Weatherable fiber-reinforced propylene composition
US11931973B2 · kind B2 · utility
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24Claims
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Key dates
| Filing date | Feb 19, 2019 |
| Grant date | Mar 19, 2024 |
| Priority date | — |
| Expiry date | Aug 9, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/0075
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A fiber-reinforced polymer composition that comprises a polymer matrix that contains a propylene polymer is provided. The polymer matrix constitutes from about 20 wt. % to about 90 wt. % of the composition, and the composition further comprises a plurality of long reinforcing fibers that are distributed within the polymer matrix, wherein the fibers constitute from about 10 wt. % to about 60 wt. % of the composition. Further, the composition also comprises a stabilizer system comprising a sterically hindered phenol antioxidant, phosphite antioxidant, and thioester antioxidant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.