Photo-responsive dampening and toughening agents
US12338322B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2023 |
| Grant date | Jun 24, 2025 |
| Priority date | — |
| Expiry date | Jul 31, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2211/1014
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In various aspects, a cured polymer glass may be provided. The cured polymer glass may include a polymer glass component (such as an epoxide component and an amine component), and an azobenzene photo-responsive modifying agent. The modifying agent may cause a reversible transition in the cured polymer glass from a first state to a second state when the modifying agent is exposed to a light condition (such as specific wavelengths of light). The glass transition temperature (Tg) of the cured polymer glass may be at least 100° C. The first state may have at least one different mechanical property than the second state. The reversible transition may be configured to occur when the cured polymer glass is at a first temperature below a Tg of the cured polymer glass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.