Method for impregnating reinforcing fibres with polyaryletherketones and semi-products obtained therefrom
US12384894B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2023 |
| Grant date | Aug 12, 2025 |
| Priority date | — |
| Expiry date | May 23, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2361/18
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for the preparation of a semifinished product including a PAEK-based resin and reinforcing fibers, including the stages of: a. preparation of a dispersion including a PAEK-based resin in the pulverulent form dispersed in an aqueous phase including a surfactant; b. bringing the reinforcing fibers into contact with said aqueous dispersion; c. drying the fibers impregnated with dispersion; and d. heating the impregnated fibers to a temperature sufficient for the melting of the resin, so as to form a semifinished product, wherein the surfactant is a thermally stable surfactant. Also, semifinished products capable of being obtained from the process and their use in the manufacture of composite materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.