Fibrous material impregnated with thermoplastic polymer having a thickness of less than or equal to 100MM and method for the production thereof
US12319018B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2019 |
| Grant date | Jun 3, 2025 |
| Priority date | — |
| Expiry date | Apr 12, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2377/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An impregnated fibrous material including at least one fibrous material of continuous fibers and: at least one non-reactive thermoplastic polymer matrix, or at least one reactive thermoplastic prepolymer, which is a precursor of the non-reactive thermoplastic polymer, optionally mixed with a chain extender, wherein the at least one non-reactive thermoplastic polymer or the reactive prepolymer is an amorphous polymer or prepolymer having a glass transition temperature such that Tg≥80° C., or is a semi-crystalline polymer or prepolymer having a melting temperature Tf≥150° C., the fiber content in the pre-impregnated fibrous material being between 45 and 65 volume %, and the average thickness of the impregnated fibrous material being less than or equal to 100 μm, independently of the number of fibers present in the fibrous material before impregnation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.