METHOD FOR PREPARING CYCLOOLEFIN (CO)POLYMERS FOR USING IN OPTICAL MEMORY DEVICES Russian patent published in 2003 - IPC

FIELD: organic chemistry, antibiotics. SUBSTANCE: cycloolefin copolymers used in optical memory devices can be synthesized by (co)polymerization of monomers taken among group of cyclic olefins, α--olefins with two or more carbon atoms and optimally conjugated or non-conjugated diolefins. Metallocenes or π--complex compounds of formulas (I) or (XIII) by claim 1 given in the invention claim where CpI and CpII represent carbanions with cyclopentadienyl-containing structure are used as catalysts; πI and πII represent charged or electrically neutral π-systems; D represents donor atom and A represents acceptor atom being D and A are linked by reverse coordination linkage thus donor group accepts (partial) positive charge and acceptor group accepts (partial) negative charge; M represents transient metal of III, IV or VI by-side group of periodic law system elements including lanthanides and actinides; X represents anion equivalent and n means depending on M charge 0, 1, 2, 3 or 4. Cycloolefin (co)polymers exhibit many useful properties, for example, high transparency in initial moment of their using in the field of optical memory devices, high thermal stability, stability against aging, chemical stability, resistance to solvents, low hygroscopicity, resistance against scratching. EFFECT: improved preparing method, valuable properties. 11 cl, 60 ex