Method for preparation of attapulgite-based pH-responsive antibacterial material
US11700849B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2021 |
| Grant date | Jul 18, 2023 |
| Priority date | — |
| Expiry date | Feb 9, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA23K50/75
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a method for preparing an attapulgite-based pH-responsive antibacterial material, including: directly spraying a natural aldehyde-based antibacterial agent onto an attapulgite powder under stirring, and constantly stirring the attapulgite powder for 20-30 min; grinding the attapulgite powder in a ball mill for 30-60 min to obtain a ground attapulgite powder; placing the ground attapulgite powder in a stirred tank, and spraying a chitosan-citric acid aqueous solution onto the ground attapulgite powder; after spraying, constantly stirring the ground attapulgite powder for 30-120 min; and finally drying the ground attapulgite powder to obtain a dried attapulgite powder, sieving the dried attapulgite powder to obtain a sieved attapulgite powder, and packaging the sieved attapulgite powder to obtain the antibacterial material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.