Pyriproxyfen floating granules and preparation method thereof

Abstract

The invention discloses pyriproxyfen floating granules and a preparation method thereof in the technical field of pesticides. The pyriproxyfen floating granules are prepared from the following components in percentage by mass: 1-13% of an active ingredient, 25-37% of a carrier, 2-8 % of a dispersing agent, 1-4% of a wetting agent, 5-10% of a binding agent, 2-12% of a disintegrating agent and the balance of a filler, totaling 100%. The preparation method comprises the following steps of: well mixing the active component, the carrier, the dispersing agent, the wetting agent, the disintegrating agent and the binding agent of the pesticide; crushing the mixture, mixing the crushed mixture with the filler and water, and kneading in a kneading machine; and granulating, drying and screening to obtain the floating granules. The floating granules are directly scattered, the agents can be uniformly and quickly dispersed, the labor intensity is reduced, and time and labor are saved. The granules float on the water surface after entering water and does not harm other organisms in the water body, pollution is reduced, and the granules aim more at mosquito eggs and larvae floating on the water surface.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a pyriproxyfen floating granule and a preparation method thereof. Background technique [0002] Mosquitoes are one of the most important sanitary pests in the world. Human beings are bitten by mosquitoes not only will produce allergic reactions, cause inflammation and itching, but also may spread diseases. It is known that mosquitoes can transmit dengue fever, Zika virus, yellow fever, Japanese encephalitis and other more than 80 kinds of infectious diseases cause as many as 725,000 deaths every year. Therefore, eliminating mosquitoes is the key to ensuring human health and avoiding the spread of diseases. [0003] In the actual control process, due to the wide range of activities of adult mosquitoes, the control is relatively difficult. People try to solve the problem fundamentally by eliminating mosquito larvae with chemical agents. Traditional insecticides that can be used...

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Problems solved by technology

[0006] There are many published patents on the compounding of pymetrozine. The patent application with publication number CN 106818888 A discloses an insecticidal composition containing Metarhizium anisopliae and pyriproxyfen. In the preparation of Example 2 (granules), silicon Algae earth and river sand are used as fillers, which have relatively high density, are easy to settle, have low lethality to mosquito larvae on the water surface, and cause pollution to water bodies; Example 3 (water emulsion) and Example 5 (microemulsion) use a large amount of organic solvents, Co-solvents and emulsifiers, although the control effect is better, but the control cost is not dominant

[0007] The application patent of publication number CN 106614657 A discloses a composition containing pyriproxyfen and matrine, and the application patent of publication number CN 105123699 A discloses a composition containing thymol and pyriproxyfen, publication number CN102726462 The patent application of A discloses a plant-derived mosquito larvicide containing the active ingredient of snakeberry. The active ingredients in these patents are all extracts except pyriproxyfen, and the acquisition method is complicated and the cost is high.

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