Encapsulation method for compounds
US9381485B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2006 |
| Grant date | Jul 5, 2016 |
| Priority date | — |
| Expiry date | Mar 22, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J13/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of encapsulating a volatile, water-soluble substance in capsules having a hydrogel shell and an oily interior includes (i) providing blank capsules having a hydrogel shell and an oily interior and (ii) immersing the capsules in an aqueous solution of the volatile, water-soluble substance for a time sufficient for them to load to a desired extent with the volatile, water-soluble substance. The aqueous solution additionally has dissolved therein to saturation point at least one water-soluble, non-volatile material. The method permits the easy and durable encapsulation of volatile materials that hitherto have been difficult to encapsulate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.