About Book
Even though Ziegler catalysts have been known for almost half a century, rare earth metals (Ln), particularly neodymium (Nd)-based Ziegler catalyst systems, only came into the focus of industrial and academic research well after the large scale application of titanium, cobalt and nickel catalyst systems. As directcon sequence of the later ecognition of the technological potential of rare earth metal Ziegler catalysts, these systems have at tracted much attention. Considerable progress has been made in this ?as a result of intensive work performed during the last few years. Worth mentioning is the structural identification of a variety of Ln/Al heterbio metallic complexes and the role of alkyl aluminum co catalysts in molar mass control. Furthermore, a deeper understanding of the polymerization mechanism, such as the living character of neodymium-catalyzed diene polymerization associated with the reversible transfer of living polymer chains between and Al, was revealed quite. In spite of the vast number of patents and publications mainly issued during the last decade, acomprehensive review that covers the scientice as well as the patent literature has been missing until now. In this volume we try to review the available literature by two independent approaches to Nd and Ln-catalyzed diene polymerizations.
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