Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Biocides; animal or insect repellents or attractants
Patent
1987-12-07
1989-10-17
Lovering, Richard D.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Biocides; animal or insect repellents or attractants
264 44, 424 84, 424408, 424455, 424456, 424492, 42840222, A01N 2508, A01N 2528, B01J 1302
Patent
active
048746118
ABSTRACT:
A method of manufacture and the product made thereby are set forth; in the preferred and illustrated embodiment, a core including an insect poison is encapsulated by shell material melting and hardening for encapsulation. The core is primarily soybean extract mixed with DURSBAN.RTM. insecticide, an example of a toxicant. The surrounding shell or encapsulation is formed by melt extrusion of shell material. The surrounding shell encloses the core material to form an impervious shell. The surrounding shell includes soy protein as an insect attractant mixed in gelatin or poly(vinyl alcohol). A gelling agent such as carrageenan and the attractant were added to the shell. The beads formed by the melt extrusion encapsulation has sufficient shell strength to enable mechanical handling for dispensing, are resistant to water, do not bleed from the inside to the outside, and yet can be penetrated by the insect.
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Harlowe William W.
Mangold Donald J.
Polemenakos Sotiros C.
Potter J. Larry
Schlameus Herman W.
Lovering Richard D.
Majka Joseph T.
Osborne D. Wendell
The Dow Chemical Company
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