Low density ethylene-based polymers with extracts at lower molecular weights
AssigneeDow Global Technologies LLC
InventorsOtto J. Berbee, Teresa P. Karjala, Cornelis F. J. den Doelder, Stefan Hinrichs
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Abstract
The invention provides an ethylene-based polymer comprising the following properties: A) a “weight fraction (w) of molecular weight greater than 106 g/mole, based on the total weight of polymer, and as determined by GPC(abs),” that meets the following relationship: w<A+B(I2), where A=0.090, and B=−4.00×10-3 (min/dg); B) a G′ value that meets the following relationship: G′<C+D log(I2), where C=162 Pa, and D=−90.0 Pa/log (dg/min); C) a melt index (I2) from 1 to 20 dg/min; and D) chloroform extractable that has a maximum Mw(conv) of less than, or equal to, 4,000 g/mole.
Claims15
An ethylene-based polymer comprising the following properties:
- A) a “weight fraction (w) of molecular weight greater than 106 g/mole, based on the total weight of polymer, and as determined by GPC(abs),” that meets the following relationship:
- w<A+B(I2), where A=0.090, and B=−4.00×10-3 (min/dg);
- B) a G′(500 Pa, 170° C.) value that meets the following relationship:
- G′≧C+D log(I2), where C=162 Pa, and D=−90.0 Pa/log (dg/min);
- C) a melt index (I2) from 1 to 20 dg/min;
- and
- D) chloroform extractable that has a weight average Mw(conv) of less than, or equal to, 4,000 g/mole.
Dependencies are inferred from the claim text.