Bactericidal composition and application thereof

Abstract

The invention relates to a bactericide composition, in particular to a bactericide composition taking a sulfonic acid group-containing surfactant as a stabilizing and synergistic agent. The bactericide composition comprises the following components in percentage by weight: 1-95% of an active component, 1-10% of the stabilizing and synergist sulfonic acid group-containing surfactant, and the balance of other components, totaling 100%, wherein the active component is prothioconazole or a composition of the prothioconazole, enestroburin, fenaminstrobin, pyraoxystrobin, coumoxystrobin, pyraclostrobin and other methoxy acrylic esters. The prothioconazole or the prothioconazole and methoxyl acrylate bactericidal composition taking the sulfonic acid group-containing surfactant as the stabilizing and synergistic agent has stable physical and chemical properties, each detection index is qualified in the shelf life of the product, and the composition preparation can be used for preventing and treating plant diseases caused by ascomycetes, basidiomycetes and deuteromycetes. Particularly, the bactericidal composition has a good prevention effect on wheat scab and is safe to wheat.

Description

technical field [0001] The present invention relates to a fungicide composition, specifically a kind of methoxyacrylates such as prothioconazole or prothioconazole and enoxastrobin, enoxastrobin, pyraclostrobin, syringstrobin, and pyraclostrobin The bactericidal composition and its application include a bactericidal composition and a sulfonic acid-based surfactant as a stabilizing and synergistic agent. Background technique [0002] Prothioconazole is a new broad-spectrum triazolethione fungicide firstly developed by Bayer. Its English name is Prothioconazole, and its structural formula is as follows: [0003] [0004] Chemical name: 2-[2-(1-chlorocyclopropyl)-3-(2-chlorophenyl)-2-hydroxypropyl]-2,4-dihydro-1,2,4-triazole- 3-thione, molecular formula: C 14 h 15 Cl 2 N 3 OS, molecular weight: 344.2594, density: 1.5g / cm 3 , Boiling point: 486.7°C / 760mmHg, flash point: 248.2°C. [0005] The PCT patent WO2007104658A applied by BASF applied for a Chinese invention paten...

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Problems solved by technology

The Chinese authorized patent CN1681390B applied by Bayer and the Chinese authorized patent CN102083802B of ADAMA both report that prothioconazole has two crystal forms, the crystal form 1 is an unstable crystal form with a melting point of 140.3, and the crystal form 2 is a stable crystal form. The melting point of crystal form is 138.3. The unstable crystal form is prone to problems such as condensation and deposition when it is made into preparations, which can lead to inaccurate measurement and phytotoxicity. It is a difficult problem for preparations containing prothioconazole that needs to be solved urgently

[0006] Because the two crystal forms of prothioconazole can be converted to each other under certain conditions in the preparation, it affects the stability of the product. In order to ensure the stability of the product containing prothioconazole within the shelf life, it is urgent to find a method to ensure the stable performance of the preparation product. Composition to address formulation stability issues

Prothioconazole or preparations made of prothioconazole and methoxyacrylates are prone to problems such as a decrease in the effective suspension rate of active components and product creaming due to the interconversion of prothioconazole crystal forms.

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