Low density polyolefin resins and films made therefrom
AssigneeChevron Phillips Chemical Company LP
InventorsMax P. McDaniel, Ashish M. Sukhadia, Errun Ding, Chung Ching Tso, Albert P. Masino, Qing Yang, Lloyd W. Guatney, Guylaine St. Jean, Daniel G. Hert
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Abstract
Disclosed herein are broad molecular weight distribution olefin polymers having densities in the 0.895 to 0.930 g/cm3 range, and with improved impact and tear resistance. These polymers can have a ratio of Mw/Mn in the 8 to 35 range, a high load melt index in the 4 to 50 range, less than about 0.008 LCB per 1000 total carbon atoms, and a reverse comonomer distribution.
Claims25
An olefin polymer comprising a higher molecular weight component and a lower molecular weight component, wherein the olefin polymer has:
- a density in a range from about 0.895 to about 0.930 g/cm3;
- a ratio of Mw/Mn in a range from about 8 to about 35;
- a HLMI in a range from about 4 to about 50 g/10 min;
- a ratio of HLMI/MI in a range from about 50 to about 300;
- less than about 0.008 LCB per 1000 total carbon atoms;
- and
- a reverse comonomer distribution.
An ethylene copolymer selected from an ethylene/1-butene copolymer, an ethylene/1-hexene copolymer, or an ethylene/1-octene copolymer, the ethylene copolymer comprising a higher molecular weight component and a lower molecular weight component, and wherein the ethylene copolymer is characterized by:
- a density in a range from about 0.905 to about 0.925 g/cm3;
- a ratio of Mw/Mn in a range from about 8 to about 35;
- a HLMI in a range from about 4 to about 50 g/10 min;
- a ratio of HLMI/MI in a range from about 50 to about 300;
- less than about 0.008 LCB per 1000 total carbon atoms;
- and
- a reverse comonomer distribution.
Dependencies are inferred from the claim text.