Patent ID: 8110643

Claim:
A styrene ethylene copolymer having syndiotactic styrene blocks prepared by the copolymerization of ethylene and styrene in the presence of a catalyst system comprising a metallocene catalyst component characterized by the formula: (FluR″Cp)M(η 3 C 3 R′ 5 )(ether) n wherein Cp is a substituted or unsubstituted cyclopentadienyl group, Flu is a substituted or unsubstituted fluorenyl group, R″ is a structural bridge between Cp and Flu imparting stereorigidity to the component, M is a metal Group III of the Periodic Table, each R′ is the same or different and is hydrogen, a silyl group of a hydrocarbyl group having from 1 to 20 carbon atoms and n is 0, 1 or 2 said copolymer containing styrene in an amount within the range of 40-99% of styrene.