Catalyst system for polymerisation of alkene(s) - contg. metallocene, oligomeric aluminium oxide cpd. and organic aluminium cpd. leads to prod. with lower levels of aluminium residue

摘要

Catalyst systems (A) contain as active components, metallocene complexes of Gp. IV and Gp. V metals, an oligomeric aluminium oxide cpd. and an organic aluminium cpd. of formula (IV). R18, R19 = 1-15C alkyl, R20 = 1-15C alkyl, 1-4C alkoxy or halogen. Prepn. of polymers of 2-10C alkenes at 1-1000 bar and -50-300 deg.C using (A) and the resulting polymers are also claimed. ADVANTAGE - Use of (A) leads to lower levels of aluminium residue within the polymer prod.