Process for treating silica-filled polyamide by impregnation in supercritical CO2
US10487186B2 · kind B2 · utility
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21Claims
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Key dates
| Filing date | Oct 27, 2017 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | Oct 27, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/54
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a process for treating a polyamide-based material comprising silica fibers and/or fillers, by impregnation with at least one hydrophobic additive in supercritical CO2.The invention also relates to a polyamide-based material comprising silica fibers and/or fillers and impregnated with at least one hydrophobic additive, obtained via such a process, and to the use thereof as an electrically insulating component in an electrical device, in particular in a circuit breaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.