High exchange-capacity anion exchange resin with dual functional-groups and method of synthesis thereof
US9950319B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 13, 2015 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Jul 13, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F212/36
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present disclosed are a high exchange-capacity anion exchange resin with dual functional-groups and method of synthesis thereof. The invention relates to the field of environmental function material synthesis and application. The resin is based on chloromethylated polystyrene-divinylbenzene polymer as matrix, and by primary amination and quaternization, yields an anion exchange resin with dual functional-groups having both a weak base anionic group and a strong base anionic group. The anion exchange resin not only has high adsorption capacity for water-born nitrate ions, but also can effectively squelch natural organic acids such as phytic acid in water, thus simultaneously removing nitrate ions and phytic acid organic matter from water. Therefore, the resin has a broad application potential in the fields of drinking water treatment, groundwater remediation, and advanced urban sewage treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.