Polyethylene compositions having high dimensional stability and excellent processability for caps and closures
US9074082B2 · kind B2 · utility
24Cited by
59References
52Claims
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Key dates
| Filing date | Dec 6, 2013 |
| Grant date | Jul 7, 2015 |
| Priority date | — |
| Expiry date | Dec 6, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2308/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A dual reactor solution polymerization process gives high density polyethylene compositions containing a first ethylene copolymer and a second ethylene copolymer and which have high dimensional stability, excellent processability as well as good organoleptic properties and reasonable stress cracking resistance. The polyethylene compositions are suitable for compression molding or injection molding applications and are useful, for example, in the manufacture of caps and closures for bottles, and for example, in bottles containing non-pressurized liquids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.