Microcapsule suspending agent containing spinosad and cyantraniliprole, and preparation method thereof

Abstract

The invention relates to a microcapsule suspending agent containing spinosad and cyantraniliprole, and a preparation method thereof. The microcapsule suspending agent is mainly composed of spinosad, cyantraniliprole, a capsule wall material, a water-soluble monomer, a dispersing agent, a protective agent, a capsule heart solvent and water. The recovery rate of the obtained microcapsule suspending agent is over 98%; embedding efficiency is higher than 95%; the microcapsules is regular spheres; the particle size is 0.5-5 [mu]m; and the appearance is similar to that of a conventional pesticide suspending agent. The microcapsule suspending agent can be directly mixed with water to carry out spraying. Indoor and field experiments show that the microcapsule suspending agent containing spinosad and cyantraniliprole has very good preventing and treating effects for white flies and thrips on cucumber, paddy rice, cotton and hairy melons, compared with missible oil and a suspending agent; lasting period is significantly prolonged; and the cost is lower than that of missible oil and other preparations. Besides, the microcapsule suspending agent containing employs water as a dispersing medium, has low usage amount of an organic solvent, is safe in storage transportation and use, and reduces pollutions to the environment.

Description

technical field [0001] The invention belongs to the technical field of compound pesticides, in particular to a microcapsule suspension containing spinosyn and cyantraniliprole and a preparation method thereof. Background technique [0002] Spinosad (Spinosad), molecular formula: C 41 h 65 NO 10 (spinosyn A)+C 42 h 67 NO 10 (spinosyn D). Structural formula: [0003] [0004] Spinosad is considered to be the effector of the nicotinic acid acetylcholine receptor, which can continuously activate the target insect acetylcholine nicotinic receptor, but its binding site is different from that of nicotine and imidacloprid. It can quickly paralyze and paralyze the pests, and finally lead to death. Its insecticidal speed is comparable to that of chemical pesticides. It has high safety and no cross-resistance with currently commonly used insecticides. It is a low-toxicity, high-efficiency, and low-residue biopesticide. Suitable for pollution-free vegetables and fruit produ...

AI Technical Summary

Problems solved by technology

[0010] Insecticides with a single active component often have different degrees of defects in the control of agricultural pests: continuous use is prone to resistance, the insecticidal spectrum is not wide enough, it causes greater pollution to the environment, and cannot provide comprehensive protection for crops, etc.

However, it has been found in practical applications that the compound suspending agent disclosed in the application has the disadvantage of poor physical stability, because the suspending agent disclosed in the application belongs to a common suspending agent, which is a thermodynamically unstable coarse dispersion system. Large, the active ingredient particles have a higher surface free energy and are in an unstable state, which hinders the efficacy of the drug; in addition, the active ingredient particles in the suspensions disclosed in this application are generally between 0.5 and 10 μm, and the smaller ones can be It is 0.1 μm, and the larger one can reach 50 μm or more. Because the dosage form exists in the form of solid particles after being sprayed on the crop surface, the compound suspension concentrate disclosed in this application faces the major defects that the active ingredients are easy to lose and difficult to adhere.

Images