Microencapsulation product and process
US8685425B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Oct 17, 2011 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | Oct 17, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2989
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Microcapsules possessing Lewis acid-Lewis base salt walls incorporate water-immiscible materials, such as N,N-di-ethyl-m-toluamide (DEET), as a core component. Such microcapsules, or similar microcapsules incorporating other core components, may be made by emulsifying a water-immiscible core component in an aqueous solution of one wall-forming reactant, such as the Lewis base, and then mixing that solution with the other wall-forming reactant, such as the Lewis acid. Various adjuvants may be included with the core component to contribute additional characteristics, such as enhancement of a controlled release characteristic or improved mechanical stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.