HOMOGENEOUS CATALYTIC SYSTEM FOR SYNTHESIS OF POLYETHYLENE AND STEREOBLOCK POLYPROPYLENE, METHOD OF PREPARING STEREOBLOCK POLYPROPYLENE, AND METHOD OF PREPARING POLYETHYLENE Russian patent published in 2002 - IPC

Abstract RU 2178423 C2

FIELD: polymerization catalysts and processes. SUBSTANCE: invention relates to synthesis of polyolefins in presence of high- efficiency HOMOGENEOUS catalytic systems based on IVB-group metallocene complexes and organoaluminum compounds. Catalytic system in question is dialkyl bis(2-arylindenyl) complexes of IVB-group metals and trialkylaluminum at Al/M ratio from 50 to 500. Basically new two-component catalytic system allows one to use low concentrations of metallocene complexes. EFFECT: increased catalytic activity.

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RU 2 178 423 C2

Authors

Bravaja N.M.

Tsvetkova V.I.

Nedorezova P.M.

Bazhenova T.A.

Saratovskikh S.L.

Panin A.N.

Dates

2002-01-20Published

2000-03-28Filed