Copolymers
US9228030B2 · kind B2 · utility
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13References
4Claims
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Assignee
Inventor
Key dates
| Filing date | Nov 27, 2013 |
| Grant date | Jan 5, 2016 |
| Priority date | — |
| Expiry date | Nov 27, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A copolymer of ethylene and an alpha-olefin, said copolymer having a (a) density>0.930 g/cm3, (b) melt index (g/10 min)>4, (c) molecular weight distribution (MWD)>3.0, and (d) FNCT>250 hours, and is described suitable for use in rotomolding applications. In particular the novel copolymers result in improved impact strength, improved permeation resistance and improved environmental stress crack resistance and may suitably be prepared by use of metallocene catalysts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.