Metallocene catalyst system used in (co)polyolefin production

摘要

Catalyst system contains: (a) substituted metallocene(s) of the bridged bis(4-phenylindenyl) type; (b) Lewis base(s); (c) a support; (d) organoboron-aluminum compound(s), bound covalently to the support; and optionally (e) an organometallic compound. Catalyst system contains: (A) substituted metallocene(s) of the bridged bis(4-phenylindenyl) type of formula (I), in a ratio of rac-isomer to meso-isomer of 1:10 to 2:1; (B) Lewis base(s) of formula (II); (C) a support; (D) organoboron-aluminum compound(s) of formula (III), bound covalently to the support; and optionally (E) an organometallic compound of formula (IV): A = a bridge; M<3> = a main group V element; M<4> = a main group 3 element; i, j = 0, 1 or 2; M<5> = a main group I, II or III element. The full definitions are given in the DEFINITIONS (Full Definitions) Field.