Highly active ethylene/hydroxyl comonomers copolymerization using metallocene catalysts |
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| Authors: | M T Expósito J F Vega J Ramos J Osío‐Barcina A García‐Martínez C Martín J Martínez‐Salazar |
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| Affiliation: | 1. Departamento de Física Macromolecular, Instituto de Estructura de la Materia. CSIC, Serrano 113 bis, 28006 Madrid, Spain;2. Departamento de Química Orgánica I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain;3. Centro Tecnológico Repsol‐YPF, Carretera A‐5, km 18, Móstoles, Madrid, Spain |
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| Abstract: | Ethylene was copolymerized with 10‐undecen‐1‐ol and 5‐hexen‐1‐ol using stereorigid rac‐ethylene(Ind)2ZrCl2], rac‐ethylene(H4Ind)2ZrCl2], and the new catalyst systems rac‐norbornane(Ind)2TiCl2] and mesonorbornane(Ind)2TiCl2], activated with methylaluminoxane. The characterization of the copolymers by 13C NMR spectroscopy revealed that the polymerization products were copolymers and that the conversion of the polar comonomer was strongly favored in the case of the zirconocene precursors. Very high catalytic activity values, nearly independent on the amount of comonomer in the feed, and comonomer incorporations up to 25.4%‐weight have been found for 10‐undencen‐1‐ol comonomer. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008 |
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| Keywords: | metallocene catalyst copolymerization functionalization of polymers |
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