Paraquat paste agent and preparation method thereof

Abstract

The invention relates to a paraquat-containing paste agent and a preparation method thereof. The paraquat paste agent is prepared by thoroughly mixing an effective component of 10% to 50% by mass of paraquat dichloride and a proper quantity of water-soluble high polymers, a surfactant, an emetic, a filler, a moisturizing agent, a coloring agent and an olfactory warning agent. At present, the dosage form of paraquat is mainly water agent, being easily administered orally. According to the invention,the paste agent prepared from paraquat, which is not easily administered, can effectively reduce the risk of paraquat poisoning, and compared with other types of conventional preparations, the paraquat paste agent has a good environmental compatibility and an excellent weed control effect.

Description

technical field [0001] The invention relates to the field of production of new pesticide formulations, in particular to a paraquat ointment and a preparation method thereof. Background technique [0002] Paraquat [0003] Chemical name: 1,1'-dimethyl-4,4'-bipyridyliumion (1.1'-dimethyl-4,4'bipyridylium cation, English common name: paraquat); [0004] Molecular formula: C 12 h 14 N 2 Cl 2 ; [0005] Structural formula: [0006] Action characteristics: Paraquat works in the chloroplast of green plants. The photosynthetic system in chloroplasts absorbs light energy to make sugars, which provide nutrients for plants. Paraquat precisely enters a biochemical system called photosynthetic system I. The system generates free electrons to drive photosynthesis. Paraquat ions react with these electrons to form "free radicals". Oxygen quickly converts these free radicals into peroxides. These peroxides can easily react with unsaturated fatty acids in cell membranes. After ...

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Problems solved by technology

[0012] In order to reduce the poisoning accidents caused by the toxicity of paraquat and make paraquat continue to serve agricultural production, countries around the world have conducted in-depth research on paraquat, aiming at human error The solution to the toxicity problem caused by ingestion is proposed. In the patent applications CN00813298.4, CN99119405.5 and US5635445, it is proposed to improve the safety of paraquat by changing the current general-purpose paraquat aqueous solution into a solid or semi-solid dosage form of paraquat , but, when producing this solid or semi-solid dosage form, because dust pollution can cause damage to industrial workers and users and increase production cost; In the patent application CN95194386.3, the mode of generating gel is proposed to improve paraquat safety, this method will significantly reduce the drug efficacy, and does not meet the needs of agricultural production; in the patent application CN02807340.1, it is proposed to add alginate to the paraquat aqueous solution to reduce the oral toxicity of paraquat, but its practical application During the process, the viscosity of the preparation is too high, it cannot be poured out completely, and it is difficult to disperse in the sprayer, so that the preparation loses its balance and cannot achieve a safe effect.

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