Polypropylene-based compositions with transparency and elongational properties
US12146036B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2022 |
| Grant date | Nov 19, 2024 |
| Priority date | — |
| Expiry date | Sep 2, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The disclosure provides a process to produce a polypropylene composition remarkable in that it comprises providing from 30 to 75 wt. % of a component A based on the total weight of the composition, the component A being one or more propylene homopolymer resins; providing from 25 to 70 wt. % of a component B based on the total weight of the composition, the component B being one or more random propylene copolymer resins comprising propylene and one or more comonomers selected from ethylene and C4-C20 alpha-olefin, wherein the content of the comonomers is at least 5.0 wt. % based on the total weight of the component B; melt-blending the components to form the composition having a comonomer content ranging from 2.5 to 4.5 wt. % based on the total weight of the composition. The disclosure also relates to such a composition and an article made from said composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.