High stiffness, clarified polypropylene compositions having improved properties for food packaging
US12077661B2 · kind B2 · utility
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2References
21Claims
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Assignee
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Key dates
| Filing date | Dec 16, 2022 |
| Grant date | Sep 3, 2024 |
| Priority date | — |
| Expiry date | Dec 16, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/025
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Described herein are high stiffness, snappable food contact material compositions containing at least one polypropylene, a hydrocarbon resin, and optionally one or more other additives. The disclosed compositions exhibit a combination of mechanical, chemical, and/or optical properties that enable wider use of such polypropylene-based compositions in food packaging applications, including in Form-Fill-Seal food packaging where high stiffness, snappability, thin walls, and good clarity are important factors. Also described herein are articles comprising the disclosed compositions and methods of manufacturing such articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.