Activity and stereospecificity of cobalt-methylaluminoxane catalyst in butadiene polymerization View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2006-07

AUTHORS

N. N. Glebova, I. F. Gavrilenko, O. V. Chausova, O. K. Sharaev, V. A. Yakovlev

ABSTRACT

Butadiene polymerization in aliphatic and aromatic solvents mediated by a preliminarily formed catalyst consisting of cobalt 2-ethylhexanoate, methylaluminoxane, and diene was studied. It was shown that the catalyst was active at a molar ratio of methylaluminoxane: cobalt: diene = 75−200:1:20, yielding high-molecular-mass polymers (intrinsic viscosity, 1.8–2.7 dl/g) containing at least 98% cis-1,4-units. Preliminary formation of the catalyst was found to increase its activity in butadiene polymerization at a low Al:Co ratio. In this case, the catalyst retains its high stereospecificity (the amount of cis-1,4-units in the polymer reaches 98% and more) independently of the nature of the solvent used for polymerization. More... »

PAGES

274-275

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s0965544106040086

DOI

http://dx.doi.org/10.1134/s0965544106040086

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1033160555


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