Hydrophilic polymer and membrane for oil-water separation and method of producing the same
US11117100B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Jan 18, 2017 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | Sep 27, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2325/36
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention relates to a hydrophilic polymer and membrane for oil-water separation. More particularly, this invention relates to a super hydrophilic polymer and membrane with zwitterionic property for oil-water separation, and method of producing the same. The hydrophilic polymer comprises polymer repeat units, each unit having at least one negatively charged carboxylic functional group and at least one positively charged amine functional group; and a monomer having a single aromatic ring and an imide functional group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.