Method for preparing dicamba sodium salt preparations and prepared dicamba sodium salt preparations

Abstract

The invention relates to the technical field of pesticides, in particular to a method for preparing dicamba sodium salt preparations and the prepared dicamba sodium salt preparations. The preparation method comprises the following steps that 10-80 parts of dicamba, 5-85 parts of inorganic fillers and 5-35 parts of alkaline substances are taken and are mixed with water, and solid-solid reactions are carried out under the temperature ranging from 45 DEG C to 55 DEG C to prepare wet dicamba sodium salt; the wet dicamba sodium salt is mixed with 5-20 parts of surface active agents, and the dicamba sodium salt preparations are prepared through granulation, drying and screening. Because the solid-solid reactions are adopted and are carried out in a moderate mode, dicamba sodium salt reactions, kneading and granulation can be simultaneously carried out, and the technical process is short. Experiments indicate that the suspension rate of the dicamba sodium salt preparations is obviously higher than that of existing products and the disintegration time of the dicamba sodium salt preparations is obviously shorter than that of the existing products.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a preparation method of dicamba sodium salt preparation and the prepared dicamba sodium salt preparation. Background technique [0002] Dicamba is a hormone herbicide, which belongs to the benzoic acid series herbicides. It has a systemic conduction effect and has a significant control effect on annual and perennial broad-leaved weeds. Used for post-emergence spraying, the agent can be quickly absorbed by the leaves and stems of weeds, conduct upwards and downwards through the phloem or xylem, and mostly concentrate in the meristems and parts with vigorous metabolic activities, hindering the normal activities of plant hormones, thus making them die. It has a significant control effect on annual and perennial broad-leaved weeds. Generally, broad-leaved weeds will appear deformed and curled within 24 hours after use, and die within 15-20 days. It is relatively safe for gramine...

AI Technical Summary

Problems solved by technology

Such a production method needs to be completed through two steps of sodium salt synthesis and granulation. Therefore, there is a complex process problem in the preparation of dicamba sodium salt preparations using the prior art, and the method has high requirements for equipment but the conversion rate of raw materials is relatively low. low, leading to high production costs

Moreover, the selection of excipients in the prior art is also unreasonable, resulting in long disintegration time and low suspension rate of the prepared water-soluble granules

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