METALLOCENE CATALYSTS AND USE THEREOF IN POLYMERISATION PROCESSES Russian patent published in 2012 - IPC C08F2/34 C08F4/6592 C08F4/642 C08L23/02 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of polymerising olefin(s) to obtain polymers with improved film turbidity in the presence of cyclotetramethylene silyl (tetramethylcyclopentadienyl)(cyclopentadienyl) zirconium dimethyl, activated with an activator, on a support. Also disclosed is a method of improving polymer film turbidity comprising the following steps: a) obtaining a polymer via polymerisation of ethylene, olefin monomer containing 3-8 carbon atoms, and optionally one or more other olefin monomers containing 2-30 carbon atoms, in the presence of a catalyst system - metallocene, L^A(R'SiR')L^BZrQ₂, activated with an activator deposited on a support; b) mixing the polymer obtained at step (a) with another polymer containing olefin monomers containing 2-30 carbon atoms.

EFFECT: methods enable to obtain polymers with improved properties, particularly improved processability and film turbidity.

17 cl, 5 dwg, 8 tbl, 5 ex