Superabsorbent materials comprising peroxide
US9873751B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Nov 14, 2014 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Nov 14, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1324
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
This invention pertains to a polymeric composition and an antimicrobial composition, each comprising a superabsorbent polymer (SAP), such as used in diapers and sanitary napkins, and peroxide. The superabsorbent material can be made by the process of treating a preformed SAP, such as a crosslinked polyacrylate salt, with a treatment solution comprising hydrogen peroxide dissolved in water, followed by drying. The resulting superabsorbent material has strong antimicrobial activity. Optionally, the treatment solution may also contain a metal salt, including those of zinc, zirconium, and magnesium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.