Reduction in VOC and FOG values of polypropylene grades by aeration
US12281218B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Oct 30, 2019 |
| Grant date | Apr 22, 2025 |
| Priority date | — |
| Expiry date | Feb 20, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/062
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for reducing the amount of volatile and semi-volatile organic substances of a polypropylene composition to below 150 μg/g (VOC, VDA 278 October 2011) and below 350 μg/g (FOG, VDA 278 October 2011).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.