Patent ID: 8227563
Filing Date: 2012-07-24
Classification: C08F

Abstract:
1. A process for the preparation of 1-butene homopolymers or 1-butene/alpha olefin copolymers containing 0.1 to 20% by mol of alpha olefin, wherein the alpha olefins are selected from ethylene, propylene or alpha olefins of formula CH 2 ═CHZ wherein Z is a C 3 -C 20 alkyl radical, the process comprising contacting 1-butene and optionally at least one alpha olefin under polymerization conditions, in the presence of a catalyst system comprising: (a) a solid component comprising a Ti compound and an internal electron-donor compound supported on MgCl (b) an alkylaluminum cocatalyst; and (c) a compound of formula (I) as external donor wherein: R