Crosslinked polymers with tunable coefficients of thermal expansion
US11873301B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2023 |
| Grant date | Jan 16, 2024 |
| Priority date | — |
| Expiry date | Mar 20, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2603/36
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Curatives and their resulting thermosets and other crosslinked polymers can reduce thermal expansion mismatch between an encapsulant and objects that are encapsulated. This can be accomplished by incorporating a negative CTE moiety into the thermoset resin or polymer backbone. The negative CTE moiety can be a thermal contractile unit that shrinks as a result of thermally induced conversion from a twist-boat to chair or cis/trans isomerization upon heating. Beyond CTE matching, other potential uses for these crosslinked polymers and thermosets include passive energy generation, energy absorption at high strain rates, mechanophores, actuators, and piezoelectric applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.