| US 7,459,509 B2 | ||
| Polyethylene resins | ||
| David Bruce Barry, Melbourne (Australia); Gary M. Diamond, San Jose, Calif. (US); Hitesh A. Fruitwala, Houston, Tex. (US); Shih-May Christine Ong, Warren, N.J. (US); and Chunming Wang, Acton, Mass. (US) | ||
| Assigned to ExxonMobil Chemical Patents Inc., Houston, Tex. (US) | ||
| Filed on Feb. 24, 2007, as Appl. No. 11/711,076. | ||
| Prior Publication US 2007/0173623 A1, Jul. 26, 2007 Prior Publication US 2008/0039606 A9, Feb. 14, 2008 |
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| Int. Cl. C08F 210/16 (2006.01); C08F 4/44 (2006.01); C08F 4/64 (2006.01); C08F 4/6392 (2006.01) | ||
| U.S. Cl. 526—113 [526/114; 526/118; 526/119; 526/160; 526/170; 526/348; 525/240] | 17 Claims |
| 1. An ethylene/α-olefin copolymer possessing a Bent Strip ESCR, T50, of at least 175 hours, wherein the copolymer has a bimodal molecular weight distribution and comprises at least a high molecular weight (HMW) polymer component and at least a low molecular weight (LMW) polymer component which has a lower weight average molecular weight and a higher density than the HMW polymer component, the copolymer prepared in a single reactor with a bimetallic polymerization catalyst comprising a Ziegler component and a metallocene component; wherein the HMW polymer component has a molecular weight distribution, Mw/Mn, of from 3 to 6. |