High density polyethylene composition and closure
US9637626B2 · kind B2 · utility
4Cited by
5References
23Claims
0Family size
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Key dates
| Filing date | Jun 10, 2013 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Nov 20, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/45
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a high-density polyethylene (HDPE) composition that comprises at least a first high density polyethylene component having a density of 0.940-0.968 g/cm3 and a melt index I2.16 of 0.5-10.0 dg/min and a melt flow ratio (flow index I21.6 at 190° C. divided by melt index I2.16 at 190° C.) of at least 25. A second HDPE component may be included in the composition with melt index I2.16 of greater than 10 dg/min and melt flow ratio of 30 or less. The disclosed compositions are suitable for use in living hinge closure applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.