Method to produce colorless, high porosity, transparent polymer aerogels
US10836855B2 · kind B2 · utility
2Cited by
7References
29Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 26, 2018 |
| Grant date | Nov 17, 2020 |
| Priority date | — |
| Expiry date | Oct 29, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2205/026
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method to produce a polymer gel includes dissolving precursors in a solvent to form a precursor solution, the precursors including polymer precursors, a stable free radical, one or more initiating radicals, and one or more stable free radical control agents, and heating the precursor solution to a temperature of polymerization to produce a cross-linked gel. A dried polymer aerogel has a Brunauer-Emmett Teller (BET) surface area over 100 m2/g, porosity of greater than 10%, visible transparency greater than 20%, color rendering index of over 20%, and average pore size of less than 100 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.