Flexible electroconductive foam, and method of preparation thereof
US7008565B2 · kind B2 · utility
5Cited by
10References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2002 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Nov 19, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31551
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of preparing an electroconductive foam, and the foam so prepared. An electroconductive polymer such as polyaniline is dispersed in a liquid medium that includes an aromatic solvent such as xylene and an organic dopant/dispersant such as an aromatic sulfonic acid. The electroconductive polymer together with the organic dopant/dispersant constitute between 10% and 25% of the resulting dispersion. The dispersion is introduced to the pores of an electrically insulating foam matrix such as polyurethane. Excess dispersion is expelled and the foam is dried actively, to line the pores with an electroconductive lining.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.