Abstract
Gel-type poly(styrene-co-divinylbenzene) beads (PS bead) were used as a carrier to encapsulate metallocene catalysts through a simple swelling-shrinking procedure. The catalytic species were homogeneously distributed in the PS bead particle. The catalyst exhibited high and stable ethylene polymerization and ethylene/1-hexene copolymerization activity affording uniform spherical polymer particles (1 mm). Polymerization rate profiles exhibited slow initiation and stable increase in polymerization activity with time.
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