CATALYST COMBINATION, ISOTACTIC POLYMERS, METHOD FOR PRODUCING LINEAR ISOTACTIC POLYMERS, AND THE USE OF SAID POLYMERS

摘要

The invention relates to a catalyst combination which is used to produce linear isotactic polymers and contains an activator and an asymmetric metal complex according to formula I, wherein R6-R9 represents hydrogen, linear or branched C1-C10 alkyl, five-membered to seven-membered cycloalkyl that can carry a plurality of C1-C6 alkyl radicals as substituents, and C6-C18 aryl, arylalkyl or alkylaryl, with the proviso that the radicals R6/R7 or R8/R9 are bound into five-membered to seven-membered fused cycloalkyl or aryl rings that can be substituted, interrupted by heteroatoms and/or linked to another cycloalkyl and/or aryl ring.