Back to results
US 11,873,377 B2Granted
Blown films comprising bimodal ethylene-based polymers having high molecular weight high density fractions
AssigneeDow Global Technologies LLC
InventorsKyle E. Hart, Mehmet Demirors, Timothy W. Gambrel, Philip P. Fontaine, Vivek Kalihari, Francis O. Olajide, Jr., Rajen M. Patel
Life of this patent
Estimating the term…
Abstract
A blown film having a bimodal ethylene-based polymer including a high density fraction (HDF) from 3.0% to 25.0%, an I10/I2 ratio from 5.5 to 7.5, a short chain branching distribution (SCBD) less than or equal to 10 C, a zero shear viscosity ratio from 1.0 to 2.5, a density from 0.902 g/cc to 0.925 g/cc, and a melt index (I2) from 0.5 g/10 mins to 2.0 g/10 mins.
Claims20
A blown film comprising a bimodal ethylene-based polymer comprising:
- a high density fraction (HDF) from 3.0% to 25.0%, wherein the high density fraction is measured by crystallization elution fractionation (CEF) integration at temperatures from 93° C. to 119° C.;
- an I10/I2 ratio from 5.5 to 7.5, wherein I2 is a melt index when measured according to ASTM D 1238 at a load of 2.16 kg and temperature of 190° C. and I10 is a melt index when measured according to ASTM D 1238 at a load of 10 kg and temperature of 190° C.;
- a short chain branching distribution (SCBD) less than or equal to 10° C., wherein the short chain branching distribution is measured by CEF full width at half height;
- a density from 0.902 g/cc to 0.925 g/cc, wherein the density is measured in accordance with ASTM D792, Method B, and a melt index (I2) from 0.5 g/10 mins to 2.0 g/10 mins, wherein the melt index (I2) is measured in accordance to ASTM D1238 at 190° C. at 2.16 kg.
1 more element
Dependencies are inferred from the claim text.