Polyolefin production

摘要

Use of a metallocene catalyst component of general formula R''(CpRm)(Cp'R'n)MQ2 in the production of linear low density polyolefin, wherein Cp is a cyclopentadienyl moiety, Cp' is a substituted or unsubstituted fluorenyl ring; R'' is a structural bridge imparting stereorigidity to the component; each R is independently hydrogen or hydrocarbyl having 1 to 20 carbon atoms in which O≤m≤4; each R' is independently hydrocarbyl having 1 to 20 carbon atoms in which O≤n≤8; M is a Group IVB transition metal or vanadium; and each Q is hydrocarbyl having 1 to 20 carbon atoms or halogen; the metallocene having a centroid-M-centroid angle in the range 105 DEG to 125 DEG .