Zy. Liu et al., Preparation of LLDPE with dual-functional catalytic system Ti(OBu-n)(4)/AlEt3-[Me(2)SiN(t)BuInd]ZrCl2/MAO, CHEM J CH U, 22(7), 2001, pp. 1271-1273
This paper reports a new kind catalytic system to produce linear low densit
y polyethylene (LLDPE) from ethylene alone in a single reactor by combining
the ability of Ti(OBu-n)(4)/AlEt3 to produce 1-butene with the ability of
[Me(2)SiN(t)BuInd]ZrCl2/MAO to copolymerize ethylene with 1-butene. It was
found that the dual-functional catalytic system has high activity and get t
he good polymer with density ranging from 0.91-0.95 g/cm(3) in ethylene pol
ymerization.