Lim Technology Laboratories, Inc.

Howard A Bohm

Deborah R Friend

A microencapsulated insecticidal pathogen for application to vegetation is disclosed. An insecticidal viral, bacterial or fungal pathogen is encapsulated in a polymeric encapsulating agent such as Eudragit L, Eudragit S, Eudragit L or S with Eudragit RL, Eudragit L or S with Eudragit RS, polyacrylates, polyacrylic acids, cyclic acrylate polymer or mixtures thereof. Also encapsulated in the polymeric encapsulating agent is a sunscreening agent such as benzophenone, para amino benzoic acid, benzil, or mixtures thereof. Also disclosed is a process for encapsulating an insecticidal pathogen. The microcapsules of the invention effectively retain sunscreening agent within the capsule and are easily prepared without using toxic materials requiring subsequent removal.

Microencapsulated insecticidal pathogens

Liquid, controlled release formulations are provided by emulisifying an aqueous active ingredient-polymer complex, an organic solution of a film-forming polymer and an organic solvent, and a surfactant to form a first emulsion. An aqueous solution of a surfactant is emulsified with the first emulsion to produce a second emulsion and the organic solvent is subsequently removed to produce a liquid controlled release formulation. The formulation so produced includes an aqueous dispersion of microcapsules having permeable shells of the film-forming polymer and aqueous cores of the aqueous active ingredient-polymer complex.

Liquid controlled release formulations and method of producing same via

A microencapsulated insecticidal pathogen for application to vegetation is disclosed. An insecticidal viral, bacterial or fungal pathogen is encapsulated in a polymeric encapsulating agent such as Eudragit L, Eudragit S, Eudragit L or S with Eudragit RL, Eudragit L or S with Eudragit RS, polyacrylates, polyacrylic acids, cyclic acrylate polymer or mixtures thereof. Also encapsulated in the polymeric encapsulating agent is a sunscreening agent such as methyl orange, malachite green or its hydrochloride, methyl green, brilliant green, an FDC green, coomasie brilliant blue R, methylene blue HCl salt, brilliant cresyl blue, acridine yellow, an FDC yellow, an FDC red, fluorescein free acid or mixtures thereof. Also disclosed is a process for encapsulating an insecticidal pathogen. The microcapsules of the invention effectively retain sunscreening agent within the capsule and are easily prepared without using toxic materials requiring subsequent removal.

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Richmond, VA, United States of America

Howard A Bohm