BRIDGE CHIRAL METALLOCENES AND A METHOD OF THEIR SYNTHESIS (VARIANTS) Russian patent published in 1997 - IPC

Abstract RU 2081876 C1

FIELD: metalloorganic chemistry. SUBSTANCE: product: metallocenes of the formula (I), where M¹ means preferably titanium, zirconium of hafnium; R¹ means residue and M² means carbon or silicon; R⁴ and R⁵ are similar and mean hydrogen or alkyl-group; p = 1 or 2; R² means hydrogen or alkyl-group and residues R³ are similar and mean halogen or alkyl-group and form together with alumoxane catalytic system as catalyst that can be used for polymerization of olefins. EFFECT: improved method of synthesis, enhanced effectiveness of catalyst. 6 cl

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RU 2 081 876 C1

Authors

Jurgen Rormann[De]

Dates

1997-06-20—Published

1992-08-06—Filed