Polypropylene-Based Compositions With Transparency And Elongational Properties
Patent No. EP4399243 (titled "Polypropylene-Based Compositions With Transparency And Elongational Properties") was filed by Totalenergies Onetech on Sep 2, 2022. The application was issued on Aug 20, 2025.
Patent Summary
A process for producing a polypropylene composition involves melt-blending two primary components to achieve a final comonomer content of 2.5 to 4.5 wt.%. Component A comprises 30 to 75 wt.% of the total weight and consists of propylene homopolymer resins, random propylene copolymer resins with $\le$1.0 wt.% comonomer (ethylene and/or $\text{C}_4\text{-C}_{20}$ $\alpha$-olefin), or mixtures thereof, featuring a melt index ($\text{MI}_2$) of 2.0 to 100.0 g/10 min (ISO 1133-1:2011, 230°C, 2.16 kg). Component B comprises 25 to 70 wt.% and consists of random propylene copolymer resins containing $\ge$5.0 wt.% comonomer (ethylene and/or $\text{C}_4\text{-C}_{20}$ $\alpha$-olefin). The process may optionally incorporate nucleating/clarifying agents, visbreaking agents, viscosity modulators, or neutralizing agents, and can utilize post-consumer or post-industrial recycled resins.
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Dossier Documents
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Date
Description
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EP4399243
- Application Number
- EP22773199A
- Filing Date
- Sep 2, 2022
- Status
- Granted And Under Opposition
- Jul 18, 2025
- Publication Date
- Aug 20, 2025
- External Links
- Slate, Register , Google Patents