Seed coating and method for preparing same

Abstract

The invention provides a seed coating. The seed coating comprises, by weight, 5-20 parts of polyols substances, 0-20 parts of pesticide active components, 0-0.5 part of triethylene diamine, 0-0.5 partof silicon surfactants, 0-0.25 part of tin catalysts and 5-20 parts of diisocyanate compounds. The polyols substances are liquefied animal fiber polysaccharides and polyether polyols. The seed coating has the advantages of high biodegradability, speediness, simplicity and convenience in operation, controllable release speed and the like.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a seed coating agent and a preparation method thereof. Background technique [0002] The seeds in the dry or wet state are wrapped with a pesticide composition containing a binder to form a protective layer with certain functions and coating strength outside the seeds. This process is called seed coating. Combination substances are called seed coatings. [0003] The use of seed coating agents to coat seeds can promote the standardization, pelletization, and commercialization of improved varieties. After coating with seed coating agents, the quality of seeds can be improved, so that the emergence of seedlings is guaranteed to be complete, complete, and strong, and seeds can be saved at the same time; it can also prevent and control diseases. Insects, rodents and deficiency diseases, the coated seeds are sown into the soil, the seed coating forms a barrier around the seeds to p...

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Problems solved by technology

[0006] The above-mentioned patents require the use of aromatic hydrocarbon solvents in the preparation process of microcapsule suspensions, which increases the environmental pressure; and polyurethane is used as the wall material, which has poor biodegradability, and it is easy to cause unstable or non-release of pesticide active ingredients.

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