POLYETHYLENE COMPOSITION AND FINISHED PRODUCTS OBTAINED FROM IT Russian patent published in 2015 - IPC C08L23/06 C08L23/08 C08F10/02 C08J5/18 

FIELD: chemistry.

SUBSTANCE: group of inventions relates to polyethylene compositions for films or cast products. Composition has melt fluidity index at 5 kg/190°C (MI_{5 kg}) from 0.25 to 3 g/10 min, M_z higher than 2000000 g/mol and lower than 370000 g/mol and Hostalen index (HI) value from 0.18 to 18. When melt fluidity index at 5 kg/190°C (MI_{5 kg}) is higher than 1.9 g/10 min, Hostalen index (HI) value is higher than 1.

EFFECT: polyethylene composition in accordance with invention, possessing specified molecular-weight distribution and long-chained branched structure, possesses improved technological properties, and obtained films have higher mechanical impact strength with film thickness being 10 mcm than at 20 mcm, in accordance with measurement of dart drop impact (DDI).

9 cl, 4 tbl, 8 ex, 1 dwg