Antimicrobial hydrophilic polyurethane foam sponges
US10966588B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2017 |
| Grant date | Apr 6, 2021 |
| Priority date | — |
| Expiry date | Nov 27, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N55/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The inventors of the present disclosure recognized that, surprisingly, the antimicrobial treatments used on cellulosic sponges do not work in hydrophilic polyurethane sponges. As such, the inventors of the present disclosure discovered a need for an antimicrobial treatment for use on hydrophilic polyurethane foam sponges. The present inventors invented one antimicrobial composition for use on hydrophilic polyurethane foam sponges including an acetate salt solution humectant. The present inventors invented another antimicrobial composition for use on hydrophilic polyurethane foam sponges including a non-halogen humectant comprising a salt solution having a pH between about 3 and 10 and a water activity of less than 0.9 at 25° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.