Fipronil suspending agent and preparation method thereof

Abstract

The invention relates to a fipronil suspending agent and a preparation method thereof and belongs to the technical field of chemical industry. The fipronil suspending agent is prepared from the following components in percentage by weight: 1% to 50% of fipronil, 5 to 20 parts of a wetting dispersant, 1 to 5 parts of an anti-freezing agent, 0.1 to 2 parts of a thickening agent, 0.1 to 2 parts of apreservative, 0.1 to 0.8 part of a de-foaming agent, 0 to 10 parts of a penetration enhancer, 0.1 to 5 parts of a pH (Potential of Hydrogen) regulator and the balance of water. The preparation methodcomprises the following steps: adding a mixture of crude drugs and auxiliary agents under a hotly dissolved state into the water stirred at a high speed and stirring; cooling to room temperature; andsupplementing the pH regulator and blending until the requirements are met, so as to obtain a fipronil suspending solution. Compared with particles of a suspending solution obtained by a sand millingand dispersion method, particles of the suspending solution prepared by the formula and the method have a small particle size, the pesticide effect can be sufficiently expressed and the storage endurance performance is good. The suspending solution has a high flashing point, is not combustible and explosive and is safe to produce, store and use; the suspending solution contains less dust and has small environment pollution, so that the suspending solution is safe to producers, users and the environment; and the water is used as a base material so that resources are abundant, the cost of products is low and the products are easy to package.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a fipronil suspension and a preparation method thereof. Background technique [0002] Since the reform and opening up, the national economy has grown rapidly. With the development of agricultural science and technology, especially in recent years, the country has increased its emphasis on agriculture, which makes the importance of preventing and controlling agricultural diseases and insect pests particularly prominent. The use of pesticides is increasing year by year. At the same time, agricultural production has also caused prominent environmental problems. With the increasingly stringent environmental protection requirements, it is imminent to develop new environmentally friendly dosage forms. Fipronil is a phenylpyrazole insecticide with a wide insecticidal spectrum. It mainly has gastric toxicity to pests, and also has contact and certain systemic effects. It is effective ...

AI Technical Summary

Problems solved by technology

At present, in China, the processing of pesticide suspension concentrates mostly adopts the method of mechanical crushing, but the particle size is large, the drug effect is not fully exerted, and the storage resistance is poor.

The technicians of scientific research units and enterprises are constantly exploring, researching, and researching and developing technologies related to fipronil suspension concentrate. Although some progress has been made, there are still technical problems that have not yet been overcome in practical application.