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Vinylarenetricarbonyl complexes of chromium as chain propagation regulators for polymerization of acrylic monomers

✍ Scribed by Dmitry F. Grishin; Ludmila L. Semyonycheva; Alexander N. Artemov; Ekaterina V. Telegina; Natalia B. Valetova; Ilya S. Illichev

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
124 KB
Volume
17
Category
Article
ISSN
0268-2605

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✦ Synopsis

Abstract

The polymerization of methyl methacrylate and butyl acrylate initiated by azo‐bis‐isobutyronitrile in the presence of metal‐containing monomers (p‐methylstyrene‐, stilbene‐ and α‐methylstyrene‐chromiumtricarbonyl) was studied. Kinetic parameters (i.e. the decrease in the autoacceleration during the polymerization of acrylic monomers, its shift towards a high conversion region in the presence of α‐methylstyrenechromiumtricarbonyl, a linear dependence of the molecular weight of a polymethyl methacrylate and the shift of molecular‐weight distribution curves to a high molecular weight region with conversion) demonstrate the influence of vinylarenetricarbonyl complexes of chromium on basic steps of polymerization. It is important to note that the above organometallic compounds enable the controlled synthesis of polymers under temperature conditions (50–70 °C) corresponding to those of the industrial polymer production. Copyright © 2003 John Wiley & Sons, Ltd.

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