Patent ID: 7166683
Filing Date: 2007-01-23
Classification: C08F

Abstract:
1. A process for polyrnerizing 1-butene comprising contacting under polymerization conditions (i) 1-butene, optionally from 0 to 30% by mole of ethylene, propylene or an alpha olef in of formula CH 2 ═CHT wherein T is a C 3 –C 10 alkyl group, and (ii) a catalyst system obtained by contacting: (A) a metallocene compound comprising formula (II): wherein R13 is a linear or branched C R R T wherein when T when T A A x, equal to or different from each other, is hydrogen, a halogen, R, OR, OR′O, OSO R is a linear or branched, saturated or unsaturated C R′ is a C L is a divalent bridging group selected from the group consisting of CR R M is a transition metal selected from those belonging to group 3, 4, or a lanthanide or actinide group in the Periodic Table of Elements (new IUPAC version); p is 1 or 2 and is equal to an oxidation state of M minus 2; R (B) an alumoxane and/or a compound that forms an alkyl metallocene cation thereby forming a polymerized product, the polymerized product comprising: