Antimicrobial coatings comprising quaternary silanes
US10258046B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2018 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | May 2, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D183/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of preparing an antimicrobial coating comprises coating a surface with an aqueous mixture of 3-(trihydroxysilyl)propyl dimethyloctadecyl ammonium chloride, 3-chloropropyltrimethoxysilane, and triethanolamine and then coating the surface with an aqueous titanyl sol-gel solution comprising an aqueous mixture of peroxotitanium acid and peroxo-modified anatase sol overtop of the silane to form the antimicrobial coating. The antimicrobial coating exhibits residual antimicrobial efficacy against E. coli and S. epidermidis after water rinsing or after abrasion. The use of 3-chloropropyltrimethoxysilane was found to improve storage stability of the quaternary silane composition and the durability of the antimicrobial coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.