Botanocap Ltd.

Ben-gurion University of the Negev Research and Development Authority

Arie Markus

Charles Linder

Pnina Strongin

Zvi Pelah

Amnon Kritzman

Zeev Wiesman

David Schuster

Method for the preparation of microencapsulated essential oils or a formulation thereof for various non-agricultural applications.

Applications of microencapsulated essential oils

Provided are microcapsules containing a solid core including at least one essential oil mixed with a porous solid material, where this solid core is coated by at least one layer of a polyurea film and/or a polyurethane film or an amphipathic shell composed of a multivalent salt form of at least one alkanoic acid. Further provided are compositions including these microcapsules, and uses thereof in a variety of agricultural and environmental applications.

Solid core microcapsular compositions and uses thereof

The present invention provides for a novel 'green' agricultural formulation comprising at least one encapsulated volatile essential oil and a non-volatile vehicle in which said at least one encapsulated volatile essential oil is carried.

Formulations containing microencapsulated essential oils

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.

Encapsulated essential oils

A new method for the preparation of microencapsulated essential oils is disclosed. The microcapsules containing essential oils or a formulation containing thereof may be used for various non-agricultural applications.

The invention provides an insecticidal composition comprising Diazinon ensulated in microcapsules, the microcapsules having an encapsulating wall formed essentially from the reaction product of toluene diisocyanate and a polyfunctional amine, and further provides a process for encapsulating Diazinon in a microcapsular formulation comprising providing an aqueous phase containing a non-basic emulsifier, providing an organic phase containing toluene diisocyanate and Diazinon, combining the aqueous and organic phase to form an oil in water emulsion, and adding an aqueous solution of a polyfunctional amine with agitation to the emulsion, whereby the amine reacts with the toluene diisocyanate to form microcapsular envelopes about the Diazinon material.

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Beer Sheva, Israel

Arie Markus