Ethylene/alpha-olefin copolymer composition, and articles comprising the same
US10696828B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Feb 22, 2017 |
| Grant date | Jun 30, 2020 |
| Priority date | — |
| Expiry date | Feb 22, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An ethylene/alpha-olefin copolymer composition having a density from 0.935 to 0.955 g/cc; a ratio of weight average molecular weight to number average molecular weight, Mw/Mn, of from 3 to 10; a z-average molecular weight, Mz, from 200 kg/mol to 500 kg/mol; and a PENT value of greater than 500 hours at 80° C. and 2.4 MPa; wherein when the composition is formed into a monolayer pipe the pipe has a pipe hydrostatic strength of greater than 100 hours at 20° C. and 12.0 MPa. Also provided is a pipe or pipe fitting comprising the ethylene/alpha-olefin copolymer composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.