Composition and method for retention of solvated compounds and ions
US9693553B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Apr 21, 2016 |
| Grant date | Jul 4, 2017 |
| Priority date | — |
| Expiry date | Apr 21, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/05
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Storage stable polyhydroxylated aromatic ether adducts of polyalkylene oxide are described. Reactive compositions are formed by combining an ether adduct with an aldehyde, optionally further adding a phenolic-aldehyde prepolymer. The reactive compositions are cured by removing water, by acidification, or both. The cured compositions sorb solvated compounds from environments containing water. The cured compositions are also useful for pre-loading with compounds that are subsequently released at a controlled rate into environments containing water.
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