Back to results
US 9,175,105 B2Granted
Copolymers
AssigneeIneos Sales (UK) Limited
InventorChoon Kool Chai
Life of this patent
Estimating the term…
Abstract
Copolymer of ethylene and an alpha-olefin, having a density>0.930 g/cm3,melt index (g/10 min)>4, molecular weight distribution (MWD)>3.0, and FNCT>250 hours. The copolymer is suitable for use in rotomolding applications. The copolymer possesses improved impact strength, improved permeation resistance and improved environmental stress crack resistance and may suitably be prepared by use of metallocene catalysts.
Claims10
A rotomoulded article comprising a copolymer of ethylene and an alpha-olefin, said copolymer having a
- (a) density>0.930 g/cm3,
- (b) melt index >4, measured at 2.16kg and 190° C.,
- (c) molecular weight distribution (MWD)>3.0,
- (d) full notch creep test (FNCT)>250 hours, measured at 23.0° C. and 6.00 MPa, and
- (e) a Composition Distribution Branch Index (CDBI) in the range 55 to 75%.
2 more elements
A rotomoulded article comprising a copolymer of ethylene and an alpha-olefin, said copolymer having a
- (a) density>0.930 g/cm3,
- (b) melt index >4, measured at 2.16kg and 190° C.,
- (c) molecular weight distribution (MWD)>3.5,
- (d) full notch creep test (FNCT)>500 hours, measured at 23.0° C. and 6.00 MPa, and
- (e) a Composition Distribution Branch Index (CDBI) in the range 55 to 75%.
2 more elements
Dependencies are inferred from the claim text.