Low-molecular-weight polyolefin emulsion applied to seed coating agent film-forming agent and preparation method of low-molecular-weight polyolefin emulsion

Abstract

The invention relates to a low-molecular-weight polyolefin emulsion applied to a seed coating film-forming agent and a preparation method of the low-molecular-weight polyolefin emulsion. The emulsionis prepared from the following raw materials in parts by weight: 20-40 parts of low-molecular-weight polyolefin, 2-6 parts of an emulsifier, 1-2 parts of a co-emulsifier, 1-2 parts of a wetting agent,0.1-0.2 part of a preservative, and 50-75 parts of water. The preparation method comprises the steps: adding the low-molecular-weight polyolefin, the emulsifier, the co-emulsifier and the wetting agent into a pressure emulsification kettle according to a preset ratio; heating to 100-180 DEG C, melting to be transparent, stirring at a low speed until the mixture is uniformly mixed, slowly adding formula water under the condition that the stirring rotating speed is 200-400 r / min, keeping the temperature for 30-60 min, and homogenizing to a cooling kettle under 20-40 MPa by using a high-pressurehomogenizer; and cooling to 40 DEG C or less in the cooling kettle, adding the preservative, filtering and discharging. The low-molecular-weight polyolefin emulsion applied to the seed coating film-forming agent can be enriched on the surfaces of seed coating films to form a hard and smooth isolation layer, so that adhesion between the seed coating films is prevented, meanwhile, the hardness andsmoothness of the seed coating films are improved, the seed coating films added with the polyolefin emulsion are smoother and harder, and the wear resistance is obviously improved.

Description

technical field [0001] The invention relates to the technical field of pesticide seed coating, in particular to a low-molecular-weight polyolefin emulsion applied to a film-forming agent of a seed coating agent and a preparation method thereof. Background technique [0002] Seed coating agent (seed coating agent) is processed from related medicaments, nutrients, film-forming agents, dispersants and auxiliary agents. It has certain strength and permeability and can be directly coated on the surface of seeds. It has the functions of seed disinfection, prevention and control of pests and rodents, slow release of fertilizers, avoiding damage to natural enemies, reducing environmental pollution, and improving crop resistance. It can increase seed germination rate, enhance disease resistance and insect resistance, cultivate strong seedlings, The purpose of increasing production and income. Its main ingredients include pesticide raw materials and film-forming agents, wetting and...

AI Technical Summary

Problems solved by technology

[0011] The present invention aims to solve the problems of low coating film hardness, sticky film formation, adhesion and agglomeration between coating films and falling off existing in the existing seed coating agent film forming agent, and further provides a low Molecular-weight polyolefin emulsion, the low-molecular-weight polyolefin emulsion is used as a film-forming agent for seed coating agents, and has the advantages of fast surface drying, hard and wear-resistant film formation, reduced adhesion and agglomeration between coating films, and improved film fastness

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