Patent ID: 6855351
Filing Date: 2005-02-15
Classification: A01N

Abstract:
1. A process for making a neem oil-based emulsion concentrate containing at least 300 ppm of azadirachtin, comprising the steps of, in order: a) preparing neem seeds from neem fruits, b) preparing neem seed kernels from the neem seeds, c) preparing neem oil from the neem seeds, d) preparing an azadirachtin concentrate extract containing at least 300 ppm of azadirachtin by solvent extraction of the neem seed kernels and thereafter purifying by reverse osmosis, e) reducing an oil density of the neem oil by thermic processing under controlled conditions, f) emulsifying the neem oil, g) dosing the emulsified neem oil with the azadirachtin concentrate extract to yield a pesticide containing at least 300 ppm of azadirachtin.