Ethylene interpolymerizations

The invention claims ethylene/α of the polymerization method for olefin copolymer composition. The copolymer composition with controllable component and controllable molecular weight distribution. The method according to at least one of the effective a catalyst composition in a reactor, to produce a first of copolymer whose component and thin the molecular weight, and wherein the effective non-homogeneous Ziegler catalyst in at least one reactor. Is executed a product according hopes, a sequentially or two reactors are independently. The novel composition with an optical property (e.g. transparency, and light haze) and physical property (such as module, yield strength, toughness and tear) performance. A is arranged product of the composition is formed: Film, moulded article and fibre.