Abstract

α-METHYLSTYRENE has been polymerized at 25° C., using stannic chloride as catalyst, both in solution and in undiluted monomer, giving polymers of molecular weight up to approximately 11,000. Staudinger1, using this catalyst, obtained only a very low degree of polymerization (up to octamer), presumably due to the high temperatures reached in his experiments. The molecular weight of the polymer can be increased three-fold by polymerizing at 0° C., in agreement with the aluminium chloride-catalysed reaction2.

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References

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Affiliations

  1. Trinity College, Dublin. Oct. 28.

    • D. C. PEPPER

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DOI

https://doi.org/10.1038/158789b0

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