Asymmetric metallocene catalysts [Elektronische Ressource] : design of ultrahigh molecular weight polypropylene plastomers / vorgelegt von Cecilia Cobzaru

ASYMMETRIC METALLOCENE CATALYSTS DESIGN OF ULTRAHIGH MOLECULAR WEIGHT POLYPROPYLENE PLASTOMERS Dissertation zur Erlangung des Doktorgrades Dr. rer. nat. der Fakultät für Naturwissenschaften der Universität Ulm vorgelegt von CECILIA COBZARU aus GHERAESTI / RUMÄNIEN 2006 Amtierender Dekan: Prof. Dr. K.-D. Spindler 1. Gutachter: Prof. Dr. B. Rieger 2. Gutachter: Tag der Promotion: Table of Contents Chapter 1 Introduction 1.1 Benefits of plastics 1 1.2 Major markets of plastics and thermoplastics 3 1.3 Polypropylene products 5 Chapter 2 Tailor-made polyolefine materials via metallocene catalysts 2.1 Single site catalysts 11 2.2 Activators of the catalyst precursors 13 2.3 Stability of the active species 14 2.4 C - symmetric metallocenes. Strategies of catalyst development 15 12.5 Polypropylene microstructure and material properties 17 2.6 Content and significance of the study 18 Chapter 3 Synthesis of plastomeric polypropylenes 3.1 New ligands and complexes toward olefines homo- and copolymers 20 3.2 Ligand and complex synthesis 25 3.2.1 General procedure 25 3.2.2 Synthesis of indene derivatives 26 3.2.3 Ligand synthesis 27 3.2.4 Synthesis of the bridged complexes 32 3.2.5 Synthesis of the unbridged complexes 33 3.2.