초록 ▼

A method of manufacturing and the product formed thereby are set forth; the product relates to an encapsulated insecticidal bait which in the preferred and illustrated embodiment has a surrounding shell about a core. The core is formed of a volatile fumigant or ingested toxicant mixed with an insect

A method of manufacturing and the product formed thereby are set forth; the product relates to an encapsulated insecticidal bait which in the preferred and illustrated embodiment has a surrounding shell about a core. The core is formed of a volatile fumigant or ingested toxicant mixed with an insect species attractant food such as soybean oil. The core is enclosed in a shell formed by a two part polycondensate system forming the shell about the core. A first part and a liquid define an interfacial contact around a bead of the first part wherein beads of the core material form droplets in the water. The polycondensate system is defined by the two-part intermediates, where the second part is added to the liquid ratably to encapsulate the droplets.

대표청구항 ▼

A method of manufacturing an encapsulated insecticidal bait sized for a particular target insect species wherein the bait has the form of a sphere sized for handling by the insect species and which bait is sufficiently rugged to enable machine dispersion and wherein the encapsulation encloses conten

A method of manufacturing an encapsulated insecticidal bait sized for a particular target insect species wherein the bait has the form of a sphere sized for handling by the insect species and which bait is sufficiently rugged to enable machine dispersion and wherein the encapsulation encloses contents thereof until broken open by the insect species, the method comprising the steps of: (a) forming a first mixture by mixing an oil based insect species attractant food with a poison for the particular insect species and one of a two part system forming a polycondensate: (b) in a container filled with a liquid not miscible with the first mixture, stirring the liquid while adding the first mixture while controlling the interfacial contact between the liquid and the first mixture by adjustment of surface tension therebetween and causing beads of the first mixture to form in the liquid; (c) separately gradually adding to the liquid the second of the two part system to cause polycondensate encapsulation of beads of the first mixture wherein the step of adding the second of the two part system is carried out by adding simultaneously therewith an attractant food for the insect species to form an encapsulated bead having the attractant food in the shell formed on the bead; and (d) removing the beads from the container.