FIELD: chemistry.
SUBSTANCE: invention pertains to making a new metallocene catalytic system for synthesis of polyolefins. Description is given of a metallocene system for synthesis of polyethylene and polypropylene, consisting of dimethylated metallocene IVB groups, cation-generating activator, triisobutylaluminium and a Lewis base, distinguished by that, the dimethylated metallocene IVB group is substituted or unsubstituted bridge bisindenyl or cyclopentadienylfluoronyl metallocene. The Lewis base is in form of alkylarylamine or triarylamine, in ratio of 0.1-10 mol/mol to a transition metal. Description is also given of the method of obtaining polyethylene and polypropylene in the presence of this catalytic system.
EFFECT: formation of a new catalytic metallocene system, providing for increase in activity of metallocene catalysts and the possibility of varying molecular mass properties of polyolefine.
4 cl, 1 tbl, 31 ex
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Year |
Author |
Number |
| HOMOGENEOUS CATALYTIC SYSTEM FOR SYNTHESIS OF POLYETHYLENE AND STEREOBLOCK POLYPROPYLENE, METHOD OF PREPARING STEREOBLOCK POLYPROPYLENE, AND METHOD OF PREPARING POLYETHYLENE |
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