Polyethylene-based composition and process for the manufacture of articles shaped from the composition
US7052754B2 · kind B2 · utility
1Cited by
6References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 14, 1998 |
| Grant date | May 30, 2006 |
| Priority date | — |
| Expiry date | May 5, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/269
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyethylene-based composition for which the standard density, measured at 23° C. according to ASTM Standard D 792, is greater than 940 kg/m3 and which comprises talc in an amount of less than 1 part per 100 parts by weight of polyethylene. The composition is preferably in the form of extruded granules. It exhibits a markedly improved creep resistance. Process for the manufacture of shaped articles and articles shaped from the composition, in particular pipe couplings and pipes intended for the transportation of pressurized fluids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.