| 摘要 |
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 NR123, 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
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