POLYOLEFINIC COPOLYMERIC COMPOSITION , METHOD OF POLYMERIZATION (VERSIONS), METALLOCENE CATALYST, FILM BASED ON COMPOSITION AND MIXTURE OF TWO OR MORE POLYMERIC COMPONENTS Russian patent published in 2002 - IPC

FIELD: polymers, chemical technology. SUBSTANCE: invention relates to a polyolefinic copolymeric composition synthesized with a catalyst containing a metallocene complex in a single reactor by the polymerization method of α--olefinic monomer with one or more olefinic co-monomers and having the maximum of molecular mass in that 50 wt.% part of the composition that has the highest percent content of co-monomer. Preferably, the composition has an index of co-monomer C_pf, distribution that is = or > 1.10 or an index of molecular-mass distribution M_pf, that is = or > 1.15. The preferable composition has also 0.01 long- chain branches per 1000 carbon atoms in the main chain of polymer, not less, These composition with reverse molecular technology show the excellent properties and can be easily processed due to the simultaneous presence of the combination of high molecular mass with high content of co-monomer and a long-chain branch. Invention describes a metallocene catalyst used in polymerization, a film based on the composition and a mixture of two or more polymeric components. EFFECT: improved method of polymerization, valuable properties of copolymer. 21 cl, 14 dwg, 11 tbl, 21 ex