Ethylene-a-olefin copolymer and molded article
US8871885B2 · kind B2 · utility
1Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2008 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Oct 11, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2410/01
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An ethylene-α-olefin copolymer wherein the copolymer has a monomer unit based on ethylene and a monomer unit based on an α-olefin having 3 to 20 carbon atoms, the density (d) is 860 to 950 kg/m3, the melt flow rate (MFR) is 1 to 100 g/10 min, the ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) is 4 to 30, the ratio (Mz/Mw) of the Z average molecular weight (Mz) to the weight average molecular weight (Mw) is 2 to 5, the swell ratio (SR) is 1.8 or more, and the characteristic relaxation time (τ) obtained by linear viscoelasticity measurement is 0.01 to 10 seconds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.