Dual-functional ion exchange resins from agricultural by-products
US7098327B2 · kind B2 · utility
2Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2004 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Feb 11, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S502/516
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A process for the production of dual-functional ion exchange resins from lignocellulosic agricultural material involving anionization of the lignocellulosic agricultural material with citric acid and then cationization of the lignocellulosic agricultural material with dimethyloldihydroxyethylene urea (DMDHEU) and choline chloride, or cationization of the lignocellulosic agricultural material with DMDHEU and choline chloride and then anionization of the lignocellulosic agricultural material with citric acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.