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Metallocene Catalyzed Polymers. Materials, Properties, Processing & Markets

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GC analysis of the reaction crude indicated that 96% of 2-methylindene was formed (NMP was used as an internal standard). p. 7 g, 76%). 10 (s, 3H). 5 M solution ofn-butyllithium (11 mmol). After addition, the reaction was allowed to warm to room temperature and stirred an additional 4 hours. The solvents were then removed in vacuo and the remaining solids were washed with pentane. 27 g, 5 mmol) was added as a dry powder to the above product, and a slurry was made in pentane. THF was added (1 mL) to facilitate the reaction, which was allowed to proceed at room temperature overnight with stirring.

Mark, R. Mottweiles, 1. H. Sum, and H. 1. Vollmes, Angew. Chern. Int. Ed. , 15, 630 (1976). , Angew. Chern. Int. Ed. , 24, 507 (1985). a. S. 4 892 851. b. S. 5334677. c. J. , JACS, 110, 6255 (1988). a. J. A. Ewen, JACS, 106, 6355 (1984). b. J. , Makromol. Chern. Macromol. , 48/49, 253 (1991). c. P. App!. 0284708. P. Corradini et ai, Macromolecules, 24,1784 (1991). J. , Proc. Int'I Symposium on Recent Developments in Olefin Polymerization Catalysts, Tokyo, 56, 439 (1989). S. , Catalytic Olefin Polymerization, Vol.

1 68 74 80 86 92 Year Figure i. Total woridwide m~lPOL capacity. [ r~ •I 100% Ethylene O%Propyiene Polypropylene unDO Im~Pol~py~ <-;:- j SOISO Polymer Composition Figure 2. The versatility of the gas-phase process. Catalysis in gas phase reactions for the production of olefin polymers is well knmvn in the polyolefm industry. 2 Developments in the UNIPOL® Process for polyethylene, EPRIEPDM, and polypropylene continue to demonstrate the broad versatility ofthe process (Figure 2). The emergence of metaliocene catalysis in many laboratories around the world in the last decade has added yet another significant catalytic tool for manipulating and controlling the molecular framework of polyolefin polymers.

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