METHOD OF OBTAINING ELASTIC COPOLYMERS OF ETHYLENE AND ALPHA-OLEFINS Russian patent published in 2014 - IPC C08F210/16 C08F4/6592 C08F2/04 C08L23/08 

FIELD: chemistry.

SUBSTANCE: claimed invention relates to method of obtaining copolymers of ethylene and α-olefin and to copolymers, obtained by claimed method, which can be adapted to wide number of various applications, including film, electric wires and thermomelting glues. Copolymers have content of (C3-C18) α-olefin from 10 wt % to 45 wt % of copolymer, molecular-weight distribution (Mw/Mn) from 1.5 to 3.0 and density 0.850-0.900 g/cm³. Method of obtaining copolymers of ethylene and (C3-C18) α-olefin is realised in solution at temperature of copolymerisation from 80°C to 140°C in single reactor or in continuous reactors, connected successively or in parallel way for 2-stage reactions. Catalytic composition contains activator and catalyst, composition of which includes compound with transition metal, represented by chemical formula (1) , where X² represents and the remaining values of radicals are given in the invention formula.

EFFECT: method of copolymerisation of ethylene with α-olefin makes it possible to obtain copolymer, which has strict value of molecular-weight distribution and homogeneous distribution of density, with density not higher than 0,910 g/cm³, with high activity and excellent reaction activity on highly molecular α-olefin.

11 cl, 2 tbl, 2 dwg, 12 ex