Propylene-ethylene copolymer compositions suitable for hot fill packaging of foodstuffs
US11873355B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Jun 7, 2019 |
| Grant date | Jan 16, 2024 |
| Priority date | — |
| Expiry date | Jun 21, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2314/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Propylene-ethylene copolymer compositions and production methods are provided. The copolymer compositions can be particularly advantageous for use in hot fill packaging of foodstuffs. The propylene-ethylene copolymers can be produced using a Ziegler-Natta catalyst and an alkoxysilane electron donor. The compositions can have propylene as a primary monomer with an ethylene content ranging from 2.0 to 6.0 percent by weight with a xylene soluble content of less than 7.0 percent by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.