Dicyclopentadienyl complexes of titanium,niobium, and tungsten in the controlled synthesis of poly(methyl methacrylate) |
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| Authors: | Grishin D. F. Semyonycheva L. L. Telegina E. V. Smirnov A. S. Nevodchikov V. I. |
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| Affiliation: | (1) Research Institute of Chemistry, N. I. Lobachevskii Nizhny Novgorod State University, 23/5 Prosp. Gagarina, 603950 Nizhny Novgorod, Russian Federation;(2) Close Corporation «Sinor», 47 ul. Akimova, 603152 Nizhny Novgorod, Russian Federation;(3) The Federal State Unitarian Enterprise, V. A. Kargin Research Institute of Chemistry and Technology of Polymers with Pilot Plant, 606000 Dzerzhinsk, Russian Federation |
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| Abstract: | Organometallic compounds Cp2TiCl2, (EtC5H4)2NbCl2, and (PriC5H4)2WCl2 were assessed as additives that control polymer chain growth in the polymerization of methyl methacrylate. In the presence of compounds mentioned in amounts comparable with that of the initiator, a uniform process with no gel-effect occured and respective linear increase in the molecular weight of the polymer up to high degrees of the monomer conversion was observed. |
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| Keywords: | controlled polymerization methyl methacrylate dicyclopentadienyl complexes of metals mechanism of reversible inhibition (Stable Free Radical Polymerization (SFRP)) mechanism of change of metal valence (Atom Transfer Radical Polymerization (ATRP)) |
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