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Metallocenes future applications

Edelmann FT (1996) Rare Earth Complexes with Heteroallylic Ligands. 179 113 -148 Edelmann FT (1996) Lanthanide Metallocenes in Homogeneous Catalysis. 179 247-276 Effenhauser CS (1998) Integrated Chip-Based Microcolumn Separation Systems. 194 51 - 82 Ehrfeld W, Hessel V, Lehr H (1998) Microreactors for Chemical Synthesis and Biotechnology -Current Developments and Future Applications. 194 233 - 252 Ekhart CW, see de Raadt A (1997) 187 157-186... [Pg.255]

Wilkinson and Lamb 1999). The use of DEHP in domestically produced teethers and rattles has been discontinued (Consumer Product Safety Commission 1999d). DEHP is also no longer used as a plasticizer in plastic food wrap products (Mannsville Chemical Products Corporation 1999). In addition, some applications, like automobile upholstery, might switch from DEHP to linear phthalates because of their superior performance and low toxicity, which will put further downward pressure on DEHP use (Mannsville Chemical Products Corporation 1999). Finally, in the future, polyolefin metallocene plastomers might replace flexible applications for PVC altogether because they provide flexibility without the need for plasticizers. [Pg.194]

While metallocenes are often thought to be entirely in the domain of transition metal chemistry, we have shown that main group chemists have a legitimate claim as well. The lack of d orbital participation in the metal-ligand bonding may result in less thermodynamic stability but does not preclude the possibility of novel structural motifs or future real-world applications. Computational... [Pg.419]

The versatility of polymerization resides not only in the different types of polymerization reactions and types of reactants that can be polymerized, but also in variations allowed by step-growth synthesis, copolymerization, and stereospecific polymerization. Chain polymerization is the most important kind of copolymerization process and is considered separately in Chapter 7, while Chapter 9 describes the stereochemistry of polymerization with emphasis on the synthesis of polymers with stereoregular structures by the appropriate choice of polymerization conditions, including the more recent metallocene-based Ziegler-Natta systems. Synthetic approaches to starburst and hyperbranched polymers which promise to open up new applications in the future are considered in an earlier chapter dealing with step-growth polymerization. [Pg.859]

The highest global consumption of any plastic coupled with the many distinct types of commercially available polyethylenes are testament to the rich history of major innovations in products, processes and breadth of applications of polyethylene. This chapter will give a historical perspective of these innovations in polyethylene including a breadth of product applications of polyethylene and the impact of metallocene polyethylenes commercialized in last 15 years. A very recent innovation of olefin block copolymers by The Dow Chemical Company will be described and some remarks will be made on future product innovations and trends. [Pg.73]


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