Encapsulated Essential Oils

摘要

A process for the preparation of essential oil microcapsules including dissolving a di- or polyisocyanate into an essential oil, emulsifying the resulting mixture in an aqueous solution containing a di- or polyamine, and or a di or polyhydroxy compound to effect encapsulation of the essential oil through interfacial polymerization, whereby there is formed a polyurea and/or polyurethane film around the essential oil droplets which film enhances the stability of the essential oil, reduces its evaporation rate and controls its release rate when applied to a substrate.

主权项

1. A microcapsule comprising a polyurea and/or polyurethane film encapsulating a volatile essential oil, the polyurea and/or polyurethane film having a permeability providing sustained release of the essential oil, wherein the encapsulated essential oil, upon release, is capable of serving as a disinfectant, a pesticide, an insect repellant, an antiviral agent, an antifungal agent or any combination thereof.