Bimodal polypropylenes and method of making same
US10766981B2 · kind B2 · utility
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24References
31Claims
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Key dates
| Filing date | Aug 4, 2015 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | May 20, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/035
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Bimodal polypropylene compositions and a process to form melt blended bimodal polypropylene compositions comprising combining at least two polypropylenes in at least a two-pass process, and forming a bimodal polypropylene composition having a Flexural Modulus (190° C., 1% secant) of at least 1700 MPa, as well as one or more other selected properties. These compositions are suitable for thermoformed articles and injection molded articles, any of which may be foamed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.