A small variation in the substituent R' on the metallocene catalyst employed in the copolymerization of ethene and propene leads to a highly alternating (81-83%) structure (1) rather than a statistical copolymer. Such copolymers were until recently only accessible by hydrogenation of polyisoprene or 1,4-poly(pentadiene).
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http://dx.doi.org/10.1002/(SICI)1521-3773(19980420)37:7<922::AID-ANIE922>3.0.CO;2-G | DOI Listing |
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