Methods for purifying polymers using solid scavengers
US7687601B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Oct 3, 2006 |
| Grant date | Mar 30, 2010 |
| Priority date | — |
| Expiry date | Aug 27, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/151
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Conductive polymers are purified using a solid scavenger. The solid scavengers include metal-scavenging functional groups linked to the surface of a particle support material. To improve the functionalization of the support material, the support materials are first treated with sulfuric acid or nitric acid before attaching the molecules containing the metal-scavenging functional groups. The solid scavengers used in the purification methods are more efficient at removing impurities in conductive polymers than existing scavengers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.