METALLOCENE CATALYST AND METHOD OF PREPARING COPOLYMER OF CYCLOOLEFINS, MOLDED PRODUCT AND POLYMERIC ALLOY COMPRISING AT LEAST ONE POLYMER OF CYCLOOLEFINS Russian patent published in 2000 - IPC

FIELD: chemistry of polymers. SUBSTANCE: described is metallocene catalyst for preparing cycloolefin copolymer which is sterilely rigid metallocene compound comprising as ligands at least two substituted or unsubstituted cyclopentadienyl groups bonded together through monocyclic ring system, one cyclopentadienyl group being annealed to monocyclic system, and said system is different from 4-η⁵-3-alkylceclopentadienyl 4,6,6- trimethyl-η⁵-2-alkyl-4,5-tetrahydropentalene) and is essentially compound of formula I: wherein M is metal of group IV b of Periodic Table; R¹ and R² are the same or different and are halogen atom, alkyl having 1-10 carbon atoms, or group NR132

, wherein R¹³ is alkyl having 1- 10 carbon atoms, R³, R⁴, R⁵, R⁶, R⁷, R⁸ and R⁹ are the same or different and are hydrogen atom, alkyl 1-10 carbon atoms, or residue -R¹³-SiR133- wherein R¹³ is as defined above, R¹⁰ is alkyl having 1-20 carbon atoms; R¹¹ and R¹² are the same or different and are alkyl having 1-20 carbon atoms, aryl having 6-20 carbon atoms, alkenyl having 2-12 carbon atoms, and n is integer from 1 to 10. Also described are method of preparing cycloolefin copolymer and polymeric alloy comprising at least one cycloolefin polymer. EFFECT: improved physico-mechanical properties of copolymer of cycloolefins, especially polyolefins having greater breaking strength and higher transparency and higher polymerization activity. 11 cl, 34 ex, 1 tbl