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Synthesis of 4‐phenylbutyl‐branched polyethylene from an ethylene‐styrene feed by a half‐titanocene catalyst
Author(s) -
Pellecchia Claudio,
Mazzeo Mina,
Gruter GertJan
Publication year - 1999
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/(sici)1521-3927(19990601)20:6<337::aid-marc337>3.0.co;2-f
Subject(s) - ethylene , styrene , catalysis , copolymer , polyethylene , polymer chemistry , polymerization , polymer , materials science , chemistry , organic chemistry
Copolymerization of ethylene and styrene with the catalytic system Cp*TiMe 3 ‐B(C 6 F 5 ) 3 under suitable conditions affords a new polymer having a polyethylenic backbone with 4‐phenyl‐1‐butyl branches as the main product. This unexpected result has been ascribed to the multi‐site nature of the catalytic system, containing a species able to co‐oligomerize ethylene and styrene to 6‐phenyl‐1‐hexene (which was actually identified in the polymerization mixture), and another species able to copolymerize the latter with ethylene.