Isoprene Polymerization in the Presence of Phosphate Catalytic Systems Based on a Mixture of Neodymium and Gadolinium Salts
- Autores: Novikova E.1, Levkovskaya E.1, Senderskaya E.1, Chernyavskiy G.1, Belorukova T.1
-
Afiliações:
- Lebedev Research Institute of Synthetic Rubber
- Edição: Volume 96, Nº 2 (2023)
- Páginas: 177-183
- Seção: 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
Citar
Resumo
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
Sobre autores
E. Novikova
Lebedev Research Institute of Synthetic Rubber
Email: acjournal.nauka.nw@yandex.ru
198035, St. Petersburg, Russia
E. Levkovskaya
Lebedev Research Institute of Synthetic Rubber
Email: acjournal.nauka.nw@yandex.ru
198035, St. Petersburg, Russia
E. Senderskaya
Lebedev Research Institute of Synthetic Rubber
Email: acjournal.nauka.nw@yandex.ru
198035, St. Petersburg, Russia
G. Chernyavskiy
Lebedev Research Institute of Synthetic Rubber
Email: acjournal.nauka.nw@yandex.ru
198035, St. Petersburg, Russia
T. Belorukova
Lebedev Research Institute of Synthetic Rubber
Autor responsável pela correspondência
Email: acjournal.nauka.nw@yandex.ru
198035, St. Petersburg, Russia
Bibliografia
- Бубнова С. В., Бодрова В. С., Дьячкова Е. С., Дроздов Б. Т., Васильев В. А. Полимеризация изопрена с катализаторами на основе 2-этилгексилфосфата неодима // Каучук и pезина. 2014. № 1. С. 8-11.
- Левковская Е. И., Бубнова С. В., Бодрова В. С., Дроздов Б. Т., Васильев В. А. Полимеризация изопрена в присутствии каталитических систем на основе соединений гадолиния // Каучук и pезина. 2014. № 1. С. 12.
- Пат. РФ 2352585 (опубл. 2009). Способ получения диалкилфосфатов редкоземельных элементов - компонентов катализатора (со)полимеризации сопряженных диенов.
- Пат. РФ 2540083 (опубл. 2015). Способ получения раствора диалкилфосфата гадолиния - компонента катализатора (со)полимеризации сопряженных диенов.
- Пат. РФ 2660414 (опубл. 2018). Способ получения катализатора полимеризации изопрена.
- Jenson M. P., Chiarizia R., Urban V. Investigation of the aggregation of the neodymium complexes of dialkylphosphoric, -oxothiophosphinic and -dithiophosphinic acids in toluene // Solvent Extraction Ion Exchange. 2001. V. 19. N 5. P. 865-884.
- Каранкевич Е. Г., Куваева З. И., Микулич А. В. Экстракция L-пролина ди(2-этилгексил)фосфорной кислотой // Весцi НАН Беларусi. 2009. № 4. С. 45-49.
- Sanchez J. M., Hidalgo M., Salvado V., Valiente Et. M. Extraction of neodymium(III) at trace level with di(2-ethyl-hexyl)phosphoric acid in hexane // Solvent Extraction Ion Exchange. 1999. V. 17. N 3. P. 455-474.