Dinotefuran oil suspending agent as well as preparation method and application thereof

Abstract

The invention provides a dinotefuran oil suspending agent and a preparation method and an application thereof. The dinotefuran oil suspending agent contains dinotefuran active matter and further contains at least one synergist of fatty alcohol ethoxylation propoxylate with the general formula of R-O-(EO)x-(PO)y-OH, R is C8-C20 alkyl, EO is ethyleneoxy, PO is propyleneoxy, and x is an integer of 1-20. According to the prepared oil suspending agent containing the dinotefuran active matter and the synergist, the insecticidal activity of dinotefuran is greatly improved, the dosage of the active matter is reduced, and the influence on the environment is reduced; the spray liquid containing the oil suspending agent is excellent in physicochemical property and free of obvious emulsion layering; when the oil suspending agent is applied to plants and / or plant growth environments, the permeation of an application part to the oil suspending agent can be enhanced, and the application efficiency isimproved.

Description

technical field [0001] The invention relates to the field of pesticides, in particular to a dinotefuran oil suspension, a preparation method and application thereof. Background technique [0002] Dinotefuran, a third-generation nicotinic insecticide developed by Mitsui Chemicals, has a broad spectrum of insecticidal properties and is an stimulant of nicotinic acetylcholine receptors. It affects the synapses of the central nervous system of insects through spinal neurotransmission. Contact and stomach toxicity and has excellent systemic penetration. Dinotefuran is very safe to mammals, birds and aquatic organisms, has no harm to crops, and can control various pests such as Hemiptera, Lepidoptera, Coleoptera, Diptera, Hymenoptera, etc. White-backed planthopper, gray planthopper, night-tailed cicada, etc. have a high control effect. [0003] Although dinotefuran has a strong control effect on various pests, dinotefuran belongs to a class of insoluble active ingredients, and i...

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Problems solved by technology

[0004] CN106359440A discloses dinotefuran dispersible oil suspension, wherein the content of each component is: dinotefuran 20-30%, octylphenol polyoxyethylene ether 4-6%, calcium dodecylbenzenesulfonate 4-6% %, phenylethyl phenylpropylphenol polyoxyethylene ether 4-6%, organic bentonite 0.8-1.2%, white carbon black 0.8-1.2%, citric acid 0.1-0.5%, dihydrogenated tallow phthalamide 0.1% ~0.5%, tris(2,4-di-tert-butylphenyl)phosphite 0.1~0.5%, 2-n-octyl-4-isothiazolin-3-one 0.1~0.5%, HT-508 silicone 0.1 ~0.5%, soybean oil 18~22%, the balance is methyl oleate; this oil suspension concentrate solves the problems of oil separation, delamination, agglomeration, high decomposition rate and chemical instability in dinotefuran preparations , but the control effect of the oil suspension on pests is still low, it is difficult to give full play to the activity of dinotefuran

[0005] CN109169646A discloses a preparation method of dinotefuran oil suspension, to solve the technical problems such as large particle size of dinotefuran in the preparation obtained by the existing preparation process, low drug efficacy, causing mechanical impurities, etc., but the preparation method Controlling the diameter of emulsion droplets, the method has a low repetition rate and is difficult to produce on a large scale

[0006] CN101784184B discloses that the structural formula is R-O-(EO) w -(PO) x -(EO) y (PO) x The compound of -H is used as a synergist of neonicotinoid compounds, specifically acetamiprid, and the composition under specific solvent combination conditions has a certain effect of increasing the control effect, but the synergistic effect is still lower

[0007] In summary, although the oil suspension containing dinotefuran in the prior art has a synergistic effect than other formulations of dinotefuran, it is still not ideal

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