Email this article Isoprene Polymerization in the Presence of Phosphate Catalytic Systems Based on a Mixture of Neodymium and Gadolinium Salts
- Authors: Novikova E.S.1, Levkovskaya E.I.1, Senderskaya E.E.1, Chernyavskiy G.G.1, Belorukova T.S.1
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Affiliations:
- Lebedev Research Institute of Synthetic Rubber
- Issue: No 2 (2023)
- Pages: 177-183
- Section: Articles
- URL: https://journals.rcsi.science/0044-4618/article/view/247276
- DOI: https://doi.org/10.31857/S0044461823020068
- EDN: https://elibrary.ru/OUKYNU
- ID: 247276
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Abstract
Coordination polymerization of isoprene in the presence of Ziegler–Natta catalytic systems based on a mixture of neodymium and gadolinium bis(2-ethylhexyl) phosphates at the neodymium/gadolinium molar ratios of 25/75, 50/50, and 75/25 was studied. These catalytic systems exhibit high catalytic activity in isoprene polymerization, equal to that of the catalytic system based on neodymium bis(2-ethylhexyl) phosphate. The influence of the Nd/Gd ratio on the molecular-mass characteristics and microstructure of the polymers obtained was examined. The kinetic parameters of the isoprene polymerization using catalytic systems based on a mixture of neodymium and gadolinium salts were determined. The possibility of using such systems in the synthesis of stereoregular cis-1,4-polyisoprene with the optimum level of molecular masses was demonstrated
About the authors
E. S. Novikova
Lebedev Research Institute of Synthetic Rubber
Email: acjournal.nauka.nw@yandex.ru
198035, St. Petersburg, Russia
E. I. Levkovskaya
Lebedev Research Institute of Synthetic Rubber
Email: acjournal.nauka.nw@yandex.ru
198035, St. Petersburg, Russia
E. E. Senderskaya
Lebedev Research Institute of Synthetic Rubber
Email: acjournal.nauka.nw@yandex.ru
198035, St. Petersburg, Russia
G. G. Chernyavskiy
Lebedev Research Institute of Synthetic Rubber
Email: acjournal.nauka.nw@yandex.ru
198035, St. Petersburg, Russia
T. S. Belorukova
Lebedev Research Institute of Synthetic Rubber
Author for correspondence.
Email: acjournal.nauka.nw@yandex.ru
198035, St. Petersburg, Russia
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