Bis(arylimino)pyridyl cobalt catalysts for copolymerization of buta-1,3-diene with ethene

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43918211" target="_blank" >RIV/60461373:22310/19:43918211 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.polymer.2019.05.025" target="_blank" >https://doi.org/10.1016/j.polymer.2019.05.025</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.polymer.2019.05.025" target="_blank" >10.1016/j.polymer.2019.05.025</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Bis(arylimino)pyridyl cobalt catalysts for copolymerization of buta-1,3-diene with ethene

Popis výsledku v původním jazyce

A series of cobalt (II), iron (II) and iron (III) bis(arylimino)pyridyl complexes [2,6-(ArN = CMe)(2) C5H3N]CoCl2, where Ar is 2,4,6-Me(3)C(6)H(2; )2,6-Me2C6H3; 2,6-iPr(2)C(6)H(3) and 2-tBuC(6)H(4),; [2,6-(ArN= CCl)(2)C5H3N]CoCl2, where Ar is 2,4,6-Me3C6H2 and 2,6-iPr(2)C(6)H(3), and [2,6-(ArN= CMe)(2)C5H3N]FeCl2, where Ar is 2,4,6-Me3C6H2; [2,6-ArN = CMe)(2)C5H3N]FeCl (3), where Ar is 2,4,6-Me3C6H2 was prepared and, after activation with an alkylaluminium cocatalysts (Al2Et3Cl3 or methylaluminoxane), investigated for ethene and butadiene homopolymerization and their copolymerization. Only the cobalt complexes resulted in the effective creation of butadiene-ethene copolymers. According to the cocatalyst preference, two sets of butadiene-ethene copolymers were prepared. Ethene rich (60-85%) crystalline copolymers were obtained using methylaluminoxane and butadiene rich (70-90%) amorphous copolymers using Al2Et3Cl3. Mechanism of cobalt complexes activation was investigated in-situ by UV-VIS spectroscopy. To our best knowledge, this is the first time that bis(arylimino)pyridyl cobalt complexes have been shown to copolymerize butadiene with ethene. The copolymerization activated by Al2Et3Cl3 is cis-1,4-selective and provides elastomeric material.

Název v anglickém jazyce

Bis(arylimino)pyridyl cobalt catalysts for copolymerization of buta-1,3-diene with ethene

Popis výsledku anglicky

A series of cobalt (II), iron (II) and iron (III) bis(arylimino)pyridyl complexes [2,6-(ArN = CMe)(2) C5H3N]CoCl2, where Ar is 2,4,6-Me(3)C(6)H(2; )2,6-Me2C6H3; 2,6-iPr(2)C(6)H(3) and 2-tBuC(6)H(4),; [2,6-(ArN= CCl)(2)C5H3N]CoCl2, where Ar is 2,4,6-Me3C6H2 and 2,6-iPr(2)C(6)H(3), and [2,6-(ArN= CMe)(2)C5H3N]FeCl2, where Ar is 2,4,6-Me3C6H2; [2,6-ArN = CMe)(2)C5H3N]FeCl (3), where Ar is 2,4,6-Me3C6H2 was prepared and, after activation with an alkylaluminium cocatalysts (Al2Et3Cl3 or methylaluminoxane), investigated for ethene and butadiene homopolymerization and their copolymerization. Only the cobalt complexes resulted in the effective creation of butadiene-ethene copolymers. According to the cocatalyst preference, two sets of butadiene-ethene copolymers were prepared. Ethene rich (60-85%) crystalline copolymers were obtained using methylaluminoxane and butadiene rich (70-90%) amorphous copolymers using Al2Et3Cl3. Mechanism of cobalt complexes activation was investigated in-situ by UV-VIS spectroscopy. To our best knowledge, this is the first time that bis(arylimino)pyridyl cobalt complexes have been shown to copolymerize butadiene with ethene. The copolymerization activated by Al2Et3Cl3 is cis-1,4-selective and provides elastomeric material.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

<a href="/cs/project/GA18-22059S" target="_blank" >GA18-22059S: MODIFIKACE VĚTVENÝCH POLYOLEFINŮ POLÁRNÍMI SKUPINAMI</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Polymer

ISSN

0032-3861

e-ISSN

—

Svazek periodika

175

Číslo periodika v rámci svazku

10.5.2019

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

195-205

Kód UT WoS článku

000471252600024

EID výsledku v databázi Scopus

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