Separating carboxylic acids
US10550064B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Nov 1, 2016 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | Nov 1, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C59/265
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process of separating carboxylic acids comprising two steps. The first step is to provide an aqueous solution comprising (i) one or more mono-carboxylic acids, (ii) one or more di-carboxylic acids, and (iii) one or more tri-carboxylic acids. The second step is to pass the aqueous solution through a collection of resin particles, where the resin particles comprise covalently bound quaternary ammonium groups, and wherein the collection of resin particles has uniformity coefficient of 1.5 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.