2, 4-D dimethylamine salt water-soluble granule and preparation method thereof

Abstract

The invention discloses a 1, 4-D dimethylamine salt water-soluble granule and a preparation method thereof. The granule is prepared from 2, 4-D dimethylamine salt, a surfactant, an anti-bonding agentand a filler, and the 2, 4-D dimethylamine salt is prepared through a chemical reaction of 2, 4-D and an aqueous dimethylamine solution in an organic solvent. The preparation method comprises the following steps: dehydrating by controlling the temperature value at the boiling point corresponding to the aqueous dimethylamine solution and the organic solvent in a reflux dehydration mode under negative pressure, vaporizing the unreacted aqueous dimethylamine solution obtained after the reaction and the organic solvent to obtain a dehydrated dimethylamine salt solid, adding the surfactant, the filler and the anti-bonding agent into the dimethylamine salt solid, fully stirring, mixing, drying, and sieving to obtain the 2, 4-D dimethylamine salt water-soluble granule. The granule prepared in theinvention is good in flowability, more excellent in storage effect, not easy to cake in a transportation process and relatively high in practicability.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a 2,4-D dimethylamine salt soluble granule and a preparation method thereof. Background technique [0002] 2,4-D herbicide has the advantages of low price, fast weeding speed, wide weeding spectrum, and no residue; it is widely used; in recent years, pesticide formulations have become green, low toxicity, low residue, solvent-free or less solvent Formulation direction development. [0003] At present, most 2,4-D preparations are in the form of ester emulsifiable concentrate preparations, or in the form of aqueous formulations of sodium salts and amine salts; and 2,4-D in the form of emulsifiable concentrates has a long residual time on plants and is easy to drift , The solvent is not friendly to the environment, and improper use will cause disadvantages such as drug injury, human and animal poisoning accidents; compared with sodium salt, ammonium salt has a wider application ...

AI Technical Summary

Problems solved by technology

The complicated granulation preparation process leads to expensive granulation processing costs, especially for low-monovalent pesticides such as 2,4-D dimethylamine salt, it is particularly important to reduce the preparation cost

Images