Scalable inter-diffused zwitterionic polyurethanes for durable antibacterial coatings
US11873417B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Jan 6, 2022 |
| Grant date | Jan 16, 2024 |
| Priority date | — |
| Expiry date | Mar 17, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2270/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Durable antibacterial coatings are prepared by inter-diffusing zwitterionic polyurethane in acrylic polyurethane. Bacterial attachment is substantially eliminated from the surface of the coatings due to the hydrophilicity of the zwitterionic polyurethane. Long-term antibacterial properties were observed for both Gram-negative and Gram-positive bacteria even when the coatings were constantly challenged by mechanical abrasion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.