A film-forming agent for seed coating, its preparation method and application

Abstract

The invention relates to a film forming agent for seed coating, a preparation method for the film forming agent and an application of the film forming agent. The film forming agent is obtained through carrying out a seed emulsion polymerization reaction on hydrophobic unsaturated monomeric compounds and hydrophilic unsaturated monomeric compounds, wherein the hydrophobic unsaturated monomeric compounds are styrene and acrylate, and the hydrophilic unsaturated monomeric compounds are acrylamide and / or acrylic acid; or through carrying out seed emulsion polymerization reaction prepolymerization on the hydrophobic unsaturated monomeric compounds so as to obtain a styrene-acrylic emulsion, and then, copolymerizing the styrene-acrylic emulsion and the hydrophilic unsaturated monomeric compounds. The film forming agent disclosed by the invention has the advantages of good film forming property, high coating uniformity, good tolerant stability and high bioactivity, and thus, the aims of prolonging pesticide effect and guaranteeing the safety of growth of crops are achieved. According to the film forming agent disclosed by the invention, the water resistance is good, and the ratio of drop is low, so that the film forming agent is especially applicable to coating film forming materials for Southern rice. By applying the film forming agent disclosed by the invention to rice seed coating, the ratio of drop is lower than 4%, and the germination percentage is higher than 95%.

Description

technical field [0001] The invention relates to a film-forming agent for seed coating, its preparation method and application. Background technique [0002] A good film-forming agent is the key to firmly attach the seed coating agent to the surface of the seed, reduce the diffusion of pesticides in water, and make the pesticide release slowly during the seedling growth process, and prolong the duration of the pesticide. However, the existing rice seed coating agents have problems such as high shedding rate and unstable drug effect in application. The main reason is that the film-forming agents of seed coatings are mostly polyvinyl alcohol, chitosan or their blended products. These materials are easily soluble in water and it is difficult to maintain the active ingredients, thus affecting the stability and biological activity of the seed coatings. . Not all film-forming agents are suitable for rice film-forming agents, and seed coating agents used in water environments have...

AI Technical Summary

Problems solved by technology

However, the existing rice seed coating agents have problems such as high shedding rate and unstable drug effect in application.

The main reason is that the film-forming agents of seed coatings are mostly polyvinyl alcohol, chitosan or their blended products. These materials are easily soluble in water and it is difficult to maintain the active ingredients, thus affecting the stability and biological activity of the seed coatings.

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