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US 2017/0362356 A1Published application
Tubular Low Density Ethylene-Based Polymers with Improved Balance of Extractables and Melt Elasticity
AssigneeDow Global Technologies LLC
InventorsCornelis F.J. Den Doelder, Otto J. Berbee, Stefan Hinrichs, Teresa P. Karjala
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Abstract
The invention provides an ethylene-based polymer comprising the following properties: a) weight fraction (w) of molecular weight above 5*106 g/mol, w>A−B*I2, where A=0.4 wt %, and B is 0.02 wt %/(dg/min), and w<C−B*I2%, where C=0.9 wt %; and b) G′>D−E*log(I2), where D=162 Pa and E=52 Pa/log(dg/min).
Claims21
1-13. (canceled)
An ethylene-based polymer comprising the following properties:
- a) weight fraction, as a percentage (w) of molecular weight above 5*106 g/mol, w>A−B*I2, where A=0.4 wt %, and B is 0.02 wt %/(dg/min), and w<C−B*I2%, where C=0.9 wt %;
- b) G′ (at G″ equal to 500 Pa)>D−E*log(I2), where D=162 Pa and E=52 Pa/log(dg/min),
- c) an Mw(abs) versus melt index (I2) relationship:
- Mw(abs)≦A+B*log(I2), where A=3.50*105 grams per mole (g/mole), and B=−1.20*105 (g/mole)/log(dg/min);
- and
- d) n-hexane extractables <X wt %+Y*log(I2), where X=2.3 wt % and Y=1.66 wt %/log(dg/min).
3 more elements
Dependencies are inferred from the claim text.