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Effect of (s)-(+)-ethyl-2-phenylbutanoate and poly(ethylene terephthalate) on the polymerization of propylene and 3-methyl-1-pentene over TiCl3-AlET3

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Summary

(s)-(+)-Ethyl-2-phenylbutanoate was synthesized and polymerizations of propylene and racemic 3-methyl-1-pentene were conducted over TiCl3-AlEt3 combined with the compound. The addition of the compound caused a significant increase in the isotacticity of polypropylene as well as a substantial decrease in the activity. However, stereoelective polymerization of racemic 3-methyl-1-pentene didn't take place at all. Propylene polymerization was also carried out over TiCl3-AlEt3 by using poly(ethylene terephthalate) in place of the compound. The results obtained have led to the conclusion that these additives act mainly as reagents to reduce the concentration of AlEt3 by the formation of the complexes between AlEt3 and these additives.

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Soga, K., Terano, M., Ikeda, S. et al. Effect of (s)-(+)-ethyl-2-phenylbutanoate and poly(ethylene terephthalate) on the polymerization of propylene and 3-methyl-1-pentene over TiCl3-AlET3 . Polymer Bulletin 3, 179–184 (1980). https://doi.org/10.1007/BF00254170

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Keywords

  • Polymerization
  • Ethylene
  • Propylene
  • Polypropylene
  • Material Processing