The comonomer inducing selective β‐methyl elimination chain transfer: A new approach for end‐functionalizations of syndiotactic polypropylene‐based copolymers |
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Authors: | Wen‐Fu Lin Jing‐Cherng Tsai |
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Institution: | Department of Chemical Engineering, National Chung Cheng University, Chia‐Yi 62142, Taiwan |
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Abstract: | The end‐functionalization of syndiotactic polypropylene‐based copolymers can be accomplished by conducting propylene polymerization in the presence of norbornene using Me2C(Cp)(Flu)ZrCl2/MAO as the catalyst. The detailed structural analyses clearly reveal the occurrence of the β‐methyl elimination chain transfer reaction that leads to the generation of the ethenyl group end‐capped syndiotactic polypropylene‐based propylene–norbornene copolymer. Subsequently, the ethenyl group end‐capped copolymer can be used for the preparation of other end‐functionalized syndiotactic polypropylene‐based copolymers by conducting organic functional group transformation reactions. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 2167–2176, 2008 |
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Keywords: | metallocene catalysts syndiotactic stereospecific polymers |
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