Photogenerated nanoporous materials
US6380270B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 2000 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Sep 26, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2371/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A composition has a polymeric network that includes a porogen and a photoinitiator. The photoinitiator produces a reactive species upon irradiation, which reacts with the porogen in a degradation reaction that degrades at least some of the porogen. A method of forming a nanoporous polymer has one step in which a plurality of polymeric strands, a photoinitiator, and a porogen are provided. In a subsequent step, at least some of the polymeric strands are crosslinked to form a polymeric network that includes the porogen and the photoinitiator, and in a further step the photoinitiator in the polymeric network is irradiated to generate a reactive species that reacts with the porogen in a degradation reaction to degrade at least some of the porogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.