Fiber tows with a heat-activated sizing
US11639316B2 · kind B2 · utility
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23Claims
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Key dates
| Filing date | Sep 25, 2019 |
| Grant date | May 2, 2023 |
| Priority date | — |
| Expiry date | Sep 25, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2237/38
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Fiber tows including a heat-activatable sizing are described. The sizing compositions have a first modulus at 25° C. of at least 150 megapascals (MPa) and no greater than 400 MPa; and a second modulus of 100,000 pascals (Pa) at a temperature of no greater than 160° C. Methods of preparing articles from such sized fiber tows and the articles comprising such sized fiber tows, including unidirectional and bidirectional constructions are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.