In this work, metallocenes for the polymerization of propene were investigated with respect to their application at industrial relevant polymerization temperatures. This revealed different chain termination mechanisms for known C
1-symmetric zirconocenes and hafnocenes. As a consequence, polypropylene (PP) for various applications can be formed by choice of the metal and the polymerization temperature. Furthermore, new C
2-symmetric metallocenes for the production of highly isotactic PP were developed. At present these can generate the most stereo- and regioregular iPP with the highest melting point. The answer to the question of the processability of this new polypropylenes will decide on their prospective applications.
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In this work, metallocenes for the polymerization of propene were investigated with respect to their application at industrial relevant polymerization temperatures. This revealed different chain termination mechanisms for known C
1-symmetric zirconocenes and hafnocenes. As a consequence, polypropylene (PP) for various applications can be formed by choice of the metal and the polymerization temperature. Furthermore, new C
2-symmetric metallocenes for the production of highly isotactic PP were devel...
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