Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
July 14, 2015
Patent Application Number
10556633
Date Filed
May 6, 2004
Patent Citations Received
Patent Primary Examiner
Patent abstract
The invention provides a process for the preparation of essential oil microcapsules comprising 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 said 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 said essential oil, reduces its evaporation rate and controls its release rate when applied to a substrate.
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