ETHYLENE/ALPHA-OLEFIN COPOLYMERS, CHARACTERIZED BY EXCELLENT PROCESSABILITY Russian patent published in 2018 - IPC C08F210/16 C08F210/02 C08F4/6592 

FIELD: chemistry.

SUBSTANCE: invention relates to an ethylene/alpha-olefin copolymer characterized by excellent processability. Ethylene/alpha-olefin copolymer has a density of 0.930–0.950 g/cm³, MFR₅ 0.1–5, ratio of melt flow rates MFR_21.6/MFR₅ 10–200. When the graph of the complex viscosity is approximated (η^*[Pa⋅sec]) of the frequency (ω[rad/sec] in the range from 0.05 rad/s to 500 rad/s) by the power law of equation 1, where C₁ corresponds to 250,000–400,000, C₂ is in the range from -0.7 to -0.5. When approximated by the cross model of equation 2, where D₁ is in the range of 1,500,000–2,500,000, D₂ is in the range 3–10, and D₃ is in the range of 0.2–0.3. [Equation 1] . [Equation 2] .

EFFECT: ethylene/alpha-olefin copolymer has a low complex viscosity at high shear rate and excellent processability.

9 cl, 3 dwg, 5 ex, 3 tbl