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
Staudinger, H., and Breusch, F., Ber., 62, 442 (1929).
Hershberger, A. B., et al., Ind. Eng. Chem., 37, 1073 (1945).
Whitmore, F. C., Ind. Eng. Chem., 26, 94 (1934).
Price, C. C., N.Y. Acad. Sci., 44, 351 (1943).
Polanyi, M., Chem. Soc. Symposium, see Nature, 158, 223 (1946).
Kirkwood, J. G., J. Chem. Phys., 2, 351 (1934).
Glasstone, Laidler and Eyring, "Theory of Rate Processes", 419 et seq. (McGraw-Hill, 1941).
Mayo, F. R., J. Amer. Chem. Soc., 65, 2324 (1943).
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PEPPER, D. Friedel–Crafts Polymerizations. Nature 158, 789–790 (1946). https://doi.org/10.1038/158789b0
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DOI: https://doi.org/10.1038/158789b0
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