Light-curable compositions useful for forming composite materials
US12325768B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2020 |
| Grant date | Jun 10, 2025 |
| Priority date | — |
| Expiry date | Mar 10, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2335/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Composite materials are formed by photo curing compositions containing one or more cyanoacrylates, substantial amounts of one or more fillers (in particular, opaque and/or fibrous fillers such as carbon fibers) as well as particular photoinitiator systems. The photoinitiator system may comprise, for example, a metallocene compound such as a ferrocene in combination with an acylgermane or other photocleavable compound which generates an acyl radical when exposed to light. Complete, deep curing of such compositions to provide composite materials having improved mechanical properties can be achieved, even though the light used to initiate curing may not be capable of penetrating the entire thickness of the composition due to the presence of the filler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.