Unimodal polyethylene copolymer and film thereof
AssigneeUnivation Technologies, LLC
InventorsBo Liu, Yi Zhang, Ayush A. Bafna, François Alexandre, Robert N. Reib
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Abstract
A unimodal ethylene-co-1-hexene copolymer that, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by combination of melt elasticity and complex viscosity ratio (shear thinning)properties. A blown film consisting essentially of the unimodal ethylene-co-1-hexene copolymer. A method of synthesizing the unimodal ethylene-co-1-hexene copolymer. A method of making the blown film. A manufactured article comprising the unimodal ethylene-co-1-hexene copolymer.
Claims10
A unimodal ethylene-co-1-hexene copolymer that, when in melted form at 190° C., exhibits a melt property space defined by a combination of melt elasticity and complex viscosity ratio properties, wherein the combination is defined according to equation 1 (Eq. 1):
- 6*SH1000+1,721<G′ (G″=3,000 Pa)<6*SH1000+1,828 (Eq. 1);
- wherein < is less than;
- * is multiplication;
- + is addition;
- G′ (G″=3,000 Pa) is melt elasticity in Pascals (Pa) measured according to Melt Storage Modulus Test Method at loss modulus G″=3000 pascals;
- SH1000 is a complex viscosity ratio equal to Eta*0.126/Eta*126, wherein Eta*0.126 is complex viscosity in pascal-seconds (Pa-s) measured at 0.126 radian per second (rad/s) by Dynamic Mechanical Analysis Test Method;
- and Eta*126 is complex viscosity in Pa-s measured at 126 rad/s by the Dynamic Mechanical Analysis Test Method;
- wherein the unimodal ethylene-co-1-hexene copolymer has a high load melt index (I21) from 15.0 to 25.0 grams per 10 minutes (g/10 min.), measured according to ASTM D1238-13 (190° C., 21.6 kg).
Dependencies are inferred from the claim text.